CN113070438A - Thickening die and thickening method for drill rod in double-arm drill rod - Google Patents
Thickening die and thickening method for drill rod in double-arm drill rod Download PDFInfo
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- CN113070438A CN113070438A CN202110340105.1A CN202110340105A CN113070438A CN 113070438 A CN113070438 A CN 113070438A CN 202110340105 A CN202110340105 A CN 202110340105A CN 113070438 A CN113070438 A CN 113070438A
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- 230000008719 thickening Effects 0.000 title claims abstract description 252
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 44
- 230000006835 compression Effects 0.000 claims description 65
- 238000007906 compression Methods 0.000 claims description 65
- 230000007704 transition Effects 0.000 claims description 56
- 239000011265 semifinished product Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 15
- 238000007493 shaping process Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 abstract description 10
- 210000001503 joint Anatomy 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000009721 upset forging Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K5/00—Making tools or tool parts, e.g. pliers
- B21K5/02—Making tools or tool parts, e.g. pliers drilling-tools or other for making or working on holes
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Abstract
The invention relates to the field of thickening of drill rods in double-arm drill rods, in particular to a thickening die and a thickening method for drill rods in double-arm drill rods. The die comprises a die body, wherein the die body is provided with an upper die and a lower die, grooves are formed in the relative positions of the lower surface of the upper die and the upper surface of the lower die, and the grooves of the upper die and the grooves of the lower die are in butt joint to form a forming cavity. One end of the molding cavity is a clamping die section. The forming cavity is sequentially divided into a small-end thickening die and a large-end thickening die from one end close to the clamping die section to the other end. The thickening method comprises the steps of firstly placing one end of a raw material into the thickening die to perform small-end upsetting thickening, and then placing the other end of the raw material into the thickening die to perform large-end upsetting thickening. The thickening die and the thickening method have the advantages of low cost, high working efficiency and less consumed raw materials.
Description
Technical Field
The invention relates to the field of thickening of drill rods in double-arm drill rods, in particular to a thickening die and a thickening method for drill rods in double-arm drill rods.
Background
The double-arm drill rod comprises an outer drill rod, an inner drill rod, a hexagonal sleeve, a spring cylindrical pin and the like. The inner drill rod is an indispensable component of the double-arm drill rod. The inner drill rod of the double-arm drill rod is made of raw materials through the steps of thickening and the like.
At present, a traditional thickening die of a drill rod in a double-arm drill rod is divided into a large-end thickening die and a small-end thickening die, and the large-end thickening die and the small-end thickening die are completely independent. The thickening method comprises the steps of firstly thickening one end of the raw material by using a small end thickening die, then detaching the small end thickening die, installing a large end thickening die, and then thickening the other end of the raw material. The traditional thickening die of the drill rod in the double-arm drill rod needs two independent dies, the number of the needed dies is large, and the cost is high. Moreover, the die needs to be disassembled and assembled in the thickening process, so that the time required in the whole thickening process is long, and the working efficiency is low. In addition, the traditional thickening die only thickens one end of a raw material pipe material, a forming step is omitted, the thickened large end of a semi-finished product needs to be close to the shape of the product through subsequent cutting scraps, the consumed raw materials are more, the time consumed by the subsequent cutting scraps is longer, and the working efficiency is further reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a thickening die and a thickening method for a drill rod in a double-arm drill rod.
In order to solve the problems, the following technical scheme is provided:
the thickening die for the drill rod in the double-arm drill rod comprises a die body, wherein the die body is provided with an upper die and a lower die, grooves are formed in the opposite positions of the lower surface of the upper die and the upper surface of the lower die, and the grooves of the upper die and the grooves of the lower die are butted to form a forming cavity. One end of the molding cavity is a clamping die section. The forming cavity is sequentially divided into a small-end thickening die and a large-end thickening die from one end close to the clamping die section to the other end. The tip thickened die is divided into a tip forming transition section, a tip thickened section and a tip compression section from one end close to the clamping die section to the other end in sequence, the inner diameter of the tip thickened section is larger than that of the tip forming transition section and the tip compression section, and the tip thickened section and the tip forming transition section and the tip compression section are in inclined surface transition. Big end thickening mould divide into main aspects thickening shaping section, main aspects thickening section, main aspects compression section and location section from the one end that is close to tip compression section in proper order to the other end, and the internal diameter of main aspects thickening shaping section is greater than the internal diameter of tip compression section and main aspects thickening section, and all is the inclined plane transition between main aspects thickening shaping section and tip compression section, main aspects thickening shaping section and the main aspects thickening section.
