CN212495170U - Hexagonal flange screwed pipe mound system of processing - Google Patents
Hexagonal flange screwed pipe mound system of processing Download PDFInfo
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- CN212495170U CN212495170U CN202021676307.0U CN202021676307U CN212495170U CN 212495170 U CN212495170 U CN 212495170U CN 202021676307 U CN202021676307 U CN 202021676307U CN 212495170 U CN212495170 U CN 212495170U
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Abstract
The utility model relates to a hexagonal flange screwed pipe processing technology field discloses a hexagonal flange screwed pipe mound system of processing, and this system of processing includes first cold-heading mould, second cold-heading mould, third cold-heading mould, fourth cold-heading mould and fifth cold-heading mould, and the first preforming piece is made through first cold-heading mould mound to the forging raw materials, the second preforming piece is made through second cold-heading mould mound to first preforming piece, the third preforming piece is made through third cold-heading mould mound to the second preforming piece, the fourth preforming piece is made through fourth cold-heading mould mound, the fourth preforming piece is made into hexagonal flange bolt pipe finished product through fifth cold-heading mould mound.
Description
Technical Field
The utility model relates to a hexagonal flange screwed pipe processing technology field especially relates to a hexagonal flange screwed pipe mound system of processing system.
Background
The hexagonal flange threaded pipe is used as a fastener and has extremely wide application in production and life at ordinary times, the existing hexagonal flange threaded pipe mainly comprises a head part and a pipe body part which are integrally formed, the head part mainly comprises a hexagonal head and a flange plate, and an axial blind hole is formed in the pipe body part.
At present, in the process of machining and producing the hexagonal flange threaded pipe, a conventional forging raw material is pre-upset into a flange threaded pipe blank through a cold header, and then the head of the flange threaded pipe blank upset by the cold header is cut into a hexagonal head shape through an edge cutting machine. But current bead cutter is when the head of processing flange screwed pipe blank, and not only work efficiency is lower, and the problem that the partial surface unevenness of hexagonal head type often appears in the hexagonal head type of the flange screwed pipe of machine-shaping moreover, and the burr is many leads to surface quality relatively poor, size precision is low, and then influences the whole quality of the hexagonal flange screwed pipe of machine-shaping.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an it is providing a hexagonal flange screwed pipe mound system of processing to overcome prior art and pass through the problem that size precision is low that the surface quality of the hexagonal flange screwed pipe of bead cutter processing formation is poor.
In order to achieve the above purpose, the basic scheme of the utility model is as follows: a processing system for a hexagonal flange threaded pipe pier comprises first cold heading equipment, second cold heading equipment, third cold heading equipment, fourth cold heading equipment and fifth cold heading equipment, wherein the first cold heading equipment comprises a first cold heading die, the second cold heading equipment comprises a second cold heading die, the third cold heading equipment comprises a third cold heading die, the fourth cold heading equipment comprises a fourth cold heading die, and the fifth cold heading equipment comprises a fifth cold heading die;
forging the forging stock into a first preform through a first cold-heading die, wherein the first cold-heading die comprises a first male die and a first female die which are matched with each other, and a first upper die cavity for forming a first head part of the first preform is formed in the first male die; a first lower die cavity for forming a first rod body part of a first preform is formed in the first female die, the first lower die cavity sequentially comprises a first lower top die cavity, a first lower middle die cavity and a first lower bottom die cavity from top to bottom, the first lower top die cavity is used for forming a first upper rod body part of the first rod body part, the first lower middle die cavity is used for forming a first middle rod body part of the first rod body part, and the first lower bottom die cavity is used for forming a first lower rod body part of the first rod body part;
