CN114273576A - Material-saving forging process for middle hardware of fuse - Google Patents
Material-saving forging process for middle hardware of fuse Download PDFInfo
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- CN114273576A CN114273576A CN202111504208.3A CN202111504208A CN114273576A CN 114273576 A CN114273576 A CN 114273576A CN 202111504208 A CN202111504208 A CN 202111504208A CN 114273576 A CN114273576 A CN 114273576A
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Abstract
The invention relates to a material saving and forging process for middle hardware fittings of fuses, which comprises the steps of firstly, taking a short and thick raw material, forming a slender material capable of forming two middle hardware fittings in a rolling manner, then, beating and bending the slender material, so that the slender material is formed into a semi-finished product of a hardware fitting connecting cylinder, a hardware fitting flat body and a hardware fitting outer cylinder, then, forging and forming are carried out, so that two middle hardware fittings which are connected together are formed, and finally, cutting is carried out, so that the two required middle hardware fittings are formed. The invention has the advantages that: through the matching of the procedures of rolling, flattening, bending, forging, cutting and the like, one metal raw material can be used for processing two fuse middle hardware fittings finished products, the utilization rate of the raw material is improved, the waste of the material is reduced, and the material is relatively saved.
Description
Technical Field
The invention relates to the field of fuse hardware fitting processing, in particular to a material-saving forging process for a middle hardware fitting of a fuse.
Background
A fuse (fuse) is an electric device that fuses a fuse body by heat generated by itself when a current exceeds a predetermined value, thereby breaking an electric circuit. The fuse melts the melt by the heat generated by the fuse after the current exceeds a specified value for a period of time, so as to cut off the circuit; a current protector is made by applying the principle. The fuse is widely applied to high and low voltage distribution systems, control systems and electric equipment, and is one of the most commonly applied protection devices as a short circuit and overcurrent protector.
Fuse is when installing, can all use the middle part gold utensil to the middle part position of fuse generally to cooperate, as shown in fig. 1, fuse middle part gold utensil is including the gold utensil outer cylinder 1 that connects gradually, gold utensil connecting cylinder 2, the flat body 3 of gold utensil, wherein the central line of the outer cylinder 1 of gold utensil and the central line mutually perpendicular of gold utensil connecting cylinder 2, the 3 slopes of the flat body 3 of gold utensil sets up, and the incline direction of the flat body 3 of gold utensil is for from the 3 one side that link to each other of the flat body 3 of gold utensil and gold utensil connecting cylinder 2 its central line direction slope of keeping away from gold utensil connecting cylinder 2 gradually.
In the process of processing the middle hardware fitting of the fuse, the traditional mode adopts a casting forming mode, the mode is relatively simple in processing, the processed shape is very similar to that of the middle hardware fitting of the fuse, the subsequent processing is less, but correspondingly, the defects of internal looseness, thick structure and the like easily exist, and the mechanical property is not very good. Therefore, in response to such a defect, a forging method is proposed to improve the mechanical properties thereof.
However, in the existing forging processing mode, a relatively thick raw material is taken, and a mode of forging for multiple times is adopted, so that the hardware outer cylinder 1, the hardware connecting cylinder 2 and the hardware flat body 3 are formed, at this time, the central line of the hardware flat body 3 is consistent with the central line of the hardware connecting cylinder 2, and finally, the hardware flat body 3 is bent, so that the required fuse middle hardware is formed. In the forging mode, the cylindrical raw material with the diameter larger than the height of the outer cylinder of the hardware fitting and the length consistent with the total length of the hardware fitting in the middle of the fuse is required to be forged, one raw material is only forged into one workpiece, and the diameter of the hardware fitting connecting cylinder 2 and the width of the hardware fitting flat body 3 are both far smaller than the height of the outer cylinder of the hardware fitting, so that material waste is caused; in addition, the hardware connecting cylinder 2 and the hardware flat body 3 can be formed only by forging the raw materials for multiple times in the manner, so that the phenomenon of breakage is easily caused, particularly for the hardware flat body 3, the size of the hardware flat body is far smaller than the size of the hardware flat body, correspondingly, the number of times of forging is the largest, the phenomenon of breakage is easily caused correspondingly, the product is scrapped, and the production cost is increased.