The inner diameter of the clamping die section is smaller than that of the small end forming transition section, the inner diameter of the small end forming transition section is equal to that of the small end compression amount section, the inner diameter of the small end compression amount section is smaller than that of the large end thickening section, and the inner diameter of the large end thickening section is equal to that of the large end compression amount section and that of the positioning section.
And a clamping forming transition section is arranged between the clamping die section and the small end forming transition section, and the inner diameter of the clamping forming transition section is larger than that of the small end forming transition section.
The thickening method of the drill rod in the double-arm drill rod is characterized by comprising the following steps:
first, preparation before thickening
Calculating and selecting pipe materials with corresponding sizes as raw materials according to the sizes of the drill rod blanks in the double-arm drill rod to be prepared; simultaneously, selecting a thickening die of the drill rod in the double-arm drill rod to ensure that the size of a forming cavity of the thickening die is consistent with the size of a blank of the drill rod in the double-arm drill rod to be prepared;
second, thickening the small end
Firstly, heating one end of a pipe material to 1200-1250 ℃;
then, an upper die and a lower die of the thickening die are separated, and raw materials are placed between the upper die and the lower die from a clamping die section of the thickening die, so that one end of the raw materials is positioned in an inclined plane transition area of a small-end compression amount section and a large-end thickening forming section of the thickening die;
then, an upper die and a lower die of the thickening die are closed, and a clamping die section of the thickening die clamps and fixes the raw material;
then, a small end punch is extended into the thickening die from the outer end of the thickening die positioning section, the raw material is upset forged, and one end of the raw material positioned in the thickening die is upset forged to an inclined plane transition region of the small end compression amount section and the small end thickening section from an inclined plane transition region of the small end compression amount section and the large end thickening forming section;
finally, an upper die and a lower die of the thickening die are separated, and a semi-finished product with thickened small ends is taken out;
thirdly, thickening the big end
Firstly, heating the other end of the pipe material to 1200-1250 ℃;
then, an upper die and a lower die of the thickening die are separated, and one end of the semi-finished product which is far away from the small end and is thickened is placed between the upper die and the lower die from the thickening die clamping die section, so that the end of the semi-finished product is located at the connecting position of the large end compression amount section and the positioning section of the thickening die;
then, an upper die and a lower die of the thickening die are closed, and a clamping die section of the thickening die clamps and fixes the semi-finished product;
then, extending a large-end punch into the thickening die from the outer end of the positioning section of the thickening die, upsetting the raw material, and upsetting one end of the raw material positioned in the thickening die from the joint of the large-end compression amount section and the positioning section to the joint of the large-end compression amount section and the large-end thickening section;
and finally, separating the upper die and the lower die of the thickening die to take out the drill rod blank in the double-arm drill rod with the thickened large end and the thickened small end.
By adopting the scheme, the method has the following advantages:
the thickening mold and the thickening method for the drill rod in the double-arm drill rod are characterized in that a molding cavity of the thickening mold is sequentially divided into a small end thickening mold and a large end thickening mold from one end close to a clamping mold section to the other end, the small end thickening mold is sequentially divided into a small end molding transition section, a small end thickening section and a small end compression amount section from one end close to the clamping mold section to the other end, the inner diameter of the small end thickening section is larger than that of the small end molding transition section and that of the small end compression amount section, the small end thickening section and the small end compression amount section are in inclined surface transition, the large end thickening mold is sequentially divided into a large end thickening molding section, a large end thickening section, a large end compression amount section and a positioning section from one end close to the small end compression amount section to the other end, the inner diameter of the large end thickening section is larger than that of the small end compression amount section and that of the large end thickening section and that of the small end compression amount section are, The large end thickening molding section and the large end thickening section are in inclined transition. The thickening method comprises the steps of firstly placing one end of a raw material into the thickening die to perform small-end upsetting thickening, and then placing the other end of the raw material into the thickening die to perform large-end upsetting thickening. The large and small end thickening dies of the thickening die are staggered in the same auxiliary die, and the thickening work at two ends can be completed by adopting one auxiliary die, so that fewer dies are needed, and the die cost is lower. Moreover, the thickening of the two ends can be completed by adopting one set of die, so that the die does not need to be disassembled and assembled in the thickening process, the non-production time of disassembling and assembling the die is eliminated, and the working efficiency of thickening is improved. Meanwhile, the thickened blank large end can be closer to the shape of a product by thickening the large end and forming the section, so that cutting chips are not needed, the working time of cutting and machining is reduced, and the working efficiency is further improved.
