CN111001702B - Expanding type thermal forming process and mold for forming petroleum drilling centralizer - Google Patents
Expanding type thermal forming process and mold for forming petroleum drilling centralizer Download PDFInfo
- Publication number
- CN111001702B CN111001702B CN201911208593.XA CN201911208593A CN111001702B CN 111001702 B CN111001702 B CN 111001702B CN 201911208593 A CN201911208593 A CN 201911208593A CN 111001702 B CN111001702 B CN 111001702B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/02—Ejecting devices
- B21D45/04—Ejecting devices interrelated with motion of tool
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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
-
- 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
-
- 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
- B21J5/10—Piercing billets
Abstract
The invention provides a diameter expanding type hot forming process and a die for forming an oil drilling and production centralizer thereof, and the diameter expanding type hot forming process comprises a punch and a die body, wherein the die body is sequentially provided with a first small head positioning cavity, a second small head positioning cavity and a diameter expanding cavity from bottom to top, the punch comprises a first punch and a second punch, the first punch is used for downwards extruding a blank so that the diameter of a blank diameter expanding section in the diameter expanding cavity is increased, the blank diameter expanding section is upwards increased along the vertical direction, the second punch is used for downwards extruding so that the second small head of the blank is upwards increased along the vertical direction in the second small head positioning cavity, and the technical problem that after the oil drilling and production centralizer is formed, a metal fiber tissue is cut off is solved.
Description
Technical Field
The invention relates to an expanding type thermal forming process and a mold for forming an oil drilling centralizer.
Background
The existing forming process of the blank of the petroleum drilling centralizer is that round steel bars are subjected to intermediate frequency heating and then are subjected to upsetting by an oil press, then are subjected to profiling, forming and backward extrusion are performed after the profiling is completed, and the stamping of the existing petroleum drilling centralizer is completed by three sets of dies: profiling die, forming die and cut-out press.
Firstly, when the product is integrally formed, in order to overcome the defect that the product is difficult to form due to large diameter variation ratio, the allowance of the connecting part between the inner hole of the small end and the inner hole of the large end is increased, the product is in conical transition, the outer circle of the large end of the product is small and the middle is large, the stamping is difficult to guarantee, and the characteristics of large middle and small two ends required by the product must be achieved through later-stage machining. Because the later mechanical processing is needed, the blank allowance is large, the utilization rate of raw materials is low, the processing cost is high, and the cost is high.
Furthermore, when the blank is formed, the upper end and the inner hole of the oil drilling centralizer blank cannot be directly forged and formed, the inner hole and the outer circle are machined to form the required shape of the product through machining, and the metal fiber structure is artificially cut off, so that the internal quality and the fatigue resistance service life of the workpiece are reduced.
Disclosure of Invention
The invention provides a diameter expanding type thermal forming process and a mold for forming an oil drilling centralizer, and aims to solve the technical problem that after the oil drilling centralizer is formed, a metal fiber tissue is cut off.
The technical scheme of the invention is realized as follows: the utility model provides a mould is used in centralizer shaping is adopted in oil drilling, includes drift, mould body, the mould body is from supreme first microcephaly location chamber, the microcephaly location chamber of second, the footpath chamber of expanding of being equipped with in proper order down, the drift is including being used for extrudeing the blank downwards so that the blank expands footpath section and the first drift that the vertical direction upwards increased, is used for downwards extrusion so that the blank second microcephaly upwards increases the second drift along the vertical direction in the microcephaly location intracavity of second.
Further, the first punch comprises a first ejector rod and a first end portion, the second punch comprises a second ejector rod and a second end portion, and the length of the second end portion is larger than that of the first end portion.
Furthermore, the first small head positioning cavity, the second small head positioning cavity and the diameter expanding cavity are in smooth transition between the first small head positioning cavity and the second small head positioning cavity.
Further, the die body comprises a compression lower die provided with a first small head positioning cavity, a second small head positioning cavity and an expansion diameter cavity, the compression lower die is embedded in the die holder, and the compression lower die is any one of a round table and a prismatic table.
Further, be equipped with the big cover between die mould lower mould and the die holder, the die holder upper end is equipped with the die mould and goes up the mould, bayonet fitting is in order to prevent both relative horizontal motion between the die mould and the die mould lower mould on the die mould, the mould goes up the removable fixed connection of mould and big cover on the die mould, the die mould overlaps on the die mould and is equipped with little clamping ring, the removable fixed connection of little clamping ring and die holder, mould body lower extreme is equipped with the ejecting hole, be equipped with the ejector pin in the ejecting hole in order to follow this internal ejecting of mould with the blank.