the first preform is upset into a second preform through a second cold-heading die, the second cold-heading die comprises a second male die and a second female die which are matched with each other, a second upper die cavity for upsetting a second head part forming the second preform is arranged in the second male die, the second upper die cavity comprises a second upper top die cavity and a second upper bottom die cavity, the second upper top die cavity is used for upsetting a second upper head part forming the second head part, and a hexagonal bulge for upsetting a hexagonal recess forming the end surface of the second upper head part is arranged at the top of the second upper top die cavity; the second upper bottom die cavity is used for upsetting a second lower head part forming a second head part, and the second lower head part is a flange part of the second head part; a second lower die cavity for upsetting a second rod body part forming a second preform is formed in the second female die; the second lower die cavity sequentially comprises a second lower top die cavity, a second lower middle die cavity and a second lower bottom die cavity from top to bottom, the second lower top die cavity is used for forming a second upper rod body part of the second rod body part, the second lower middle die cavity is used for forming a second middle rod body part of the second rod body part, the second lower bottom die cavity is used for forming a second lower rod body part of the second rod body part, and a circular bulge for upsetting a circular recess for forming the end surface of the second lower rod body part is arranged at the bottom of the second lower bottom die cavity;
the second preform is upset by a third cold-heading die to form a third preform, the third cold-heading die comprises a third male die, a third female die and a third stretching punch rod, a third upper die cavity for upsetting a third head part forming the third preform is arranged in the third male die, and a third lower die cavity for upsetting a third rod body part forming the third preform is arranged in the third female die; the third stretching punch rod is used for increasing the recess depth of the circular recess on the end face of the second lower rod body part and forming a third blind hole in a third rod body part of a third preformed piece, and the top of the third stretching punch rod is matched with the shape of the circular recess on the end face of the second lower rod body part of the second preformed piece;
the third preform is upset by a fourth cold-heading die to form a fourth preform, the fourth cold-heading die comprises a fourth male die, a fourth female die and a fourth stretching punch rod, and a fourth upper die cavity for upsetting a fourth head part forming the fourth preform is formed in the fourth male die; a fourth lower die cavity for upsetting a fourth rod body forming a fourth preform is formed in the fourth female die; the fourth lower die cavity sequentially comprises a fourth lower top die cavity, a fourth lower middle die cavity and a fourth lower bottom die cavity which are communicated with each other from top to bottom, the fourth lower top die cavity is used for forming a fourth upper rod body part of the fourth rod body part, the fourth lower middle die cavity is used for forming a fourth middle rod body part of the fourth rod body part, the fourth lower bottom die cavity is used for forming a fourth lower rod body part of the fourth rod body part, and the outer diameter of the fourth lower rod body is smaller than that of the fourth middle rod body, a fourth transition part is formed between the fourth middle rod body and the fourth lower rod body, and the outer diameter of the fourth transition part is gradually reduced from the fourth middle rod body part to the fourth lower rod body part, the fourth stretching punch rod is used for increasing the depth of the third blind hole and forming a fourth blind hole in the fourth rod body part, the fourth blind holes are formed in the fourth middle rod body part and the fourth lower rod body part, and the inner diameters of all parts of the fourth blind holes are the same;
the fourth preformed piece is made into a hexagonal flange bolt pipe finished product through a fifth cold-heading die in a upsetting mode, the fifth cold-heading die comprises a fifth male die and a fifth female die, a fifth upper die cavity used for forming a fifth head of the fifth preformed piece in the upsetting mode is arranged in the fifth male die, a hexagonal boss used for a hexagonal blind hole in the end face of the fifth head is arranged at the top of the fifth upper die cavity, and the end portion of the hexagonal boss is matched with the hexagonal recess.
Further, the fourth stretching punch rod is matched with the fourth blind hole, the fourth stretching punch rod comprises a fourth upper rod body, a fourth middle rod body and a fourth lower rod body which are integrally formed, the outer diameters of the fourth upper rod body and the fourth lower rod body are the same, an annular mounting groove is formed around the fourth middle rod body outside the fourth middle rod body, and the annular mounting groove is positioned between the fourth upper rod body and the fourth lower rod body, the middle part of the annular mounting groove is fixedly sleeved with a heat-resistant ring, the heat-resisting ring can be accommodated in the space of a fourth blind hole surrounded by a fourth transition part, the upper part of the annular mounting groove is fixedly sleeved with an upper heat-conducting ring, the upper heat conduction ring can be accommodated in a space of a fourth blind hole surrounded by a part of the fourth middle rod body part close to the fourth transition part, the fixed cover in lower part of annular mounting groove is equipped with down the heat conduction ring, down the heat conduction ring enough hold in the fourth lower body of rod portion is close to the space of the fourth blind hole that the part of fourth transition portion encloses.