Drawings
FIG. 1 is a schematic structural view of a thickening mold for a drill rod in a dual arm drill rod of the present invention;
FIG. 2 is a dimensional view of a drill rod blank in the AT30 embodiment;
FIG. 3 is a dimension chart of the tube stock in the example;
FIG. 4 is a dimensional view of a thickening die in an embodiment;
FIG. 5 is a diagram showing the positioning dimensions of the thickening mold and the pipe material when the small end is thickened in the embodiment;
FIG. 6 is a heated dimension diagram of a thickening die when the small end is thickened in the embodiment;
FIG. 7 is a dimensional view of a small end punch in the embodiment;
FIG. 8 is a drawing showing the dimensions of the tube material after upset forging by the small end punch when the small end is thickened in the example;
FIG. 9 is a dimension chart of half cost after thickening of the small end in the embodiment;
FIG. 10 is a diagram showing the positioning dimensions of the thickening mold and the semi-finished product when the large end is thickened in the embodiment;
FIG. 11 is a heated dimension diagram of a thickening die when the large end is thickened in the embodiment;
FIG. 12 is a dimensional view of a large end punch of the embodiment;
FIG. 13 is a drawing showing the dimension of the blank after upsetting of the large end punch when the large end is thickened in the embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the thickening die for the drill rod in the double-arm drill rod comprises a die body, wherein the die body is provided with an upper die 1 and a lower die 2, grooves are formed in the opposite positions of the lower surface of the upper die 1 and the upper surface of the lower die 2, and the grooves of the upper die 1 are butted with the grooves of the lower die 2 to form a forming cavity. One end of the molding cavity is a clamping mold section A. The molding cavity is sequentially divided into a small-end thickening mold and a large-end thickening mold from one end close to the clamping mold section A to the other end. The tip thickened die is divided into a tip forming transition section C, a tip thickened section D and a tip compression amount section E from one end close to the clamping die section A to the other end in sequence, the inner diameter of the tip thickened section D is larger than that of the tip forming transition section C and the tip compression amount section E, and inclined surface transition is formed between the tip thickened section D and the tip forming transition section C and between the tip thickened section D and the tip compression amount section E. Big end thickening mould divide into big end thickening shaping section F, big end thickening section G, big end compression section H and location section K from the one end that is close to tip compression section E to the other end in proper order, and the internal diameter of big end thickening shaping section F is greater than the internal diameter of tip compression section E and big end thickening section G, and all is the inclined plane transition between big end thickening shaping section F and tip compression section E, big end thickening shaping section F and big end thickening section G. The inner diameter of the clamping die section A is smaller than that of the small end forming transition section C, the inner diameter of the small end forming transition section C is equal to that of the small end compression amount section E, the inner diameter of the small end compression amount section E is smaller than that of the large end thickening section G, and the inner diameter of the large end thickening section G is equal to that of the large end compression amount section H and that of the positioning section K. And a clamping forming transition section B is arranged between the clamping die section A and the small end forming transition section C, and the inner diameter of the clamping forming transition section B is larger than that of the small end forming transition section C.
The thickening method of the drill rod in the double-arm drill rod comprises the following steps:
first, preparation before thickening
Calculating and selecting pipe materials with corresponding sizes as raw materials according to the sizes of the drill rod blanks in the double-arm drill rod to be prepared; and simultaneously, selecting a thickening die of the drill rod in the double-arm drill rod to ensure that the size of a forming cavity of the thickening die is consistent with the size of a blank of the drill rod in the double-arm drill rod to be prepared.
Second, thickening the small end
Firstly, one end of a pipe material is heated to 1200-1250 ℃.
Then, an upper die 1 and a lower die 2 of the thickening die are separated, raw materials are placed between the upper die 1 and the lower die 2 from a clamping die section A of the thickening die, and one end of the raw materials is located in an inclined plane transition area of a small-end compression amount section E and a large-end thickening forming section F of the thickening die.
And then, closing the upper die 1 and the lower die 2 of the thickening die, and clamping and fixing the raw material by using a clamping die section A of the thickening die.