Furthermore, the lower end of the profiling lower die and the lower end of the large sleeve are parallel and level, and adjusting pads are arranged between the lower end of the profiling lower die and the lower end of the large sleeve and the die holder.
The diameter-expanding type thermal forming process comprises the mold for forming the petroleum drilling centralizer, and specifically comprises the following steps: (1) performing shallow punching while upsetting the blank, and forming a first small end of the blank; (2) transferring the blank into a mold for forming the petroleum drilling centralizer, extending a first punch into a shallow punch hole, and performing first deep punching on the blank downwards so as to increase the diameter of a blank expansion section in an expansion cavity and increase the blank expansion section upwards along the vertical direction; (3) and replacing the first punch head with a second punch head and continuously carrying out secondary deep punching on the blank so that the second small head of the blank grows upwards in the vertical direction in the second small head positioning cavity.
By adopting the technical scheme, the invention has the beneficial effects that:
(1) the hot forming process of the blank with a large middle and two small ends is realized.
(2) Under the basic condition of the existing equipment, the technical problems that the upper end of a blank is freely formed during forming, and the joint of profiling and forming has no stamping defect are solved.
(3) The process is simple, can save a large amount of metal materials, and can obtain the full-fiber metal streamline distributed along the axial direction, so that the mechanical properties of the product in the aspects of tensile strength, yield strength, impact energy and the like are greatly broken through.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a mound mold according to the present invention;
FIG. 2 is a schematic structural view of a first deep drawing of a mold for forming the centralizer for oil drilling and production according to the present invention;
FIG. 3 is a schematic structural view of a second deep drawing of the oil drilling centralizer forming die of the present invention;
fig. 4 is a schematic structural diagram of the formed blank of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment 1 of the die for forming the centralizer for oil drilling comprises a punch and a die body, wherein the die body is sequentially provided with a first small-head positioning cavity 1, a second small-head positioning cavity 2 and a diameter expanding cavity 3 from bottom to top, the punch comprises a first punch 4 and a second punch 5, the first punch 4 is used for downwards extruding a blank so that the diameter of a blank expansion section in the diameter expanding cavity is increased, the blank expansion section is upwards increased along the vertical direction, and the second punch 5 is used for downwards extruding so that the second small head of the blank is upwards increased along the vertical direction in the second small-head positioning cavity. The oil drilling and production centralizer formed by the forming die for the oil drilling and production centralizer is integrally formed without machining, so that a large amount of metal materials are saved, and simultaneously, full-fiber metal flow lines distributed along the axial direction can be obtained, and the mechanical properties of the product in the aspects of tensile strength, yield strength, impact energy and the like are greatly broken through.
The utility model provides a mould embodiment 2 for oil drilling centralizer shaping, as shown in fig. 1-4, including the drift, the mould body is equipped with first small head location chamber 1 from supreme down in proper order, second small head location chamber 2, the footpath chamber 3 expands, the drift is including being used for extrudeing the blank downwards so that the blank expands footpath section and the first drift 4 that the diameter section upwards increases along the vertical direction at the intracavity diameter increase of expanding footpath, be used for extrudeing downwards so that the blank second small head upwards increases along the vertical direction at the intracavity location of the second small head 5, first drift includes first ejector pin 6, first end portion 7, the second drift includes second ejector pin 8, second end portion 9, second end portion length is greater than first end portion.
The utility model provides a mould embodiment 3 for oil drilling centralizer shaping, as shown in fig. 1-4, including the drift, the mould body, from the supreme first microcephaly location chamber 1 that is equipped with in proper order down of mould body, second microcephaly location chamber 2, the footpath chamber 3 expands, the drift includes and is used for extrudeing the blank downwards so that the inside diameter increase of blank expansion diameter section in the expansion diameter chamber and blank expansion diameter section upwards increases along the vertical direction first drift 4, be used for extrudeing downwards so that the blank second microcephaly upwards increases along the vertical direction in second microcephaly location chamber 5, first drift includes first ejector pin 6, first end 7, the second drift includes second ejector pin 8, second end 9, second end length is greater than first end, first microcephaly location chamber 1, second microcephaly location chamber 2, smooth transition between the adjacent two of expansion diameter chamber 3.