Disclosure of Invention
The invention aims to provide a material-saving forging process for middle hardware fittings of fuses, which can save raw materials and reduce the generation of scrapped products.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a fuse middle part gold utensil festival material forging process, fuse middle part gold utensil is including the gold utensil outer cylinder that connects gradually, gold utensil connecting cylinder, the flat body of gold utensil, wherein the central line of the outer cylinder of gold utensil and the central line mutually perpendicular of gold utensil connecting cylinder, the slope of the flat body of gold utensil sets up, and the incline direction of the flat body of gold utensil for from the continuous one side of the flat body of gold utensil and gold utensil connecting cylinder its central line direction slope to keeping away from gold utensil connecting cylinder gradually, its characterized in that: the forging process comprises the following steps: at first, get a short and thick raw materials, form a slender material that can two middle part gold tools of shaping through the mode of rolling the base earlier, clap flat, bend to slender material again to go out the semi-manufactured goods of gold tool connecting cylinder, gold tool flat body and gold tool outer cylinder with slender material shaping, then forge the shaping again, thereby form two middle part gold tools that link together, cut off at last, thereby formed two required middle part gold tools.
Furthermore, in the middle hardware fitting, the height of an outer cylinder of the hardware fitting is h1The diameter of the outer cylinder of the hardware fitting is R1The height of the hardware fitting connecting cylinder is h2The diameter of the hardware fitting connecting cylinder is R2The total length of the hardware flat body and the hardware connecting cylinder after the hardware flat body is laid flat is L1The thickness of the hardware flat body is D, and the length of the hardware flat body is L2The forging process comprises the following specific steps:
s1 rolling: firstly, a short thick cylindrical metal raw material is taken and sent to a blank rolling machine for processing, so that the metal raw material is pressed into a long and thin material which consists of a middle cylindrical section positioned at the middle part and two sides positioned at two sidesThe side cylindrical sections of (a), wherein the height of the middle cylindrical section is more than 2L1The diameter of the middle cylindrical section is more than or equal to R2R is less than or equal to the height of the side cylindrical section1The diameter of the lateral cylindrical section is greater than R1And the diameter of the side cylindrical section is less than h1；
S2 flattening and bending: then sending the slender materials into a special first die to perform flattening and bending treatment on the middle cylindrical section of the slender materials so as to form a semi-finished product, wherein the semi-finished product comprises a first section positioned in the middle, two second sections connected to two sides of the first section and side cylindrical sections connected to the outer sides of the two second sections, the first section is flat, and the length of the first section is more than 2L1The thickness of the first section = D, the first section is two connected hardware flat bodies, the second section is cylindrical, and the diameter of the second section = R2Height = h of the second segment2The second section is a required hardware fitting connecting cylinder, and at the moment, the central line of the side cylindrical section and the central line of the second section are in the same straight line;
s3 forging and forming: sending the semi-finished product into a special second die, forging and forming the side cylindrical section, and performing primary cutting processing on the first section to form a primary finished product, wherein the primary finished product comprises a first section positioned in the middle, two second sections connected to two sides of the first section, and a third section connected to the outer sides of the two second sections, two cutting grooves extending towards the center direction of the first section are formed in the middle of the first section, so that the first section forms a structure jointly consisting of two first sections and two connecting sections of the first sections, the thickness = D of the first sections, and the length = L of the first sections2Namely, the first segment is a required hardware flat body, the third segment is cylindrical, and the diameter = R of the third segment1Height = h of the third section1At this time, the central line of the third section is perpendicular to the central line of the second section, namely, the third section is the outer cylinder of the required hardware;
s4 cutting: and sending the primary finished product into a special third die, and cutting off the connecting section of the first section to separate the two first sections, thereby forming two required finished hardware fittings in the middle of the fuse.
