CN113751588B - Special-shaped piece phase change composite forming device and machining method - Google Patents
Special-shaped piece phase change composite forming device and machining method Download PDFInfo
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- CN113751588B CN113751588B CN202110883426.6A CN202110883426A CN113751588B CN 113751588 B CN113751588 B CN 113751588B CN 202110883426 A CN202110883426 A CN 202110883426A CN 113751588 B CN113751588 B CN 113751588B
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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
- B21D37/01—Selection of materials
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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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- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a phase-change composite forming device for special-shaped parts, which comprises a composite punch and a die assembly, wherein a die groove is arranged in the die assembly, a straight wall section and a special-shaped section which is difficult to perform rigid stamping processing are arranged in the die groove, the composite punch comprises a rigid body and a low-melting-point alloy, a plate blank is arranged on the die assembly, the low-melting-point alloy is used for performing special-shaped section stamping forming on the plate blank, and a heater is also arranged in the die assembly and used for semi-liquefying the low-melting-point alloy; the invention also discloses a processing method of the special-shaped piece phase change composite forming device, the temperature of the mould component is controlled below 120 ℃, the composite punch is pressed downwards to form the plate blank on the straight wall section, the temperature of the mould component is controlled to be t more than or equal to 135 and less than 175 ℃, and the special-shaped section is integrally formed. The invention provides a special-shaped part phase change composite forming device and a special-shaped part phase change composite forming method, which can form a shell part with a special-shaped structure by a processing mode of stamping a metal plate.
Description
Technical Field
The invention belongs to the field of stamping equipment, and particularly relates to a special-shaped piece phase change composite forming device and a processing method.
Background
Some shell parts can be designed in a special-shaped structure in the design process due to the structural or attractive requirements, and in the traditional machining process, the special-shaped structures are difficult to form through stamping and forming, and can be formed through machining for many times by equipment such as lathes, cutting machines, bending machines, welding machines and the like, or through die casting and then surface polishing. In the two processing modes, the former has complex process and multiple steps in processing and forming, and can cause waste of a large amount of raw materials, and the latter needs to manufacture a die, so that for some special-shaped structures with more bends, more pouring gates are arranged, the production cost is higher, the production period is long, and parts are easily damaged in the polishing process.
Disclosure of Invention
The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a dysmorphism piece phase transition composite forming device, includes composite punch and mould subassembly, the top of mould subassembly is located to composite punch, be equipped with the model groove in the mould subassembly, the model inslot is equipped with straight wall section and is difficult to carry out the dysmorphism section of rigidity punching press processing, the bottom of straight wall section is located to dysmorphism section, composite punch includes rigid body and low-melting alloy, the front end of composite punch is located to the low-melting alloy, be equipped with the slab on the mould subassembly, the low-melting alloy is used for carrying out dysmorphism section stamping forming to the slab, still be equipped with the heater in the mould subassembly, the heater is used for low-melting alloy semi-liquefaction.
Compared with the prior art, the invention has the advantages that: in the traditional punching process, a punch is mostly made of high-hardness and high-strength materials, so that the punching structure of the punch is greatly limited, when the width of the bottom of a die slot is larger than the width of an insertion end of the die slot, the punch is difficult to form the bottom of a die, and when a sharp-corner structure to be processed is arranged in the die slot, the punch cannot perform corresponding sharp-corner structure design, otherwise the punch is damaged in the punching process of the punch, so that the sharp-corner structure is difficult to process in a punching processing mode.
As an improvement, the low melting point alloy is made of 70Sn-30In, and through the improvement, the 70Sn-30In material is composed of 70% of tin and 30% of indium, and the solidus line of the material is 120 ℃, and the liquidus line of the material is 175 ℃. The alloy has a solidification interval of 55 ℃, is convenient for controlling solid-liquid phase transformation, and has low cost.