Furthermore, the hardness of the heat-resisting ring is greater than the hardness of the upper heat-conducting ring and the lower heat-conducting ring, the upper heat-conducting ring and the lower heat-conducting ring are both made of softenable materials, and the softening point of the upper heat-conducting ring is higher than that of the lower heat-conducting ring.
Furthermore, a fourth upper annular gap exists between the upper heat conduction ring and the fourth upper rod body, and an upper annular heat conduction pad is embedded in the fourth upper annular gap; a fourth lower annular gap exists between the lower heat conduction ring and the fourth lower rod body, and a lower annular heat conduction pad is embedded in the fourth lower annular gap.
Furthermore, the thicknesses of the heat-resisting ring, the upper heat-conducting ring and the lower heat-conducting ring are the same, and the inner ring parts of the heat-resisting ring, the upper heat-conducting ring and the lower heat-conducting ring are all tightly attached to the outer part of the fourth middle rod body.
Furthermore, the outer diameter of the fourth middle rod body is gradually reduced from the fourth upper rod body to the fourth lower rod body.
Compared with the prior art, the scheme has the beneficial effects that:
1. the size of the inner cavity of each cold heading die is designed in advance, so that the size precision of the processed and formed hexagonal flange bolt pipe is higher; the initial forging raw material is finally processed and formed into the finished product of the hexagon flange bolt pipe through five times of cold heading treatment, the processing efficiency is effectively improved, and the surface of the hexagon head of the finished product of the hexagon flange bolt pipe subjected to cold heading is flat.
2. The external diameter of the fourth middle rod body of the fourth tensile punching rod is gradually reduced from the fourth upper rod body to the fourth lower rod body, the fourth middle rod body is sleeved with a heat-resistant ring, the upper heat-conductive ring and the lower heat-conductive ring are mutually matched, the heat-resistant ring and the fourth transition part are mutually matched, the upper heat-conductive ring and the fourth middle rod body are mutually matched with the part close to the fourth transition part, the lower heat-conductive ring and the fourth lower rod body are mutually matched with the part close to the fourth transition part, the heat-resistant ring, the upper heat-conductive ring and the lower heat-conductive ring play a role in buffering in the process of forming the fourth blind hole, and the fourth tensile punching rod body and the fourth lower rod body are prevented from being broken in the process of forming the fourth blind hole.
3. Because the external diameter of barred body diminishes in proper order to the direction that the barred body belonged to down the fourth by the barred body on the fourth, and heat-resisting ring, go up the same and all hug closely with the barred body in the fourth of the thickness of heat-conducting ring and lower heat-conducting ring, consequently, the volume of heat-conducting ring is great relatively down, consequently, heat-conducting ring is faster at the tensile heat transfer of dashing the in-process that the stick formed the fourth blind hole of fourth down, can more effectually transmit heat to body of rod portion under the fourth, avoid breaking because of its stress that receives is too big.
Drawings
Fig. 1 is a schematic structural view of a first cold-heading die according to the present invention;
fig. 2 is a schematic structural view of a second cold-heading die according to the present invention;
fig. 3 is a schematic structural view of a third cold-heading die according to the present invention;
fig. 4 is a schematic structural view of a fourth cold-heading die according to the present invention;
fig. 5 is a schematic structural view of a fifth cold-heading die according to the present invention;
FIG. 6 is a schematic structural view of a fourth drawing punch in a fourth cold heading die;
fig. 7 is a flow chart of the forming of the hexagonal flange threaded pipe.
Reference numerals in the drawings of the specification include: a forging raw material 10, a first preformed piece 11, a second preformed piece 12, a third preformed piece 13, a fourth preformed piece 14, a hexagonal flange bolt tube finished product 15, a first male mould shell 21, a first die core 22, a first female mould shell 23, a first mould core 24, a second male mould shell 31, a second die core 32, a second female mould shell 33, a second mould core 34, a third male mould shell 41, a third die core 42, a third female mould shell 43 and a third mould core 44, a third stretching punch rod 45, a fourth male die shell 51, a fourth die core 52, a fourth female die shell 53, a fourth die core 54, a fourth stretching punch rod 55, a fourth upper rod 551, a fourth middle rod 552, a fourth lower rod 553, a heat-resisting ring 7, an upper heat-conducting ring 81, a lower heat-conducting ring 82, an upper annular heat-conducting pad 91, a lower annular heat-conducting pad 92, a fifth male die shell 61, a fifth die core 62, a fifth female die shell 63 and a fifth die core 64.