An embodiment 4 of a mold for forming a centralizer for oil drilling and production comprises a punch and a mold body, wherein the mold body is sequentially provided with a first small head positioning cavity 1, a second small head positioning cavity 2 and an expanding cavity 3 from bottom to top, the first small head positioning cavity 1, the second small head positioning cavity 2 and the expanding cavity 3 are used for positioning a first small head 103, the punch comprises a first punch 4 and a second punch 5, the first punch 4 is used for downwards extruding a blank so that an expanding section 101 of the blank 100 is increased in diameter in the expanding cavity and the expanding section of the blank is increased upwards along the vertical direction, the second punch is used for downwards extruding so that a second small head 102 of the blank is increased upwards along the vertical direction in the second small head positioning cavity, the first punch comprises a first ejector rod 6 and a first end part 7, the second punch comprises a second ejector rod 8 and a second end part 9, the length of the second end part is greater than that of the first end part, the first small head positioning cavity 1, the second small head positioning cavity 2 and the expanding, the mould body is including being equipped with first microcephaly location chamber, second microcephaly location chamber, the die mould lower mould 10 in footpath chamber expands, the die holder 11 is inlayed to the die mould lower mould, the die mould lower mould is the round platform, the optional one of terrace with edge, be equipped with big cover 12 between die mould lower mould and the die holder, die holder upper end is equipped with die mould 13, bayonet socket cooperation is in order to prevent both relative horizontal motion between the die mould upper mould and the die mould lower mould, die mould and the removable fixed connection of big cover on the die mould, die mould cover is equipped with little clamping ring 14 on the die mould, the removable fixed connection of little clamping ring and die holder, mould body lower extreme is equipped with ejection hole 15, be equipped with ejector pin 16 in the ejection hole in order to follow this internal ejecting of mould with the blank after the blank shaping, die mould lower.
An expanding thermal forming process comprises the dies for forming the oil drilling centralizer in the embodiments 1-4, and comprises the following steps: (1) as shown in fig. 1, a shallow punch is performed while upsetting a blank by using a shallow punch 20 in a upsetting die, and a first small end of the blank is formed, the upsetting prevents the blank from being too large in diameter ratio during forming and difficult to form, and the shallow punch provides guide punch for forming, so that the allowance and deviation of the blank during precision forming are ensured; (2) as shown in fig. 2, the blank is transferred into a mold for forming the centralizer for oil drilling and production, a first punch is extended into a shallow punch and performs a first deep punch on the blank downwards so that the diameter of a blank expansion section in an expansion cavity is increased and the blank expansion section is increased upwards along the vertical direction, the upper end of the blank does not participate in deformation in the cavity, and the middle of the blank starts to change along the radial direction and the axial direction; (3) as shown in fig. 3, the first punch is replaced by a second punch and the blank is further deep punched for a second time so that the second small end of the blank grows upwards in the vertical direction in the second small end positioning cavity.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides a mould is used in oil drilling centralizer shaping, includes drift, mould body, its characterized in that, mould body is equipped with first microcephaly location chamber, second microcephaly location chamber, the footpath chamber of expanding from supreme down in proper order, the drift is including being used for extrudeing the blank downwards so that the blank expands footpath section and the first drift that the vertical direction upwards increased, be used for downwards extrusion so that the blank second microcephaly upwards increases along the vertical direction in the second microcephaly location intracavity.
2. The oil drilling centralizer forming die of claim 1, wherein the first punch comprises a first ram, a first end, and the second punch comprises a second ram, a second end, the second end being longer than the first end.
3. The oil drilling centralizer molding die of claim 2, wherein the first small head positioning cavity, the second small head positioning cavity and the expanding diameter cavity are in smooth transition between the adjacent small head positioning cavity, the second small head positioning cavity and the expanding diameter cavity.
4. The mold for forming the centralizer for oil drilling and production according to claim 3, wherein the mold body comprises a lower compression mold provided with a first small head positioning cavity, a second small head positioning cavity and an expansion cavity, the lower compression mold is embedded in the mold base, and the lower compression mold is any one of a circular truncated cone and a prismatic table.
5. The mold for forming the petroleum drilling centralizer according to claim 4, wherein a large sleeve is arranged between the lower profiling mold and the mold base, an upper profiling mold is arranged at the upper end of the mold base, the upper profiling mold and the lower profiling mold are in bayonet fit to prevent relative horizontal movement of the upper profiling mold and the lower profiling mold, the upper profiling mold is detachably and fixedly connected with the large sleeve, a small pressing ring is sleeved on the upper profiling mold and is detachably and fixedly connected with the mold base, an ejection hole is formed in the lower end of the mold body, and an ejector rod is arranged in the ejection hole to eject the blank out of the mold body after the blank is formed.