As an improvement, the special-shaped section comprises a first special-shaped part, the first special-shaped part is arranged at the bottom end of the straight wall section, the outer diameter of the first special-shaped part is larger than the diameter of the straight wall section, the edge of the first special-shaped part is a smooth arc surface, when the first special-shaped part is machined, the temperature in the die assembly is more than or equal to 155 and less than 175 ℃, through the improvement, when the temperature in the die assembly is more than or equal to 155 and less than 175 ℃, the low-melting-point alloy is in a high liquid phase state, so that the low-melting-point alloy has better fluidity, meanwhile, compared with a pure liquid fluid, the attraction among molecules is stronger, the low-melting-point alloy is more easily sealed and is not easily flowed out from between the rigid body and the plate blank, and under the high pressure action of the composite punch, the low-melting-point alloy can expand outwards to drive the plate blank to expand, so that the plate blank is subjected to the punching machining forming of the first special-shaped part, and the special-shaped process is suitable for the first special-shaped part with gentle change, namely, the edge of the first special-shaped structure is a smooth arc surface.
As an improvement, the special-shaped section also comprises a second special-shaped part which is arranged at the bottom end of the straight wall section, the second special-shaped part is an acute angle groove, when the second special-shaped part is processed, the temperature in the die assembly is t more than or equal to 135 and less than 155 ℃, through the improvement, when the temperature in the die assembly is t more than or equal to 135 and less than 155 ℃, the low-melting-point alloy is in a high solid phase state, the low-melting-point alloy in the state has certain fluidity, the intermolecular attraction is only inferior to a pure solid state, larger pressure can be borne, the semi-liquefied low-melting-point alloy is still not easy to flow out, and the plate blank can be subjected to better expansion deformation, so that the forming of some acute angle grooves can be well carried out, and the condition that the punch head can be damaged by the traditional punching process for the acute angle grooves is avoided.
As an improvement, the mold assembly comprises a shell and a molding mold core, a placing groove for placing the molding mold core is formed in the shell, the mold groove is formed in the molding mold core, the molding mold core is detachably connected in the placing groove, the heater is placed along the circumferential direction of the placing groove, the shell is formed by stacking a plurality of modules, the heater is arranged between two adjacent modules, through the improvement, the installation of the molding mold core and the heater is realized, the heating effect of the heater on the molding mold core is ensured, and meanwhile, the heater is easy to detach and replace.
As the improvement, the side of standing groove is the slope setting, the bottom of standing groove is equipped with the knock-out pin that is used for the ejecting standing groove of forming die core, the knock-out pin is connected with the driver, forming die core forms along the circumference concatenation through the polylith mold core, through the improvement, the side of standing groove is the slope setting, not only can treat the slab processing completion back, and the ejecting forming die core of knock-out pin is more convenient, when can also making the polylith mold core put into the standing groove, along the automatic concatenation in inclined plane, and the compound die is more accurate, is difficult for producing the overlap.
As an improvement, a T-shaped block is arranged at the joint of the rigid body and the low-melting-point alloy, a T-shaped groove matched with the T-shaped block is arranged at the joint of the low-melting-point alloy and the rigid body, and through the improvement, the rigid body and the low-melting-point alloy can be fixedly connected, so that the low-melting-point alloy is prevented from falling off from the rigid body, and meanwhile, the situation that the rigid body and the low-melting-point alloy deviate in the stamping process can be avoided.
As the improvement, be equipped with the blank groove that is used for placing the slab on the mould subassembly, blank groove's top swing joint has the clamp plate, the clamp plate is used for preventing when the punching press slab, the perk of slab both sides, be equipped with the punching press hole that supplies compound drift to pass on the clamp plate, through the improvement, slab both sides perk when the punching press can be avoided, the frictional force of slab both sides can also be increased, make the slab by the punching press in-process, the fastness of slab both sides is higher, and stamping forming is only accomplished through tensile deformation's mode to the slab by the punching press, makes the part thickness after the shaping more unified, even.