Detailed Description
The invention will be described in further detail by means of specific embodiments with reference to the accompanying drawings:
example (b):
the utility model provides a hexagonal flange screwed pipe mound system of processing, is shown as figure 1 to 5, including first cold-heading equipment, second cold-heading equipment, third cold-heading equipment, fourth cold-heading equipment and fifth cold-heading equipment, first cold-heading equipment includes first cold-heading mould, and second cold-heading equipment includes the second cold-heading mould, and third cold-heading equipment includes the third cold-heading mould, and fourth cold-heading equipment includes the fourth cold-heading mould, and fifth cold-heading equipment includes the fifth cold-heading mould.
The forging raw material 10 is upset by a first cold-heading die to form a first preform 11, as shown in fig. 1, the first cold-heading die comprises a first male die and a first female die which are matched with each other, the first male die comprises a first male die shell 21 and a first die core 22 accommodated in the first male die shell 21, and a first upper die cavity for forming a first head part of the first preform 11 is arranged in the first die core 22; the first female die comprises a first female die shell 23 and a first die core 24 accommodated in the first female die shell 23, a first lower die cavity for forming a first rod part of the first preformed piece 11 is formed in the first die core 24, the first lower die cavity sequentially comprises a first lower top die cavity, a first lower middle die cavity and a first lower bottom die cavity which are communicated with each other from top to bottom, the first lower top die cavity is used for forming a first upper rod part of the first rod part, the first lower middle die cavity is used for forming a first middle rod part of the first rod part, and the first lower bottom die cavity is used for forming a first lower rod part of the first rod part.
The first preform 11 is upset into a second preform 12 by a second cold-heading die, as shown in fig. 2, the second cold-heading die comprises a second male die and a second female die which are matched with each other, the second male die comprises a second male die shell 31 and a second die core 32 accommodated in the second male die shell 31, a second upper die cavity for upsetting a second head part forming the second preform 12 is arranged in the second die core 32, the second upper die cavity comprises a second upper top die cavity and a second upper bottom die cavity, the second upper top die cavity is used for upsetting a second upper head part forming the second head part, and the top of the second upper top die cavity is provided with a hexagonal protrusion for upsetting a hexagonal recess forming the end face of the second upper head part; the second upper bottom die cavity is used for upsetting a second lower head part forming a second head part, and the second lower head part is a flange part of the second head part;
the second female mold comprises a second female mold shell 33 and a second mold core 34 accommodated in the second female mold shell 33, a second lower mold cavity for upsetting a second rod portion forming the second preform 12 is formed in the second mold core 34; the second lower die cavity sequentially comprises a second lower top die cavity, a second lower middle die cavity and a second lower bottom die cavity from top to bottom, the second lower top die cavity is used for forming a second upper rod body part of the second rod body part, the second lower middle die cavity is used for forming a second middle rod body part of the second rod body part, the second lower bottom die cavity is used for forming a second lower rod body part of the second rod body part, and a circular bulge for upsetting a circular recess for forming the end surface of the second lower rod body part is arranged at the bottom of the second lower bottom die cavity;
the second preform 12 is upset by a third cold-heading die to form a third preform 13, as shown in fig. 3, the third cold-heading die comprises a third male die, a third female die and a third stretching punch 45, the third male die comprises a third male die shell 41 and a third die core 42 accommodated in the third male die shell 41, and a third upper die cavity for upsetting a third head of the third preform 13 is formed in the third die core 42; the third female die comprises a third female die shell 43 and a third die core 44 accommodated in the third female die shell 43, and a third lower die cavity for upsetting a third rod part forming the third preform 13 is formed in the third die core 44; the third stretching punch 45 is used to increase the depth of the recess of the circular recess of the end face of the second lower rod body portion and form a third blind hole in the third rod body portion of the third preform 13, and the top of the third stretching punch 45 is adapted to the shape of the circular recess of the end face of the second lower rod body portion of the second preform 12.