Further, in step S2, the dedicated first mold includes a first upper mold and a first lower mold which are distributed vertically;
the bottom end of the first upper die is provided with a first positioning bulge which protrudes downwards, the cross section of the first positioning bulge is in an isosceles trapezoid shape, the top end of the first lower die is provided with a first positioning groove which is matched with the first positioning bulge, the cross section of the first positioning groove is also in an isosceles trapezoid shape, and when the first upper die and the first lower die are assembled, the first positioning bulge is embedded into the first positioning groove, so that the positioning and assembling of the first upper die and the first lower die are realized;
the bottom end of the first upper die is provided with a first upper forging groove, the first upper forging groove comprises a first groove arranged on the lower bottom of the first positioning protrusion and second grooves positioned on two sides of the first groove and arranged on the waist of the first positioning protrusion, the top end of the first lower die is provided with a first lower forging groove, the first lower forging groove comprises a third groove arranged on the lower bottom of the first positioning groove and fourth grooves positioned on two sides of the third groove and arranged on the waist of the first positioning groove, after the first upper die and the first lower die are assembled, the first groove and the third groove are matched together to form a first section of molding cavity, and the second groove and the fourth groove are matched together to form a second section of molding cavity;
and third grooves connected with the second grooves are formed in the two sides of the first upper die and used for avoiding the side cylindrical sections.
Further, in step S3, the dedicated second mold includes a second upper mold and a second lower mold which are distributed vertically;
the bottom end of the second upper die is provided with a second upper groove, the top end of the second lower die is provided with a second lower groove, the cross sections of the second upper groove and the second lower groove are in an isosceles trapezoid shape, the upper bottom of the second upper groove is longer than the lower bottom of the second upper groove, the upper bottom of the second lower groove is shorter than the lower bottom of the second lower groove, and after the second upper die and the second lower die are assembled, the second upper groove and the second lower groove are matched together to form an avoiding cavity for forming;
the bottom end of the second upper die is provided with a second upper forging seat arranged at the upper bottom of the second upper groove, the bottom end surface of the second upper forging seat is provided with a pair of second upper forging grooves which are symmetrically distributed, each second upper forging groove comprises a fifth groove, a sixth groove and a seventh groove which are sequentially distributed, a downward convex primary upper rib plate is further arranged between the two second upper forging grooves on the bottom end surface of the second upper forging seat, the top end of the second lower die is provided with a second lower forging seat arranged at the lower bottom of the second lower groove, the top end surface of the second lower forging seat is provided with a pair of second lower forging grooves which are symmetrically distributed, each second lower forging groove comprises an eighth groove, a ninth groove and a tenth groove which are sequentially distributed, a upward convex primary lower rib plate is further arranged between the two second lower forging grooves on the top end surface of the second lower forging seat, the second upper die, the second upper forging seat, the seventh upper forging seat, the second lower die and the second lower forging seat, After the second lower die is closed, the fifth groove and the eighth groove are matched together to form a third section of forming cavity, the sixth groove and the ninth groove are matched together to form a second section of forming cavity, the seventh groove and the tenth groove are matched together to form a first section of forming cavity, and the preliminary cut upper rib plate and the preliminary cut lower rib plate are matched together to press the cutting grooves on two sides of the first section.
Further, in step S4, the dedicated third mold includes an upper cutting base and a lower cutting base which are distributed vertically;
an upper cutter is installed at the bottom end of the upper cutting seat, a pair of limiting seats which are distributed in parallel are installed on the upper end face of the lower base, a gap for inserting the first section is reserved between the two limiting seats, and a cutter groove for inserting the upper cutter is formed in each limiting seat;
the two sides of the upper cutter are provided with guide columns, so that the whole upper cutter is in an I shape, and the limiting seat is also provided with guide grooves communicated with the cutter grooves, so that the cutter grooves on the limiting seat are in a T shape.
The invention has the advantages that: according to the forging process, through the matching of the procedures of rolling, beating, bending, forging forming, cutting and the like, one metal raw material can be used for processing two hardware fittings at the middle parts of the fuses, the utilization rate of the raw material is improved, the waste of the material is reduced, and the material is saved relatively.
In addition, the whole processing process can be formed by forging for two times, so that the forging times are greatly reduced, the compression deformation during forging is correspondingly reduced, the phenomenon of cracks on the surface of a product is reduced, the generation of waste products is reduced, and the cost is reduced.
Due to the design of the special first mold, the matching between the first positioning protrusion and the first positioning groove realizes the positioning of the mold closing positions of the first upper mold and the first lower mold, and ensures the mold closing accuracy; and the design of third recess, then because whole processing course needs involve buckling between second section and the first section, can lead to taking place mutual interference between side cylinder section and the first mould like this, consequently dodges the side cylinder section through the third recess, has avoided the emergence of this kind of mutual interference's phenomenon.