A processing method of a special-shaped piece phase-change composite forming device comprises the following steps,
s1: placing the plate blank on a blank trough, moving a pressing plate downwards, and covering the plate blank;
s2: controlling the temperature of the die assembly to be below 120 ℃, and pressing down the composite punch to form the plate blank in the straight wall section;
s3: when the low-melting-point alloy is abutted against the bottom of the model groove, controlling the temperature of the mould component to be t less than 175 ℃ at the temperature of more than or equal to 155, and integrally forming the first special-shaped part;
s4: and after the first special-shaped part is integrally formed, controlling the temperature of the mold assembly to be t less than 155 ℃ at 135-155 ℃, and integrally forming the second special-shaped part.
Compared with the prior art, the invention has the advantages that: in the traditional punching process, the punch is made of high-hardness and high-strength materials, so that the punching structure of the punch is greatly limited, when the width of the bottom of the die groove is larger than the width of the insertion end of the die groove, the punch is difficult to form the bottom of the die, and when a sharp-corner structure to be processed is arranged in the die groove, the punch cannot be designed with a corresponding sharp-corner structure, otherwise the punch is damaged in the punching process of the punch, so that the sharp-corner structure is difficult to process in a punching processing mode, through the design of the invention, the temperature of a die assembly is controlled below 120 ℃ in the punching processing process of the composite punch, so that the liquefaction of low-melting-point alloy is avoided, the activity of a plate blank can be improved, the plate blank is easier to be punched and stretched, the composite punch forms a straight-wall section on the plate blank through the straight-wall section first, when the composite punch pushes the plate blank to move to be abutted against the bottom of the model groove, the rigid body on the composite punch is matched with the straight wall section at the moment, the space between the rigid body and the plate blank is sealed, namely the space where the low-melting-point alloy is located is sealed, then the temperature is heated by a heater, the low-melting-point alloy is semi-liquefied, the semi-liquefied low-melting-point alloy is in a solid-liquid mixed state, the plate blank has certain expansion forming capacity, the composite punch can continue to punch at the moment, the semi-liquefied low-melting-point alloy is expanded at high pressure to complement the plate blank punch forming of the special-shaped section, the temperature of a mould component is controlled to be more than or equal to 155 ℃ at first, the expansion filling of the low-melting-point alloy is carried out on the special-shaped section at low pressure, then the temperature of a mould set is controlled to be more than or equal to 135 ℃ at less than or equal to 155 ℃, the secondary expansion filling of the low-melting-point alloy is carried out on the special-shaped section at high pressure, and the process from low pressure to high pressure is carried out, make the inflation filling process of low melting point alloy be one by easy to difficult process, make the inflation filling process of low melting point alloy more stable, it is more even, avoid appearing the uneven condition of inflation thickness of slab, and in being changed the in-process to high solid phase by high liquid phase, the low melting point alloy of high liquid phase enters into the acute angle recess more easily, then the low melting point alloy of high liquid phase changes into high solid phase and carries out the punching press to the acute angle recess, can greatly reduced the punching press degree of difficulty to the acute angle recess, the output of compound drift has also been reduced simultaneously, the time of high-pressure punching press has been reduced, make equipment have longer life, the final completion has the housing part of abnormal structure to carry out the fashioned purpose of processing mode that the punching press through the panel beating.
As an improvement, the method also comprises the step of,
s5: after the plate blank is shaped, the composite punch is withdrawn, the pressing plate moves upwards, and the ejector rod ejects out of the forming mold core;
s6: disassembling the forming mold core into a plurality of mold cores, and taking out the formed plate;
s7: placing the plate in an environment with the temperature of above 175 ℃, and reversing, separating and collecting the low-melting-point alloy in the plate for manufacturing the composite punch again; through the improvement, after the punch forming of the plate blank, the formed plate blank can be taken out of the die assembly, the low-melting-point alloy can be separated from the plate blank and collected, the secondary production of the composite punch is carried out, a large amount of waste can not be caused to the low-melting-point alloy, and the cost of the special-shaped piece in the production process is greatly improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic sectional structure view of the overall structure of the present invention.