The third preform 13 is upset by a fourth cold-heading die to form a fourth preform 14, as shown in fig. 4, the fourth cold-heading die comprises a fourth male die, a fourth female die and a fourth stretching punch 55, the fourth male die comprises a fourth male die shell 51 and a fourth die core 52 accommodated in the fourth male die shell 51, and a fourth upper die cavity for upsetting a fourth head of the fourth preform 14 is formed in the fourth die core 52; the fourth female die comprises a fourth female die shell 53 and a fourth die core 54 accommodated in the fourth female die shell 53, and a fourth lower die cavity for upsetting a fourth rod body forming the fourth preform 14 is formed in the fourth die core 54; the fourth lower die cavity sequentially comprises a fourth lower top die cavity, a fourth lower middle die cavity and a fourth lower bottom die cavity from top to bottom, the fourth lower top die cavity is used for forming a fourth upper rod body part of the fourth rod body part, the fourth lower middle die cavity is used for forming a fourth middle rod body part of the fourth rod body part, the fourth lower bottom die cavity is used for forming a fourth lower rod body part of the fourth rod body part, the outer diameter of the fourth lower rod body is smaller than that of the fourth middle rod body part, a fourth transition part is formed between the fourth middle rod body part and the fourth lower rod body part, and the outer diameter of the fourth transition part is gradually reduced from the fourth middle rod body part to the direction of the fourth lower rod body part;
the fourth stretching punch 55 is used for increasing the depth of the third blind hole and forming a fourth blind hole in the fourth rod body part, the fourth blind hole is formed in the fourth middle rod body part and the fourth lower rod body part, and the inner diameters of all parts of the fourth blind hole are the same; the fourth drawing punch 55 is adapted to the fourth blind hole. As shown in fig. 6, the fourth drawing punch 55 includes a fourth upper rod 551, a fourth middle rod 552 and a fourth lower rod 553 which are integrally formed, the fourth upper rod 551 and the fourth lower rod 553 have the same outer diameter, and the outer diameter of the fourth middle rod 552 is gradually reduced from the fourth upper rod 551 toward the fourth lower rod 553.
An annular mounting groove is formed outside the fourth middle rod body 552 around the fourth middle rod body 552 and is located between the fourth upper rod body 551 and the fourth lower rod body 553, a heat-resistant ring 7 is fixedly sleeved in the middle of the annular mounting groove, the heat-resistant ring 7 can be accommodated in a space of a fourth blind hole surrounded by a fourth transition portion, an upper heat-conducting ring 81 is fixedly sleeved on the upper portion of the annular mounting groove, a fourth upper annular gap exists between the upper heat-conducting ring 81 and the fourth upper rod body 551, an upper annular heat-conducting pad 91 is embedded in the fourth upper annular gap, and the upper heat-conducting ring 81 can be accommodated in a space of the fourth blind hole surrounded by a part of the fourth middle rod body close to the fourth transition portion; the fixed cover in lower part of annular mounting groove is equipped with down heat conduction ring 82, has annular clearance under the fourth between lower heat conduction ring 82 and the fourth lower rod 553, and annular heat conduction pad 92 has been inlayed to annular clearance endotheca under the fourth, and lower heat conduction ring 82 can hold in the fourth lower rod body portion is close to in the space of the fourth blind hole that the part of fourth transition portion encloses. The thicknesses of the heat-resisting ring 7, the upper heat-conducting ring 81 and the lower heat-conducting ring 82 are the same, and the inner ring parts of the heat-resisting ring 7, the upper heat-conducting ring 81 and the lower heat-conducting ring 82 are all tightly attached to the outer part of the fourth middle rod 552; the hardness of the heat-resistant ring 7 is greater than the hardness of the upper heat-conducting ring 81 and the lower heat-conducting ring 82, the upper heat-conducting ring 81 and the lower heat-conducting ring 82 are both made of a softenable material, and the softening point of the upper heat-conducting ring 81 is higher than that of the lower heat-conducting ring 82.