And then, extending the small-end punch head into the thickening die from the outer end of the positioning section K of the thickening die, upsetting the raw material, and upsetting one end of the raw material positioned in the thickening die from the inclined plane transition area of the small-end compression amount section E and the large-end thickening forming section F to the inclined plane transition area of the small-end compression amount section E and the small-end thickening section D.
And finally, separating the upper die 1 and the lower die 2 of the thickening die, and taking out the semi-finished product with the thickened small end.
Thirdly, thickening the big end
Firstly, heating the other end of the tube material to 1200-1250 ℃.
Then, an upper die 1 and a lower die 2 of the thickening die are separated, one end of the semi-finished product which is far away from the small end and is thickened is placed between the upper die 1 and the lower die 2 from a clamping die section A of the thickening die, and the end of the semi-finished product is located at the connecting position of a large-end compression volume section H and a positioning section K of the thickening die.
And then, closing the upper die 1 and the lower die 2 of the thickening die, and clamping and fixing the semi-finished product by using the clamping die section A of the thickening die.
And then, extending the large-end punch from the outer end of the positioning section K of the thickening die into the thickening die, upsetting the raw material, and upsetting one end of the raw material positioned in the thickening die from the joint of the large-end compression section H and the positioning section K to the joint of the large-end compression section H and the large-end thickening section G.
And finally, separating the upper die 1 and the lower die 2 of the thickening die to take out the drill rod blank in the double-arm drill rod with the thickened large end and the thickened small end.
Examples
Taking the blank of the drill rod in the AT30 as an example, the invention is processed by using the thickening die and the thickening method of the drill rod in the double-arm drill rod, and the concrete steps are as follows:
first, preparation before thickening
The size of the drill rod blank in the AT30 is shown in FIG. 2, and a pipe material with the corresponding size is calculated and selected as a raw material according to the size of the drill rod blank in the AT30, wherein the length of the pipe material is 3102mm, and the outer diameter of the pipe material is 25.32mm, as shown in FIG. 3. Simultaneously, selecting a thickening die of the drill rod in the double-arm drill rod to ensure that the size of a forming cavity of the thickening die is consistent with the size of a blank of the drill rod in the double-arm drill rod to be prepared, wherein the length of a clamping die section A in the thickening die is 151.5mm, and the inner diameter of the clamping die section A is 24.5 mm; the length of the clamping and forming transition section B is 5mm, and the inner diameter is 34.5 mm; the length of the small end forming transition section C is 30mm, and the inner diameter is 25.87 mm; the length of the small end thickened section D is 57.1mm, and the inner diameter is 36.23 mm; the length of the bevel transition area of the small end thickening section D and the small end forming transition section C is 41.1 mm; the length of the small end compression section E is 75mm, and the inner diameter is 25.87 mm; the length of the transition region between the small end thickening section D and the small end compression amount section E is 10 mm; the length of the large-end thickened forming section F is 8.31mm, and the inner diameter is 44.09 mm; the length of the inclined plane transition area of the small end compression section E and the large end thickening forming section F is 28.03 mm; the length of the large-end thickened section G is 94.1mm, and the inner diameter is 36.23 mm; the length of the inclined plane transition area of the large end thickening molding section F and the large end thickening section G is 14.68 mm; the length of the large-end compression amount section H is 155mm, and the inner diameter is 36.23 mm; the length of the positioning section K is 30mm, and the inner diameter of the positioning section K is 36.23 mm; the overall length of the die was 700mm as shown in figure 4.
Second, thickening the small end
First, one end of the tube was heated to 1250 ℃ for a length of 210.5mm, as shown in FIG. 5.
Then, an upper die 1 and a lower die 2 of the thickening die are separated, raw materials are placed between the upper die 1 and the lower die 2 from a clamping die section A of the thickening die, and one end of the raw materials is located in an inclined plane transition area of a small-end compression amount section E and a large-end thickening forming section F of the thickening die.
Next, the upper die 1 and the lower die 2 of the thickening die were closed, and the clamping die segment a of the thickening die clamped and fixed the raw material at a positioning distance of 323mm as shown in fig. 6.