Due to the design of the special second die, an avoidance cavity is formed by the matching of the second upper groove and the second lower groove, and a foundation is provided for the smooth forging; the design of the primary cutting upper rib plate and the primary cutting lower rib plate is to press cutting grooves on two sides of the first section in advance in the forging process, so that the cutting amount of a subsequent upper cutter is reduced, and a good foundation is provided for smooth cutting.
The special third die is designed, the upper cutter and the cutter groove are matched to cut off the first section, the stability of the action process of the upper cutter is ensured, the phenomenon of deviation is avoided, and the guide column and the guide groove are designed to guide the upper cutter and further stabilize the action process of the upper cutter.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic diagram of a middle hardware of a fuse in the present invention.
Figure 2 is a schematic view of an elongated material according to the present invention.
FIG. 3 is a schematic view of the semi-finished product of the present invention.
Fig. 4 is a schematic view showing a clamping state of the first mold dedicated to the present invention.
Fig. 5 is a schematic view of the open state of the first mold dedicated to the present invention.
FIG. 6 is a schematic view showing a molding state of the semi-finished product of the present invention.
Fig. 7 is a schematic view of a first upper die of the present invention.
Fig. 8 is a schematic view of a first lower die in the present invention.
Fig. 9 is a mold clamping front view of a second mold dedicated to the present invention.
Fig. 10 is a side view of a mold clamping of a second mold dedicated to the present invention.
Fig. 11 is a schematic view of a second upper die of the present invention.
Fig. 12 is a schematic view of a second lower die in the present invention.
Fig. 13 is a schematic view showing a semi-finished product placed on a second lower mold in the present invention.
Fig. 14 is a schematic view of a third mold dedicated to the present invention.
FIG. 15 is a schematic cut-away view of the preform of the present invention.
Fig. 16 is a sectional view of an upper cutter in the present invention.
Fig. 17 is a schematic view of the primary product of the present invention placed on a dedicated third mold.
Detailed Description
The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.
Fuse middle part gold utensil as shown in fig. 1 includes the gold utensil outer cylinder 1, gold utensil connecting cylinder 2, the flat body 3 of gold utensil that connects gradually, and wherein the central line of the outer cylinder 1 of gold utensil and the central line mutually perpendicular of gold utensil connecting cylinder 2, the slope of the flat body 3 of gold utensil sets up, and the incline direction of the flat body 3 of gold utensil is from the one side that the flat body 3 of gold utensil links to each other with gold utensil connecting cylinder 2 its central line direction slope of keeping away from gold utensil connecting cylinder 2 gradually.
In the hardware fitting in the middle of the fuse, the height of the outer cylinder 1 of the hardware fitting is h1The diameter of the outer cylinder 1 of the hardware fitting is R1Hardware connection cylinderHeight of 2 is h2The diameter of the hardware fitting connecting cylinder 2 is R2The total length of the hardware flat body 3 and the hardware connecting cylinder 2 after the hardware flat body 3 is laid flat is L1The thickness of the hardware flat body 3 is D, and the length of the hardware flat body 3 is L2。
The middle hardware material-saving forging process of the fuse is realized by the following steps:
s1 rolling: firstly, a short, thick and cylindrical metal raw material is taken and sent to a blank rolling mill for processing, so that the metal raw material is pressed into a long and thin material, as shown in figure 2, the long and thin material consists of a middle cylindrical section 11 positioned at the middle position and side cylindrical sections 12 positioned at two sides, wherein the height of the middle cylindrical section 11 is more than 2L1The diameter of the middle cylindrical section 11 is more than or equal to R2R is greater than or equal to the height of the side cylindrical section 121The diameter of the lateral cylindrical section 12 > R1And the diameter of the side cylindrical section 12 is less than h1。
S2 flattening and bending: then the slender materials are sent into a special first die to carry out flattening and bending treatment on the middle cylindrical section 11 of the slender materials, thereby forming a semi-finished product, as shown in figure 3, the semi-finished product comprises a first section 21 positioned in the middle, two second sections 22 connected to two sides of the first section 21, and a side cylindrical section 12 connected to the outer sides of the two second sections 22, wherein the first section 21 is flat, and the length of the first section 21 is more than 2L1The thickness of the first section 21 = D, the first section 21 is two connected hardware flat bodies 3, the second section 22 is cylindrical, and the diameter of the second section 22 = R2Height = h of the second segment 222That is, the second segment 22 is the required fitting connection cylinder 2, and at this time, the center line of the side cylindrical segment 12 and the center line of the second segment 22 are the same straight line.