The fourth preformed piece 14 is upset into a finished hexagonal flanged bolt tube 15 by a fifth cold-heading die, as shown in fig. 5, the fifth cold-heading die comprises a fifth male die and a fifth female die, the fifth male die comprises a fifth male die shell 61 and a fifth die core 62 accommodated in the fifth male die shell 61, a fifth upper die cavity for upsetting a fifth head of the fifth preformed piece is formed in the fifth die core 62, a hexagonal boss for a hexagonal blind hole of the end face of the fifth head is formed at the top of the fifth upper die cavity, and the end of the hexagonal boss is matched with the hexagonal recess; the fifth female die comprises a fifth female die shell 63 and a fifth die core 64 accommodated in the fifth female die shell 63, and a fifth lower die cavity for accommodating the rod body part of the hexagon flange bolt tube finished product 15 is formed in the fifth die core 64.
The specific implementation method comprises the following steps:
and S1, cutting the material, namely selecting the forging raw material 10 as a 35CrMo blank, spheroidizing, annealing, pickling and drawing the 35CrMo blank into the forging raw material 10 required in the process step in sequence, and cutting the cylindrical forging raw material 10 with a proper size according to the required size.
And S2, performing primary cold heading, namely, upsetting the forging raw material 10 into a first preformed piece 11 by using a first cold heading die, wherein the first preformed piece 11 comprises a first head part and a first rod body part which are integrally formed, the first rod body part comprises a first upper rod body part, a first middle rod body part and a first lower rod body part which are integrally formed, the first head part is transited to the first middle rod body part through the first upper rod body part, the outer diameter of the first upper rod body part is gradually reduced from the first head part to the first middle rod body part, and the first lower rod body part is in a circular inverted angle shape.
S3, performing secondary cold heading, namely, upsetting the first preformed piece 11 into a second preformed piece 12 by using a second die, wherein the second preformed piece 12 comprises a second head part and a second rod body part which are integrally formed, the second head part comprises a second upper head part and a second lower head part which are integrally formed, the cross section of the second upper head part is hexagonal, a hexagonal recess is formed in the end face of the second upper head part, and the second lower head part is a circular flange part; the second body of rod portion includes integrated into one piece's second upper rod body portion, body portion and second lower rod body portion in the second, and body portion is cylindricly in the second, and body portion includes the second transition portion of the excessive round platform form in body portion place direction under to the second in the second, and the external diameter of body portion is greater than the external diameter of body portion under the second in the second, and the terminal surface of body portion is formed with circular recess under the second.
And S4, performing cold heading for the third time, namely, upsetting the second preformed piece 12 into a third preformed piece 13 by using a third die, wherein the third preformed piece 13 comprises a third head part and a third rod body part which are integrally formed, the shape of the third head part is the same as that of the second head part, the third rod body part comprises a third upper rod body part, a third middle rod body part and a third lower rod body part which are integrally formed, the third upper rod body part is cylindrical, the third middle rod body part comprises a third transition part which is in a truncated cone shape and transits to the direction of the third lower rod body part, the outer diameter of the third middle rod body part is larger than that of the third lower rod body part, and a third blind hole is formed in the third rod body part and is positioned in the third lower rod body part and the third transition part.
S5, a fourth cold heading step, namely, utilizing a fourth die to pier the first preformed piece 11 into a fourth preformed piece 14, wherein the fourth preformed piece 14 comprises a fourth head part and a fourth rod body part which are integrally formed, the shape of the fourth head part is the same as that of the third head part, the fourth rod body part comprises a fourth upper rod body part, a fourth middle rod body part and a fourth lower rod body part which are integrally formed, the fourth upper rod body part is cylindrical, the outer diameter of the fourth upper rod body part is larger than that of the third upper rod body part, the fourth middle rod body part comprises a fourth transition part which is in a truncated cone shape and is in transition towards the direction of the fourth lower rod body part, the outer diameter of the fourth middle rod body part is larger than that of the fourth lower rod body part, and the length ratio of the fourth middle rod body part to the fourth lower rod body part is 1: 1.41; the ratio of the outer diameters of the fourth middle rod body part and the fourth lower rod body part is 1: 0.98; and a fourth blind hole is formed in the fourth rod body part and is positioned in the fourth lower rod body part and the fourth middle rod body part, the inner diameters of all parts of the fourth blind hole are the same, the inner diameter of the fourth blind hole is smaller than that of the third blind hole, and the inner diameter of the fourth blind hole is reduced by 0.52 percent than that of the third blind hole.