FIG. 3 is a schematic sectional view of the molding core of the present invention.
Shown in the figure: 1. the composite punch comprises a 1.1 part, a rigid body, a 1.1.1 part, a T-shaped block, a 1.2 part, a low-melting-point alloy, a 1.2.1 part, a T-shaped groove, a 2 part, a die assembly, a 2.1 part, a 2.1.1 part, a module, a 2.2 part, a forming die core, a 2.2.1 part, a die core, a 2.3 part, a heater, a 2.4 part, a die groove, a 2.4.1 part, a straight wall part, a 2.4.2 part, an abnormal section, a 2.4.3 part, a first abnormal section, a 2.4.4 part, a second abnormal section, a 2.5 part, a placing groove, a 2.6 part, a blank groove, a 3 part, a blank, a 4 part, an ejector rod, a 5 part, a pressing plate, a 5.1 part and a punching hole.
Detailed Description
Embodiments of the present invention are further described below with reference to the accompanying drawings.
As shown In fig. 1-2, a phase change composite forming device for a shaped part includes a composite punch 1 and a die assembly 2, the composite punch 1 is disposed above the die assembly 2, a die groove 2.4 is disposed In the die assembly 2, a straight wall section 2.4.1 and a shaped section 2.4.2 difficult to be rigidly pressed are disposed In the die groove 2.4, the shaped section 2.4.2 is disposed at a bottom end of the straight wall section 2.4.1, the shaped section 2.4.2 includes a first shaped portion 2.4.3, the first shaped portion 2.4.3 is disposed at a bottom end of the straight wall section 2.4.1, an outer diameter of the first shaped portion 2.4.3 is larger than a diameter of the straight wall section 2.4.1, an edge of the first shaped portion 2.4.3 is a smooth arc surface, when the first shaped portion 2.4.3 is processed, an inner temperature of the die assembly 2 is 155 ℃ or less, T < 175 ℃ and the shaped section 2.4.2 further includes a second shaped portion 2.4.4.2, a second shaped portion 2.4.2.4.2, a second shaped portion 4.2 is disposed at a bottom end of the straight wall section 2.4.1, the second special-shaped part 2.4.4 is an acute angle groove, when the second special-shaped part 2.4.4 is processed, the temperature In the die assembly 2 is 135-155 ℃, the composite punch 1 comprises a rigid body 1.1 and a low-melting-point alloy 1.2, the low-melting-point alloy 1.2 is arranged at the front end of the composite punch 1, a T-shaped block 1.1 is arranged at the joint of the rigid body 1.1 and the low-melting-point alloy 1.2, a T-shaped groove 1.2.1 matched with the T-shaped block 1.1.1 is arranged at the joint of the low-melting-point alloy 1.2 and the rigid body 1.1, the low-melting-point alloy 1.2 is made of 70Sn-30In, the composite punch 1 is fixedly connected to a hydraulic cylinder, the punching processing of the composite punch 1 is realized by the driving of the hydraulic cylinder, a slab 3 is arranged on the die assembly 2, the low-melting-point alloy 1.2 is used for punching and forming a special-shaped section 2.4.2 of the slab 3, a heater 2.3 is also arranged In the die assembly 2, and the heater 2.3 is used for liquefying the semi-point alloy 1.2, be equipped with the blank groove 2.6 that is used for placing slab 3 on mould subassembly 2, blank groove 2.6's top swing joint has clamp plate 5, clamp plate 5 is used for preventing when punching press slab 3, the perk of 3 both sides of slab, be equipped with the punching press hole 5.1 that supplies compound drift 1 to pass on clamp plate 5, four angles of clamp plate 5 are fixed respectively on the cylinder, through cylinder drive, realize clamp plate 5's upper and lower removal, guarantee simultaneously that clamp plate 5 pushes down the homogeneity of exerting oneself when slab 3.