Then, after the small end thickening die of the thickening die is heated, the small end punch is stretched into the thickening die from the outer end of the thickening die positioning section K, upsetting is carried out on raw materials, and one end of the raw materials located in the thickening die is upset forged to the inclined plane transition region of the small end compression section E and the small end thickening section D from the inclined plane transition region of the small end compression section E and the large end thickening forming section F. The small end punch dimensions are shown in fig. 7. The reduction of the tube stock was 82mm as shown in FIG. 8.
Finally, the upper die 1 and the lower die 2 of the thickening die are separated, and the semi-finished product with thickened small end is taken out, wherein the size is shown in fig. 9.
Thirdly, thickening the big end
First, the other end of the tube was heated to 1250 ℃ for a length of 330mm as shown in FIG. 10.
Then, an upper die 1 and a lower die 2 of the thickening die are separated, one end of the semi-finished product which is far away from the small end and is thickened is placed between the upper die 1 and the lower die 2 from a clamping die section A of the thickening die, and the end of the semi-finished product is located at the connecting position of a large-end compression volume section H and a positioning section K of the thickening die.
Then, the upper die 1 and the lower die 2 of the thickening die are closed, and the clamping die section a of the thickening die clamps and fixes the semi-finished product at a positioning distance of 30mm, as shown in fig. 11.
Then, extending a large-end punch into the thickening die from the outer end of the positioning section K of the thickening die, upsetting the raw material, and upsetting one end of the raw material positioned in the thickening die from the joint of the large-end compression section H and the positioning section K to the joint of the large-end compression section H and the large-end thickening section G; the size of the large end punch is shown in fig. 12; the reduction of the semi-finished product was 155mm as shown in FIG. 13.
And finally, separating the upper die 1 and the lower die 2 of the thickening die to take out the drill rod blank in the double-arm drill rod with the thickened large end and the thickened small end.
According to the thickening die and the thickening method for the drill rod in the double-arm drill rod, the large end thickening die and the small end thickening die of the thickening die are staggered back and forth in the same auxiliary die, the two ends can be thickened by adopting one auxiliary die, the number of required dies is small, and the die cost is low. According to the conventional thickening method for the drill rod blank in the AT30, two pairs of dies are adopted, the net weight of a small-end die is 70.5KG, and the net weight of a large-end die is 120.8 KG. Moreover, the thickening of the two ends can be completed by adopting one set of die, so that the die does not need to be disassembled and assembled in the thickening process, the non-production time of disassembling and assembling the die is eliminated, and the working efficiency of thickening is improved. Meanwhile, the thickened blank large end is closer to the shape of a product by thickening the forming section F with the large end, no cutting scrap is needed, the working hours of cutting and processing are reduced, and the working efficiency is further improved. According to the original thickening method of the drill rod blank in the AT30, the weight of raw materials is 12.3KG, the weight of the raw materials selected by the thickening die and the thickening method of the drill rod in the double-arm drill rod is 11.9KG, and the bar stock is saved by 0.4 KG.
Claims (4)
1. The thickening die for the drill rod in the double-arm drill rod comprises a die body, wherein the die body is provided with an upper die and a lower die, grooves are formed in the opposite positions of the lower surface of the upper die and the upper surface of the lower die, and the grooves of the upper die and the grooves of the lower die are butted to form a forming cavity; one end of the forming cavity is a clamping die section; the forming cavity is sequentially divided into a small-end thickening die and a large-end thickening die from one end close to the clamping die section to the other end; the small end thickening die is sequentially divided into a small end forming transition section, a small end thickening section and a small end compression amount section from one end close to the clamping die section to the other end, the inner diameter of the small end thickening section is larger than that of the small end forming transition section and the small end compression amount section, and the small end thickening section and the small end forming transition section, the small end thickening section and the small end compression amount section are in inclined surface transition; big end thickening mould divide into main aspects thickening shaping section, main aspects thickening section, main aspects compression section and location section from the one end that is close to tip compression section in proper order to the other end, and the internal diameter of main aspects thickening shaping section is greater than the internal diameter of tip compression section and main aspects thickening section, and all is the inclined plane transition between main aspects thickening shaping section and tip compression section, main aspects thickening shaping section and the main aspects thickening section.
2. The thickening mold for the inner drill rod of the double-arm drill rod as claimed in claim 1, wherein the inner diameter of the clamping mold section is smaller than that of the small end forming transition section, the inner diameter of the small end forming transition section is equal to that of the small end compression section, the inner diameter of the small end compression section is smaller than that of the large end thickening section, and the inner diameter of the large end thickening section is equal to that of the large end compression section and that of the positioning section.