And S6, performing a fifth cold heading step, namely, utilizing a fifth cold heading die to pier the fourth preformed piece 14 into a hexagonal flange bolt tube finished product 15, wherein the hexagonal flange bolt tube finished product 15 comprises a finished product head part and a finished product rod body part which are integrally formed, the finished product head part comprises an integrally formed finished product upper head part and a finished product lower head part, a hexagonal blind hole is formed in the end face of the finished product upper head part, the finished product lower head part is a circular flange part, and the shape of the finished product rod body part is the same as that of the fourth rod body part.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. The utility model provides a hexagonal flange screwed pipe mound system of processing, includes first cold-heading equipment, second cold-heading equipment, third cold-heading equipment, fourth cold-heading equipment and fifth cold-heading equipment, its characterized in that:
the first cold heading equipment comprises a first cold heading die, the second cold heading equipment comprises a second cold heading die, the third cold heading equipment comprises a third cold heading die, the fourth cold heading equipment comprises a fourth cold heading die, and the fifth cold heading equipment comprises a fifth cold heading die;
forging the forging stock into a first preform through a first cold-heading die, wherein the first cold-heading die comprises a first male die and a first female die which are matched with each other, and a first upper die cavity for forming a first head part of the first preform is formed in the first male die; a first lower die cavity for forming a first rod body part of a first preform is formed in the first female die, the first lower die cavity sequentially comprises a first lower top die cavity, a first lower middle die cavity and a first lower bottom die cavity from top to bottom, the first lower top die cavity is used for forming a first upper rod body part of the first rod body part, the first lower middle die cavity is used for forming a first middle rod body part of the first rod body part, and the first lower bottom die cavity is used for forming a first lower rod body part of the first rod body part;
the first preform is upset into a second preform through a second cold-heading die, the second cold-heading die comprises a second male die and a second female die which are matched with each other, a second upper die cavity for upsetting a second head part forming the second preform is arranged in the second male die, the second upper die cavity comprises a second upper top die cavity and a second upper bottom die cavity, the second upper top die cavity is used for upsetting a second upper head part forming the second head part, and a hexagonal bulge for upsetting a hexagonal recess forming the end surface of the second upper head part is arranged at the top of the second upper top die cavity; the second upper bottom die cavity is used for upsetting a second lower head part forming a second head part, and the second lower head part is a flange part of the second head part; a second lower die cavity for upsetting a second rod body part forming a second preform is formed in the second female die; the second lower die cavity sequentially comprises a second lower top die cavity, a second lower middle die cavity and a second lower bottom die cavity from top to bottom, the second lower top die cavity is used for forming a second upper rod body part of the second rod body part, the second lower middle die cavity is used for forming a second middle rod body part of the second rod body part, the second lower bottom die cavity is used for forming a second lower rod body part of the second rod body part, and a circular bulge for upsetting a circular recess for forming the end surface of the second lower rod body part is arranged at the bottom of the second lower bottom die cavity;
the second preform is upset by a third cold-heading die to form a third preform, the third cold-heading die comprises a third male die, a third female die and a third stretching punch rod, a third upper die cavity for upsetting a third head part forming the third preform is arranged in the third male die, and a third lower die cavity for upsetting a third rod body part forming the third preform is arranged in the third female die; the third stretching punch rod is used for increasing the recess depth of the circular recess on the end face of the second lower rod body part and forming a third blind hole in a third rod body part of a third preformed piece, and the top of the third stretching punch rod is matched with the shape of the circular recess on the end face of the second lower rod body part of the second preformed piece;
the third preform is upset by a fourth cold-heading die to form a fourth preform, the fourth cold-heading die comprises a fourth male die, a fourth female die and a fourth stretching punch rod, and a fourth upper die cavity for upsetting a fourth head part forming the fourth preform is formed in the fourth male die; a fourth lower die cavity for upsetting a fourth rod body forming a fourth preform is formed in the fourth female die; the fourth lower die cavity sequentially comprises a fourth lower top die cavity, a fourth lower middle die cavity and a fourth lower bottom die cavity which are communicated with each other from top to bottom, the fourth lower top die cavity is used for forming a fourth upper rod body part of the fourth rod body part, the fourth lower middle die cavity is used for forming a fourth middle rod body part of the fourth rod body part, the fourth lower bottom die cavity is used for forming a fourth lower rod body part of the fourth rod body part, and the outer diameter of the fourth lower rod body is smaller than that of the fourth middle rod body, a fourth transition part is formed between the fourth middle rod body and the fourth lower rod body, and the outer diameter of the fourth transition part is gradually reduced from the fourth middle rod body part to the fourth lower rod body part, the fourth stretching punch rod is used for increasing the depth of the third blind hole and forming a fourth blind hole in the fourth rod body part, the fourth blind holes are formed in the fourth middle rod body part and the fourth lower rod body part, and the inner diameters of all parts of the fourth blind holes are the same;
the fourth preformed piece is made into a hexagonal flange bolt pipe finished product through a fifth cold-heading die in a upsetting mode, the fifth cold-heading die comprises a fifth male die and a fifth female die, a fifth upper die cavity used for forming a fifth head of the fifth preformed piece in the upsetting mode is arranged in the fifth male die, a hexagonal boss used for a hexagonal blind hole in the end face of the fifth head is arranged at the top of the fifth upper die cavity, and the end portion of the hexagonal boss is matched with the hexagonal recess.