As can be seen from the schematic diagrams shown in fig. 4 to 8, the dedicated first mold includes a first upper mold 23 and a first lower mold 24 which are vertically distributed, and the first upper mold 23 is driven by a corresponding hydraulic cylinder to be vertically lifted, thereby realizing opening and closing of the first lower mold 24.
The bottom end of the first upper die 23 is provided with a first positioning protrusion 25 protruding downwards, the cross section of the first positioning protrusion 25 is in an isosceles trapezoid shape, the top end of the first lower die 24 is provided with a first positioning groove 26 matched with the first positioning protrusion 25, the cross section of the first positioning groove 26 is also in an isosceles trapezoid shape, and when the first upper die 23 and the first lower die 24 are assembled, the first positioning protrusion 25 is embedded into the first positioning groove 26, so that the positioning and assembling of the first upper die 23 and the first lower die 24 are realized.
The bottom end of the first upper die 23 is provided with a first upper forging groove, the first upper forging groove comprises a first groove 231 arranged on the lower bottom of the first positioning protrusion 25 and a second groove 232 located on two sides of the first groove 231 and arranged on the waist of the first positioning protrusion 25, the top end of the first lower die 24 is provided with a first lower forging groove, the first lower forging groove comprises a third groove 241 arranged on the lower bottom of the first positioning groove 26 and a fourth groove 242 located on two sides of the third groove 241 and arranged on the waist of the first positioning groove 26, after the first upper die 23 and the first lower die 24 are closed, the first groove 231 and the third groove 241 cooperate to form a molding cavity of the first section 21, and the second groove 232 and the fourth groove 242 cooperate to form a molding cavity of the second section 22.
Both sides of the first upper die 23 are provided with a third groove 233 connected with the second groove 232, and the third groove 233 is used for avoiding the side cylindrical section 12.
Due to the design of the special first mold, the first positioning protrusion 25 is matched with the first positioning groove 26, so that the positions of the first upper mold 23 and the first lower mold 24 are positioned, and the mold closing accuracy is ensured; the third groove 233 is designed such that the second section 22 and the first section 21 need to be bent in the whole machining process, which causes mutual interference between the side cylindrical section 12 and the first upper die 23, and the side cylindrical section 12 is avoided by the third groove 233, thereby avoiding the mutual interference.
S3 forging and forming: then the semi-finished product is sent into a special second die, the side cylindrical section is forged and formed, and the first section is subjected to primary cutting processing, so that a primary finished product is formed, wherein the primary finished product comprises a first section 21 positioned in the middle part, two second sections 22 connected to the two sides of the first section 21 and two second sections connected to the two first sections 21A third section 27 outside the second section 22, wherein the first section 21 has two cutting grooves extending toward the center of the first section 21 at the middle position, so that the first section forms a structure composed of two first sections 28 and a connecting section of the two first sections 28, the thickness of the first section 28 = D, and the length of the first section 28 = L2That is, the first segment 28 is a desired hardware flat body, the third segment 27 is cylindrical, and the diameter = R of the third segment 271Height = h of the third section 271At this time, the center line of the third segment 27 is perpendicular to the center line of the second segment 22, that is, the third segment 27 is a desired outer cylinder of the fitting.
As can be seen from the schematic diagrams shown in fig. 9 to 13, the dedicated second mold includes a second upper mold 31 and a second lower mold 32 which are distributed vertically, and the second upper mold 31 is driven by a corresponding hydraulic cylinder to move vertically, so as to open and close the second lower mold 32.