3. A thickening die for a double-arm drill rod in a double-arm drill rod as claimed in claim 1 or 2, wherein a clamping forming transition section is arranged between the clamping die section and the small end forming transition section, and the inner diameter of the clamping forming transition section is larger than that of the small end forming transition section.
4. The thickening method of the drill rod in the double-arm drill rod is characterized by comprising the following steps of:
first, preparation before thickening
Calculating and selecting pipe materials with corresponding sizes as raw materials according to the sizes of the drill rod blanks in the double-arm drill rod to be prepared; simultaneously, selecting a thickening die of the drill rod in the double-arm drill rod as claimed in claim 1, and enabling the size of a forming cavity of the thickening die to be consistent with the size of a drill rod blank in the double-arm drill rod to be prepared;
second, thickening the small end
Firstly, heating one end of a pipe material to 1200-1250 ℃;
then, an upper die and a lower die of the thickening die are separated, and raw materials are placed between the upper die and the lower die from a clamping die section of the thickening die, so that one end of the raw materials is positioned in an inclined plane transition area of a small-end compression amount section and a large-end thickening forming section of the thickening die;
then, an upper die and a lower die of the thickening die are closed, and a clamping die section of the thickening die clamps and fixes the raw material;
then, a small end punch is extended into the thickening die from the outer end of the thickening die positioning section, the raw material is upset forged, and one end of the raw material positioned in the thickening die is upset forged to an inclined plane transition region of the small end compression amount section and the small end thickening section from an inclined plane transition region of the small end compression amount section and the large end thickening forming section;
finally, an upper die and a lower die of the thickening die are separated, and a semi-finished product with thickened small ends is taken out;
thirdly, thickening the big end
Firstly, heating the other end of the pipe material to 1200-1250 ℃;
then, an upper die and a lower die of the thickening die are separated, and one end of the semi-finished product which is far away from the small end and is thickened is placed between the upper die and the lower die from the thickening die clamping die section, so that the end of the semi-finished product is located at the connecting position of the large end compression amount section and the positioning section of the thickening die;
then, an upper die and a lower die of the thickening die are closed, and a clamping die section of the thickening die clamps and fixes the semi-finished product;
then, extending a large-end punch into the thickening die from the outer end of the positioning section of the thickening die, upsetting the raw material, and upsetting one end of the raw material positioned in the thickening die from the joint of the large-end compression amount section and the positioning section to the joint of the large-end compression amount section and the large-end thickening section;
and finally, separating the upper die and the lower die of the thickening die to take out the drill rod blank in the double-arm drill rod with the thickened large end and the thickened small end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110340105.1A CN113070438B (en) | 2021-04-06 | 2021-04-06 | Thickening die and thickening method for drill rod in double-arm drill rod |
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| CN202110340105.1A CN113070438B (en) | 2021-04-06 | 2021-04-06 | Thickening die and thickening method for drill rod in double-arm drill rod |
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| CN113070438B CN113070438B (en) | 2024-06-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA429037A (en) * | 1945-07-24 | Westin Sven | Pipe end upsetting apparatus | |
| US4277969A (en) * | 1979-10-24 | 1981-07-14 | Simon Joseph A | Method of cold forming tubes with interior thicker wall sections |