2. The hexagonal flange threaded pipe upsetting processing system as recited in claim 1, wherein: the fourth stretching punch rod is matched with the fourth blind hole, the fourth stretching punch rod comprises a fourth upper rod body, a fourth middle rod body and a fourth lower rod body which are integrally formed, the outer diameters of the fourth upper rod body and the fourth lower rod body are the same, an annular mounting groove is formed around the fourth middle rod body outside the fourth middle rod body, and the annular mounting groove is positioned between the fourth upper rod body and the fourth lower rod body, the middle part of the annular mounting groove is fixedly sleeved with a heat-resistant ring, the heat-resisting ring can be accommodated in the space of a fourth blind hole surrounded by a fourth transition part, the upper part of the annular mounting groove is fixedly sleeved with an upper heat-conducting ring, the upper heat conduction ring can be accommodated in a space of a fourth blind hole surrounded by a part of the fourth middle rod body part close to the fourth transition part, the fixed cover in lower part of annular mounting groove is equipped with down the heat conduction ring, down the heat conduction ring enough hold in the fourth lower body of rod portion is close to the space of the fourth blind hole that the part of fourth transition portion encloses.
3. The hexagonal flange threaded pipe upsetting processing system as recited in claim 2, wherein: the hardness of the heat-resisting ring is greater than that of the upper heat-conducting ring and the lower heat-conducting ring, the upper heat-conducting ring and the lower heat-conducting ring are both made of materials capable of being softened, and the softening point of the upper heat-conducting ring is higher than that of the lower heat-conducting ring.
4. The hexagonal flange threaded pipe upsetting processing system as recited in claim 3, wherein: a fourth upper annular gap is formed between the upper heat conduction ring and the fourth upper rod body, and an upper annular heat conduction pad is embedded in the fourth upper annular gap; a fourth lower annular gap exists between the lower heat conduction ring and the fourth lower rod body, and a lower annular heat conduction pad is embedded in the fourth lower annular gap.
5. The hexagonal flange threaded pipe upsetting processing system as recited in claim 4, wherein: the heat-resisting ring, the upper heat-conducting ring and the lower heat-conducting ring are the same in thickness, and the inner ring parts of the heat-resisting ring, the upper heat-conducting ring and the lower heat-conducting ring are all tightly attached to the outer part of the fourth middle rod body.
6. The hexagonal flange threaded pipe upsetting processing system as recited in claim 5, wherein: the outer diameter of the fourth middle rod body is gradually reduced from the fourth upper rod body to the fourth lower rod body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021676307.0U CN212495170U (en) | 2020-08-12 | 2020-08-12 | Hexagonal flange screwed pipe mound system of processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021676307.0U CN212495170U (en) | 2020-08-12 | 2020-08-12 | Hexagonal flange screwed pipe mound system of processing |
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| Publication Number | Publication Date |
|---|---|
| CN212495170U true CN212495170U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021676307.0U Active CN212495170U (en) | 2020-08-12 | 2020-08-12 | Hexagonal flange screwed pipe mound system of processing |
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| Country | Link |
|---|---|
| CN (1) | CN212495170U (en) |
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2020
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