As shown in fig. 2-3, the mold assembly 2 includes a housing 2.1 and a mold core 2.2, a placement groove 2.5 for placing the mold core 2.2 is provided in the housing 2.1, the mold groove 2.4 is provided on the mold core 2.2, the mold core 2.2 is detachably connected in the placement groove 2.5, the heater 2.3 is placed along the circumferential direction of the placement groove 2.5, the housing 2.1 is formed by stacking a plurality of modules 2.1.1, the heater 2.3 is provided between two adjacent modules 2.1.1, the side surface of the placement groove 2.5 is inclined, an ejection rod 4 for ejecting the mold core 2.2 out of the placement groove 2.5 is provided at the bottom of the placement groove 2.5, the ejection rod 4 is connected with a driver, and the mold core 2.2 is formed by splicing two mold cores 2.2.2.1 along the circumferential direction.
A processing method of a phase change composite forming device for special-shaped parts comprises the following steps:
s1: placing the plate blank 3 on the blank groove 2.6, moving the pressing plate 5 downwards, and covering the plate blank 3;
s2: controlling the temperature of the die assembly 2 to be below 120 ℃, and pressing the composite punch 1 downwards to form the plate blank 3 in the straight wall section 2.4.1;
s3: when the low-melting-point alloy 1.2 is abutted against the bottom of the model groove 2.4, controlling the temperature of the model component 2 to be more than or equal to 155 and less than or equal to 175 ℃, and integrally forming the first special-shaped part 2.4.3;
s4: after the first special-shaped part 2.4.3 is integrally formed, controlling the temperature of the mould component 2 to be more than or equal to 135 and less than 155 ℃, and integrally forming the second special-shaped part 2.4.4;
s5: after the plate blank 3 is shaped, the composite punch 1 is withdrawn, the pressing plate 5 moves upwards, and the ejector rod 4 is ejected out of the forming mold core 2.2;
s6: the forming mold core 2.2 is disassembled into two mold cores 2.2.1, and the formed plate is taken out;
s7: the sheet is placed in an environment above 175 ℃ and turned upside down, and the low melting point alloy 1.2 in the sheet is separated and collected for the composite punch 1 to be manufactured again.
In the forming process, the temperature rise of the die assembly 2 can be controlled, and the temperature of the die assembly 2 is below 120 ℃, so that the sheet blank 3 has stronger plasticity and is not easy to be damaged and broken under the condition of avoiding the liquefaction of the low-melting-point alloy 1.2; when the first special-shaped part 2.4.3 is integrally formed, the temperature of the control die assembly 2 is controlled to be more than or equal to 155 and less than or equal to 175 ℃, at the moment, along with the pressing of the composite punch 1, the high-liquid-phase low-melting-point alloy 1.2 expands, so that the plate blank 3 is formed along the structure of the first special-shaped part 2.4.3, meanwhile, the low-melting-point alloy also flows to the second special-shaped part 2.4.4, and although the second special-shaped part 2.4.4 cannot be integrally formed, most of the area of the second special-shaped part 2.4.4 is filled with the low-melting-point alloy 1.2; and then, controlling the temperature of the die component 2 to be more than or equal to 135 ℃ and less than 155 ℃, wherein the low-melting-point alloy 1.2 is in a high solid phase state and has higher hardness, the hardness of the low-melting-point alloy 1.2 at the second special-shaped part 2.4.4 is higher, and the whole stamping process of the plate blank 3 is completed under the continuous pressurization of the composite punch 1.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the scope of the invention as defined by the independent claims are intended to be embraced therein.