| CN1039636A (en) * | 1988-07-28 | 1990-02-14 | 曼内斯曼股份公司 | hollow drill |
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| CN101439385A (en) * | 2007-11-21 | 2009-05-27 | 上海海隆石油管材研究所 | Drill rocker end upsetting method |
| CN101468377A (en) * | 2007-12-28 | 2009-07-01 | 袁鹏斌 | Reverse molding necked-in transferring drill rocker end upsetting method |
| CN101569915A (en) * | 2009-06-18 | 2009-11-04 | 中南大学 | Method of controlling shape of internal upset transition zone free surface in oil drill pipe |
| CN101581200A (en) * | 2009-05-31 | 2009-11-18 | 盘锦辽河油田派普钻具制造有限公司 | 120 steel grade drill pipe and manufacturing process method thereof |
| CN201446209U (en) * | 2009-08-31 | 2010-05-05 | 江阴德玛斯特钻具有限公司 | New type module for thickening inner and outer of tube end of drilling rod tube |
| CN101767173A (en) * | 2008-12-31 | 2010-07-07 | 衡阳华菱钢管有限公司 | Drill stem thickening process and thickening module |
| CN102009118A (en) * | 2009-09-07 | 2011-04-13 | 江阴兴鼎石油管具有限公司 | Drill rod thickening die |
| CN201848485U (en) * | 2010-10-29 | 2011-06-01 | 江苏胜大石油设备制造有限公司 | Mold for thickening pipe nipple oil pipe |
| CN203140669U (en) * | 2012-12-27 | 2013-08-21 | 南通永大管业股份有限公司 | Drill rod external-upsetting forming die |
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| CN203808858U (en) * | 2014-04-08 | 2014-09-03 | 东营威玛石油钻具有限公司 | Conical-surface seat clamp drill rod |
| CN104624715A (en) * | 2015-02-05 | 2015-05-20 | 江苏常宝钢管股份有限公司 | Tube end upsetting molding method of super-short oil tube pup joint |
| CN204504108U (en) * | 2015-02-10 | 2015-07-29 | 山东墨龙石油机械股份有限公司 | A kind of pipe end thickening device |
| CN105170854A (en) * | 2015-09-30 | 2015-12-23 | 上海交通大学 | Tubular part local thickening molding device and method |
| WO2016133156A1 (en) * | 2015-02-18 | 2016-08-25 | 新日鐵住金株式会社 | Metal pipe having thickened end portion, and method of manufacturing same |
| JP2016165745A (en) * | 2015-03-10 | 2016-09-15 | 新日鐵住金株式会社 | Thickening molding method for pipe, and thickened pipe |
| WO2017134941A1 (en) * | 2016-02-05 | 2017-08-10 | 新日鐵住金株式会社 | Hollow tube material manufacturing method |
| CN206474621U (en) * | 2017-01-06 | 2017-09-08 | 鞍钢股份有限公司 | Thickening die support frame for processing thickening pipe |
| WO2017154481A1 (en) * | 2016-03-11 | 2017-09-14 | 新日鐵住金株式会社 | Method for manufacturing different-thickness steel pipe, and different-thickness steel pipe |
| CN107650612A (en) * | 2016-07-26 | 2018-02-02 | 丰田自动车株式会社 | Stabilizer antiroll bar, manufacture the method and metal pattern of stabilizer antiroll bar |
| CN207170819U (en) * | 2017-07-19 | 2018-04-03 | 无锡双马钻探工具有限公司 | A kind of big specification drill pipe upsetting mold |
| CN109127977A (en) * | 2018-07-17 | 2019-01-04 | 无锡双马钻探工具有限公司 | A kind of hydraulic efficient double-station drill pipe thickening machine |
| CN208483029U (en) * | 2018-05-03 | 2019-02-12 | 河北朗威石油装备有限公司 | A kind of oil drill rocker tube body thickening molding die |
| CN109433992A (en) * | 2018-12-24 | 2019-03-08 | 无锡双马钻探工具有限公司 | A kind of Split punch for drill pipe thickening |
| RU2686503C1 (en) * | 2018-05-11 | 2019-04-29 | Общество с ограниченной ответственностью "КТИАМ" | Method for combined pipe ends upsetting |
| CN208960887U (en) * | 2018-09-19 | 2019-06-11 | 无锡双马钻探工具有限公司 | Thicken monoblock type no-dig technique drilling rod male thread section thickening mould |
| CN110153214A (en) * | 2019-05-14 | 2019-08-23 | 中国船舶重工集团公司第七二五研究所 | A kind of molding die that alloy variable diameter is effective and the method for processing reducer pipe with it |
| CN110665985A (en) * | 2019-08-28 | 2020-01-10 | 无锡双马钻探工具有限公司 | Method for thickening petroleum and natural gas drill pipe by combining thickening with extrusion forming |
| JP2020066043A (en) * | 2018-10-26 | 2020-04-30 | 高周波熱錬株式会社 | Shaft thickening metal mold, shaft thickening device, stepped shaft manufacturing method and stepped shaft |
| CN112226694A (en) * | 2020-10-12 | 2021-01-15 | 江阴雷特斯钻具有限公司 | Trenchless drill rod and heat treatment process thereof |
| CN215033276U (en) * | 2021-04-06 | 2021-12-07 | 江阴雷特斯钻具有限公司 | Thickening die for drill rod in double-arm drill rod |
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2021
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