The bottom end of the second upper die 31 is provided with a second upper groove 33, the top end of the second lower die 32 is provided with a second lower groove 34, the cross sections of the second upper groove 33 and the second lower groove 34 are both in an isosceles trapezoid shape, the upper bottom of the second upper groove 33 is longer than the lower bottom of the second upper groove 33, the upper bottom of the second lower groove 34 is shorter than the lower bottom of the second lower groove 34, and after the second upper die 31 and the second lower die 32 are closed, the second upper groove 33 and the second lower groove 34 are matched together to form an avoiding cavity 35 for forming.
A second upper forging base 311 arranged at the upper bottom of the second upper groove 33 is arranged at the bottom end of the second upper die 31, a pair of symmetrically distributed second upper forging grooves are formed on the bottom end surface of the second upper forging base 311, the second upper forging grooves comprise a fifth groove 312, a sixth groove 313 and a seventh groove 314 which are distributed in sequence, a downward convex primary upper rib plate 315 is further arranged between the two second upper forging grooves on the bottom end surface of the second upper forging base 311, a second lower forging base 321 arranged at the lower bottom of the second lower groove 34 is arranged at the top end of the second lower die 32, a pair of symmetrically distributed second lower forging grooves are formed on the top end surface of the second lower forging base 321, the second lower forging grooves comprise an eighth groove 322, a ninth groove 323 and a tenth groove 324 which are distributed in sequence, and a upward convex primary lower rib plate 325 is further arranged between the two second lower forging grooves on the top end surface of the second lower forging base 321, after the second upper die 31 and the second lower die 32 are closed, the fifth groove 312 and the eighth groove 322 cooperate together to form a molding cavity of the third section 27, the sixth groove 313 and the ninth groove 323 cooperate together to form a molding cavity of the second section 22, the seventh groove 314 and the tenth groove 324 cooperate together to form a molding cavity of the first section 23, and the preliminary cut upper rib plate 315 and the preliminary cut lower rib plate 325 cooperate together to press the cutting grooves on both sides of the first section 21.
The design of the special second die forms an avoidance cavity 35 through the cooperation of the second upper groove 33 and the second lower groove 34, and provides a foundation for smooth forging; the design of the preliminary cut upper rib plate 315 and the preliminary cut lower rib plate 325 is to press the cutting grooves on both sides of the first segment 21 in advance during the forging process, and because the first segment 21 is cut along the width direction of the first segment 21 when the upper cutter 43 is used to cut the first segment 21, the width dimension of the first segment 21 is much larger than the thickness dimension of the first segment 21, the cutting grooves are used to reduce the subsequent cutting amount of the upper cutter 43, thereby providing a good basis for the smooth cutting.
S4 cutting: and sending the primary finished product into a special third die, and cutting off the connecting section of the first section 21 to separate the two first sections 28, so that the required two fuse middle hardware fittings are formed.
As can be seen from the schematic diagrams shown in fig. 14-17, the special third mold includes an upper cutting base 41 and a lower cutting base 42 which are distributed up and down, and the upper cutting base 41 is driven by a corresponding hydraulic cylinder to move up and down, so as to cooperate with the lower cutting base 42 to cut off the connecting section.
An upper cutter 43 is mounted at the bottom end of the upper cutter holder 41, a pair of limiting holders 44 are mounted on the upper end surface of the lower base 42 in parallel, a gap for inserting the first subsection 28 is reserved between the two limiting holders 44, and a cutter groove for inserting the upper cutter 43 is further formed in the limiting holders 44.
Both sides of the upper cutter 43 are provided with a guide post 45, so that the whole upper cutter 43 is in an I shape, and the limiting seat 44 is also provided with a guide groove communicated with the cutter groove, so that the cutter groove on the limiting seat is in a T shape. The special third die is designed, the upper cutter and the cutter groove are matched to cut off the first section, the stability of the action process of the upper cutter is ensured, the phenomenon of deviation is avoided, and the guide column and the guide groove are designed to guide the upper cutter and further stabilize the action process of the upper cutter.