Claims (8)
1. The utility model provides a dysmorphism piece phase transition composite forming device which characterized in that: the composite punching head comprises a composite punching head (1) and a die assembly (2), wherein the composite punching head (1) is arranged above the die assembly (2), a die groove (2.4) is formed in the die assembly (2), a straight wall section (2.4.1) and a special-shaped section (2.4.2) which is difficult to perform rigid punching processing are formed in the die groove (2.4), the special-shaped section (2.4.2) is arranged at the bottom end of the straight wall section (2.4.1), the composite punching head (1) comprises a rigid body (1.1) and a low-melting-point alloy (1.2), the low-melting-point alloy (1.2) is arranged at the front end of the composite punching head (1), a plate blank (3) is arranged on the die assembly (2), the low-melting-point alloy (1.2) is used for performing special-shaped section (2.4.2) on the plate blank (3), a heater (2.3) is further arranged in the die assembly (2), and the heater (2.3) is used for performing stamping forming on the low-melting-point alloy (1.2) in a semi-liquefied state;
the mold component (2) comprises a shell (2.1) and a forming mold core (2.2), a placing groove (2.5) for placing the forming mold core (2.2) is formed in the shell (2.1), the mold groove (2.4) is formed in the forming mold core (2.2), the forming mold core (2.2) is detachably connected into the placing groove (2.5), the heater (2.3) is placed along the circumferential direction of the placing groove (2.5), the shell (2.1) is formed by overlapping a plurality of modules (2.1.1), and the heater (2.3) is arranged between two adjacent modules (2.1.1);
the die component (2) is provided with a blank groove (2.6) for placing a plate blank (3), a pressing plate (5) is movably connected above the blank groove (2.6), the pressing plate (5) is used for preventing two sides of the plate blank (3) from tilting when the plate blank (3) is punched, and a punching hole (5.1) for the composite punch (1) to pass through is formed in the pressing plate (5);
in the process of punching the composite punch, the composite punch firstly passes through the straight wall section to form the straight wall section on the slab, when the composite punch pushes the slab to move to be abutted against the bottom of the model groove, the rigid body on the composite punch is matched with the straight wall section at the moment to seal the space between the rigid body and the slab, namely the space where the low-melting-point alloy is located, and then the composite punch is heated by a heater to semi-liquefy the low-melting-point alloy, wherein the semi-liquefied low-melting-point alloy is in a solid-liquid mixed state and has the capability of expansion forming on the slab, and the composite punch continues punching at the moment to expand the semi-liquefied low-melting-point alloy at high pressure to complement the slab of the special-shaped section for punch forming.
2. The phase-change composite molding device for the special-shaped piece according to claim 1, wherein: the low-melting-point alloy (1.2) is made of 70Sn-30 In.
3. The phase change composite forming device for the special-shaped piece according to claim 2, characterized in that: the special-shaped section (2.4.2) comprises a first special-shaped portion (2.4.3), the first special-shaped portion (2.4.3) is arranged at the bottom end of the straight wall portion, the outer diameter of the first special-shaped portion (2.4.3) is larger than the diameter of the straight wall portion, the edge of the first special-shaped portion (2.4.3) is a smooth arc surface, and when the first special-shaped portion (2.4.3) is machined, the internal temperature of the die assembly (2) is more than or equal to 155 ℃ and t is less than 175 ℃.
4. The phase-change composite molding device for the special-shaped piece according to claim 3, wherein: the special-shaped section (2.4.2) further comprises a second special-shaped portion (2.4.4), the second special-shaped portion (2.4.4) is arranged at the bottom end of the straight wall portion, the second special-shaped portion (2.4.4) is an acute-angle groove, and when the second special-shaped portion (2.4.4) is machined, the temperature in the die assembly (2) is more than or equal to 135 and t is less than 155 ℃.
5. The device of claim 4, wherein the device comprises: the side of standing groove (2.5) is the slope setting, the bottom of standing groove (2.5) is equipped with ejector pin (4) that are used for ejecting standing groove (2.5) with forming mold core (2.2), ejector pin (4) are connected with the driver, forming mold core (2.2) are formed along the circumference concatenation through polylith mold core (2.2.1).