6. The mold for forming the centralizer for oil drilling and production according to claim 5, wherein the lower end of the lower profiling die and the lower end of the large sleeve are flush, and adjusting pads are arranged between the lower end of the lower profiling die, the lower end of the large sleeve and the mold base.
7. An expanding thermal forming process, which is characterized by comprising the mold for forming the oil drilling centralizer of any one of claims 1 to 6, and comprises the following steps: (1) performing shallow punching while upsetting the blank, and forming a first small end of the blank; (2) transferring the blank into a mold for forming the petroleum drilling centralizer, extending a first punch into a shallow punch hole, and performing first deep punching on the blank downwards so as to increase the diameter of a blank expansion section in an expansion cavity and increase the blank expansion section upwards along the vertical direction; (3) and replacing the first punch head with a second punch head and continuously carrying out secondary deep punching on the blank so that the second small head of the blank grows upwards in the vertical direction in the second small head positioning cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911208593.XA CN111001702B (en) | 2019-11-30 | 2019-11-30 | Expanding type thermal forming process and mold for forming petroleum drilling centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911208593.XA CN111001702B (en) | 2019-11-30 | 2019-11-30 | Expanding type thermal forming process and mold for forming petroleum drilling centralizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111001702A CN111001702A (en) | 2020-04-14 |
| CN111001702B true CN111001702B (en) | 2021-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911208593.XA Active CN111001702B (en) | 2019-11-30 | 2019-11-30 | Expanding type thermal forming process and mold for forming petroleum drilling centralizer |
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| CN (1) | CN111001702B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113231591A (en) * | 2021-06-07 | 2021-08-10 | 哈尔滨哈飞工业有限责任公司 | Group die for vertical forging of metal pipe |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0032668A1 (en) * | 1980-01-18 | 1981-07-29 | Karl Sieber GmbH & Co. KG Fabrik für Umformwerkzeuge | Cold-process or semicold-process massive-forming die |
| JPS6018247A (en) * | 1983-07-12 | 1985-01-30 | Toyota Motor Corp | Working device for outer ring of synchronous universal joint |
| CN101829696A (en) * | 2010-04-06 | 2010-09-15 | 邓晓光 | Deep hole extrusion forming process of medium-carbon low-alloy structural steel |
| CN103341736A (en) * | 2013-07-10 | 2013-10-09 | 南阳市红阳锻造有限公司 | Large standard screw drilling rig centralizer hot extrusion molding technology |
| CN104259375A (en) * | 2014-09-29 | 2015-01-07 | 泰州浙华机械精锻有限公司 | Vertical precision forging process of oil drill pipe joint |
| 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 |
| KR20190092633A (en) * | 2018-01-29 | 2019-08-08 | 주식회사 세림티앤디 | Integrated cold forging method and apparatus therefor for weight of monolithic eccentric yoke for steering |
| CN209349444U (en) * | 2018-12-05 | 2019-09-06 | 南阳红阳远大重工有限公司 | A kind of big variable diameter automobile half shaft tube hot-extrusion die |
-
2019
- 2019-11-30 CN CN201911208593.XA patent/CN111001702B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0032668A1 (en) * | 1980-01-18 | 1981-07-29 | Karl Sieber GmbH & Co. KG Fabrik für Umformwerkzeuge | Cold-process or semicold-process massive-forming die |
| JPS6018247A (en) * | 1983-07-12 | 1985-01-30 | Toyota Motor Corp | Working device for outer ring of synchronous universal joint |
| CN101829696A (en) * | 2010-04-06 | 2010-09-15 | 邓晓光 | Deep hole extrusion forming process of medium-carbon low-alloy structural steel |
| CN103341736A (en) * | 2013-07-10 | 2013-10-09 | 南阳市红阳锻造有限公司 | Large standard screw drilling rig centralizer hot extrusion molding technology |
| CN104259375A (en) * | 2014-09-29 | 2015-01-07 | 泰州浙华机械精锻有限公司 | Vertical precision forging process of oil drill pipe joint |
| 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 |
| KR20190092633A (en) * | 2018-01-29 | 2019-08-08 | 주식회사 세림티앤디 | Integrated cold forging method and apparatus therefor for weight of monolithic eccentric yoke for steering |
| CN209349444U (en) * | 2018-12-05 | 2019-09-06 | 南阳红阳远大重工有限公司 | A kind of big variable diameter automobile half shaft tube hot-extrusion die |
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| CN111001702A (en) | 2020-04-14 |
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