According to the material saving and forging process for the middle hardware fitting of the fuse, through the matching of the procedures of rolling, beating, bending, forging, forming, cutting and the like, one metal raw material can be used for processing two finished middle hardware fittings of the fuse, the utilization rate of the raw material is improved, the waste of the material is reduced, and the material is relatively saved; in addition, the whole processing process can be formed by forging for two times, so that the forging times are greatly reduced, the compression deformation during forging is correspondingly reduced, the phenomenon of cracks on the surface of a product is reduced, the generation of waste products is reduced, and the cost is reduced.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a fuse middle part gold utensil festival material forging process, fuse middle part gold utensil is including the gold utensil outer cylinder that connects gradually, gold utensil connecting cylinder, the flat body of gold utensil, wherein the central line of the outer cylinder of gold utensil and the central line mutually perpendicular of gold utensil connecting cylinder, the slope of the flat body of gold utensil sets up, and the incline direction of the flat body of gold utensil for from the continuous one side of the flat body of gold utensil and gold utensil connecting cylinder its central line direction slope to keeping away from gold utensil connecting cylinder gradually, its characterized in that: the forging process comprises the following steps:
at first, get a short and thick raw materials, form a slender material that can two middle part gold tools of shaping through the mode of rolling the base earlier, clap flat, bend to slender material again to go out the semi-manufactured goods of gold tool connecting cylinder, gold tool flat body and gold tool outer cylinder with slender material shaping, then forge the shaping again, thereby form two middle part gold tools that link together, cut off at last, thereby formed two required middle part gold tools.
2. The middle hardware material-saving forging process of the fuse as claimed in claim 1, wherein: in the middle hardware fitting, the height of an outer cylinder of the hardware fitting is h1The diameter of the outer cylinder of the hardware fitting is R1The height of the hardware fitting connecting cylinder is h2The diameter of the hardware fitting connecting cylinder is R2The total length of the hardware flat body and the hardware connecting cylinder after the hardware flat body is laid flat is L1The thickness of the hardware flat body is D, and the length of the hardware flat body is L2The forging process comprises the following specific steps:
s1 rolling: firstly, taking a short and thick cylindrical metal raw material, conveying the metal raw material to a blank rolling machine for processing, and pressing the metal raw material into a long and thin material, wherein the long and thin material consists of a middle cylindrical section positioned at the middle part and side cylindrical sections positioned at two sides, and the height of the middle cylindrical section is more than 2L1The diameter of the middle cylindrical section is more than or equal to R2R is less than or equal to the height of the side cylindrical section1The diameter of the lateral cylindrical section is greater than R1And the diameter of the side cylindrical section is less than h1；
S2 flattening and bending: then sending the slender materials into a special first die to perform flattening and bending treatment on the middle cylindrical section of the slender materials so as to form a semi-finished product, wherein the semi-finished product comprises a first section positioned in the middle, two second sections connected to two sides of the first section and side cylindrical sections connected to the outer sides of the two second sections, the first section is flat, and the length of the first section is more than 2L1The thickness of the first section = D, the first section is two connected hardware flat bodies, the second section is cylindrical, and the diameter of the second section = R2Height = h of the second segment2I.e. the second stage is as desiredThe fitting is connected with the cylinder, and at the moment, the central line of the side cylindrical section and the central line of the second section are in the same straight line;
s3 forging and forming: sending the semi-finished product into a special second die, forging and forming the side cylindrical section, and performing primary cutting processing on the first section to form a primary finished product, wherein the primary finished product comprises a first section positioned in the middle, two second sections connected to two sides of the first section, and a third section connected to the outer sides of the two second sections, two cutting grooves extending towards the center direction of the first section are formed in the middle of the first section, so that the first section forms a structure jointly consisting of two first sections and two connecting sections of the first sections, the thickness = D of the first sections, and the length = L of the first sections2Namely, the first segment is a required hardware flat body, the third segment is cylindrical, and the diameter = R of the third segment1Height = h of the third section1At this time, the central line of the third section is perpendicular to the central line of the second section, namely, the third section is the outer cylinder of the required hardware;
s4 cutting: and sending the primary finished product into a special third die, and cutting off the connecting section of the first section to separate the two first sections, thereby forming two required finished hardware fittings in the middle of the fuse.