6. The phase-change composite molding device for the special-shaped piece according to claim 1, wherein: a T-shaped block (1.1.1) is arranged at the joint of the rigid body (1.1) and the low-melting-point alloy (1.2), and a T-shaped groove (1.2.1) matched with the T-shaped block (1.1.1) is arranged at the joint of the low-melting-point alloy (1.2) and the rigid body (1.1).
7. The processing method used by the device for the phase-change composite forming of the special-shaped piece according to claim 5, characterized in that: the method comprises the following steps of,
s1: placing the plate blank (3) on the blank groove (2.6), moving the pressing plate (5) downwards, and covering the plate blank (3);
s2: controlling the temperature of the die assembly (2) to be below 120 ℃, and pressing down the composite punch (1) to form the plate blank (3) on the straight wall section (2.4.1);
s3: when the low-melting-point alloy (1.2) is abutted against the bottom of the model groove (2.4), controlling the temperature of the mould component (2) to be more than or equal to 155 and less than 175 ℃, and integrally forming the first special-shaped part (2.4.3);
s4: and after the first special-shaped part (2.4.3) is integrally formed, controlling the temperature of the mold component (2) to be more than or equal to 135 and t less than 155 ℃, and integrally forming the second special-shaped part (2.4.4).
8. The processing method used by the device for the phase-change composite forming of the special-shaped piece according to claim 7, characterized in that:
s5: after the plate blank (3) is shaped, the composite punch (1) is withdrawn, the pressing plate (5) moves upwards, and the ejector rod (4) is ejected out of the forming mold core (2.2);
s6: the forming mold core (2.2) is disassembled into a plurality of mold cores (2.2.1), and the formed plate is taken out;
s7: the plate is placed in an environment above 175 ℃ and is reversed, and the low-melting-point alloy (1.2) in the plate is separated and collected for manufacturing the composite punch (1) again.
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| CN202110883426.6A CN113751588B (en) | 2021-08-03 | 2021-08-03 | Special-shaped piece phase change composite forming device and machining method |
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| CN202110883426.6A CN113751588B (en) | 2021-08-03 | 2021-08-03 | Special-shaped piece phase change composite forming device and machining method |
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| FR2641216B1 (en) * | 1988-12-30 | 1994-04-01 | Isoform | PROCESS AND DEVICE FOR STAMPING SHEET MATERIALS WITH DEFORMABLE PUNCHER UNDER DIVER |
| DE10164834B4 (en) * | 2001-12-04 | 2004-09-16 | Roche Diagnostics Gmbh | Holder for samples and complete film for holding samples |
| JP2004082141A (en) * | 2002-08-23 | 2004-03-18 | Uk:Kk | Method and apparatus for manufacturing hollow stepped shaft |
| CN100368108C (en) * | 2004-11-22 | 2008-02-13 | 比亚迪股份有限公司 | Bending stretch shaping method and shaper for low-melting point alloy mould |
| JP2013104465A (en) * | 2011-11-11 | 2013-05-30 | Sanwa Boeki Kk | Method for manufacturing multi-way pipe joint |
| CN203390061U (en) * | 2013-07-16 | 2014-01-15 | 陕西理工学院 | Low-melting-point alloy mold applicable to punching |
| CN203470599U (en) * | 2013-09-18 | 2014-03-12 | 贵州航天精工制造有限公司 | Solid paraffin bulging tool |
| CN109772990B (en) * | 2019-01-28 | 2020-08-18 | 宁波市沃瑞斯机械科技有限公司 | Semi-solid rheological internal high-pressure forming device and method based on low-melting-point alloy |
| CN112845782A (en) * | 2021-01-28 | 2021-05-28 | 浙江理工大学 | Solid particle medium forming method and equipment |
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