3. The middle hardware material-saving forging process of the fuse as claimed in claim 2, wherein: in step S2, the dedicated first mold includes a first upper mold and a first lower mold which are distributed vertically;
the bottom end of the first upper die is provided with a first positioning bulge which protrudes downwards, the cross section of the first positioning bulge is in an isosceles trapezoid shape, the top end of the first lower die is provided with a first positioning groove which is matched with the first positioning bulge, the cross section of the first positioning groove is also in an isosceles trapezoid shape, and when the first upper die and the first lower die are assembled, the first positioning bulge is embedded into the first positioning groove, so that the positioning and assembling of the first upper die and the first lower die are realized;
the bottom end of the first upper die is provided with a first upper forging groove, the first upper forging groove comprises a first groove arranged on the lower bottom of the first positioning protrusion and second grooves positioned on two sides of the first groove and arranged on the waist of the first positioning protrusion, the top end of the first lower die is provided with a first lower forging groove, the first lower forging groove comprises a third groove arranged on the lower bottom of the first positioning groove and fourth grooves positioned on two sides of the third groove and arranged on the waist of the first positioning groove, after the first upper die and the first lower die are assembled, the first groove and the third groove are matched together to form a first section of molding cavity, and the second groove and the fourth groove are matched together to form a second section of molding cavity;
and third grooves connected with the second grooves are formed in the two sides of the first upper die and used for avoiding the side cylindrical sections.
4. The middle hardware material-saving forging process of the fuse as claimed in claim 2, wherein: in step S3, the dedicated second mold includes a second upper mold and a second lower mold which are distributed vertically;
the bottom end of the second upper die is provided with a second upper groove, the top end of the second lower die is provided with a second lower groove, the cross sections of the second upper groove and the second lower groove are in an isosceles trapezoid shape, the upper bottom of the second upper groove is longer than the lower bottom of the second upper groove, the upper bottom of the second lower groove is shorter than the lower bottom of the second lower groove, and after the second upper die and the second lower die are assembled, the second upper groove and the second lower groove are matched together to form an avoiding cavity for forming;
the bottom end of the second upper die is provided with a second upper forging seat arranged at the upper bottom of the second upper groove, the bottom end surface of the second upper forging seat is provided with a pair of second upper forging grooves which are symmetrically distributed, each second upper forging groove comprises a fifth groove, a sixth groove and a seventh groove which are sequentially distributed, a downward convex primary upper rib plate is further arranged between the two second upper forging grooves on the bottom end surface of the second upper forging seat, the top end of the second lower die is provided with a second lower forging seat arranged at the lower bottom of the second lower groove, the top end surface of the second lower forging seat is provided with a pair of second lower forging grooves which are symmetrically distributed, each second lower forging groove comprises an eighth groove, a ninth groove and a tenth groove which are sequentially distributed, a upward convex primary lower rib plate is further arranged between the two second lower forging grooves on the top end surface of the second lower forging seat, the second upper die, the second upper forging seat, the seventh upper forging seat, the second lower die and the second lower forging seat, After the second lower die is closed, the fifth groove and the eighth groove are matched together to form a third section of forming cavity, the sixth groove and the ninth groove are matched together to form a second section of forming cavity, the seventh groove and the tenth groove are matched together to form a first section of forming cavity, and the preliminary cut upper rib plate and the preliminary cut lower rib plate are matched together to press the cutting grooves on two sides of the first section.
5. The middle hardware material-saving forging process of the fuse as claimed in claim 2, wherein: in step S4, the special third mold includes an upper cutting base and a lower cutting base which are distributed vertically;
an upper cutter is installed at the bottom end of the upper cutting seat, a pair of limiting seats which are distributed in parallel are installed on the upper end face of the lower base, a gap for inserting the first section is reserved between the two limiting seats, and a cutter groove for inserting the upper cutter is formed in each limiting seat;
the two sides of the upper cutter are provided with guide columns, so that the whole upper cutter is in an I shape, and the limiting seat is also provided with guide grooves communicated with the cutter grooves, so that the cutter grooves on the limiting seat are in a T shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111504208.3A CN114273576A (en) | 2021-12-10 | 2021-12-10 | Material-saving forging process for middle hardware of fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111504208.3A CN114273576A (en) | 2021-12-10 | 2021-12-10 | Material-saving forging process for middle hardware of fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114273576A true CN114273576A (en) | 2022-04-05 |
Family
ID=80871562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111504208.3A Pending CN114273576A (en) | 2021-12-10 | 2021-12-10 | Material-saving forging process for middle hardware of fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114273576A (en) |
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2021
- 2021-12-10 CN CN202111504208.3A patent/CN114273576A/en active Pending
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