CN105458137A - Thermal broaching device capable of improving rigidity of mandrel - Google Patents
Thermal broaching device capable of improving rigidity of mandrel Download PDFInfo
- Publication number
- CN105458137A CN105458137A CN201510991860.0A CN201510991860A CN105458137A CN 105458137 A CN105458137 A CN 105458137A CN 201510991860 A CN201510991860 A CN 201510991860A CN 105458137 A CN105458137 A CN 105458137A
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- CN
- China
- Prior art keywords
- mandrel
- rigidity
- saddle support
- upper bracket
- reinforcement plate
- Prior art date
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Classifications
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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
-
- 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
- B21J13/06—Hammers tups; Anvils; Anvil blocks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a thermal broaching device capable of improving the rigidity of a mandrel, relates to the thermal broaching device of a cylindrical forge piece, and aims to solve the technical problems that horn mouth defects of the cylindrical forge piece are caused during a broaching process because of insufficient rigidity of the mandrel in the prior art. The thermal broaching device consists of an upper anvil, the mandrel, a pair of mandrel supporters and a mandrel rigidity reinforcing plate, wherein each mandrel supporter consists of a mandrel supporter upper bracket and a mandrel supporter lower bracket; a semicircular groove for arranging the mandrel is formed in the upper end of the mandrel supporter upper bracket; a narrow rectangular groove for arranging the mandrel rigidity reinforcing plate is formed in the middle part of the mandrel supporter upper bracket; the narrow rectangular groove is communicated with the semicircular groove; the mandrel supporter lower bracket is provided with a wide rectangular groove for arranging the mandrel supporter upper bracket; the mandrel rigidity reinforcing plate is a rectangular plate; the upper end of the mandrel rigidity reinforcing plate is in contact with the mandrel; the lower end of the mandrel rigidity reinforcing plate is in contact with the bottom of the narrow rectangular groove of the mandrel supporter upper bracket. According to the thermal broaching device disclosed by the invention, the mandrel rigidity reinforcing plate is additionally arranged below the mandrel, so equivalently the rigidity of the mandrel is improved; the cylindrical forge piece is protected from horn mouth defects during the broaching process; meanwhile, the diameter of the mandrel is reduced; the production cost is lowered.
Description
Technical field
The invention belongs to field of metal material heat processing technology, be specifically related to a kind of hot Counterboring apparatus improving mandrel rigidity.
Technical background
In field of metal material heat processing technology, core axial hole machining technique commonly used by forging cylindrical shape forging.When using core axial hole machining, thinning along with cylindrical shape forging wall thickness, inside and outside footpath expands simultaneously, highly has increased slightly.In order to obtain the more smooth forging of inwall, axle diameter should increase with borehole enlargement usually.
Along with further developing of cylindrical shape forging the Enlargement Tendency, cylindrical shape diameter of forgings is increasing, highly more and more higher.Be limited to the consideration of equipment and economic aspect, the mandrel of reaming infinitely can not increase with the diameter of cylindrical shape forging, therefore, when the cylindrical shape forging forged highly and diameter is larger, and the axle diameter selected relatively less than normal time, occur sometimes due to the deficiency of mandrel rigidity and cause the bell-mouthed defect of cylindrical shape forging.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, a kind of hot Counterboring apparatus improving mandrel rigidity is provided, solve prior art due to mandrel insufficient rigidity, the technical problem of cylindrical shape forging horn mouth defect can be caused in reaming procedure.
The present invention is achieved by the following technical solutions:
Improve a hot Counterboring apparatus for mandrel rigidity, it is characterized in that: this device is made up of upper anvil, mandrel, a pair saddle support and mandrel rigidity reinforcement plate; Described saddle support is made up of saddle support upper bracket and saddle support undersetting; Described saddle support upper bracket upper end has the half slot placing described mandrel, and have the narrow rectangular channel placing described mandrel rigidity reinforcement plate in the middle part of described saddle support upper bracket, described narrow rectangular channel and described half slot communicate; Described saddle support undersetting has the wide rectangular channel placing saddle support upper bracket; Described mandrel rigidity reinforcement plate is a rectangular slab.
Further, the length of described mandrel rigidity reinforcement plate is equal to or slightly less than the length of described mandrel.
Further, when being inserted in the narrow rectangular channel of two described saddle support upper brackets by described mandrel rigidity reinforcement plate, the upper end of described mandrel rigidity reinforcement plate contacts with described mandrel, and lower end contacts with the bottom of the narrow rectangular channel of described saddle support upper bracket.
The present invention compared with prior art, owing to having been set up mandrel rigidity reinforcement plate below mandrel by saddle support, lower flexure strain in the middle part of mandrel under press effect can be subject to the support of mandrel rigidity reinforcement plate, be equivalent to the rigidity adding mandrel, avoid cylindrical shape forging in reaming procedure, produce bellmouth orifice defect, can axle diameter be reduced simultaneously, reduce production cost.
Accompanying drawing explanation
Fig. 1 is the structural representation (because mandrel insufficient rigidity causes cylindrical shape forging horn mouth defect) of existing core axial hole machining device;
Fig. 2 is structural representation of the present invention (front view) under cylindrical shape forging reaming original state;
Fig. 3 is the side view of Fig. 2;
Fig. 4 is for arranging structural representation of the present invention (front view) after mandrel rigidity reinforcement plate;
Fig. 5 is the side view of Fig. 4;
Fig. 6 is the structural representation of saddle support upper bracket of the present invention;
Fig. 7 is the structural representation of saddle support undersetting of the present invention.
Detailed description of the invention
Embody the exemplary embodiments of feature & benefits of the present invention, will describe in detail in the following description by reference to the accompanying drawings.Be understood that the present invention can have various changes in different embodiments, it neither departs from protection scope of the present invention, and explanation wherein and to be shown in be use when explain in essence, and be not used to limit the present invention.
A cylindrical shape forging finished size is as follows: external diameter Φ 2880mm, internal diameter Φ 2435mm, high 3220mm, select the mandrel of diameter of phi 1120mm, there occurs horn mouth defect after adopting the reaming of existing core axial hole machining device, as shown in Figure 1, subsequent technique requirement cannot be met.After using following device of the present invention and corresponding technique, axle diameter does not change, but avoids horn mouth defect, meets subsequent technique requirement.
As shown in Figures 1 to 7, a kind of hot Counterboring apparatus improving mandrel rigidity, is made up of upper anvil 2, mandrel 4, a pair saddle support 3 and mandrel rigidity reinforcement plate 7; Described saddle support 3 is made up of saddle support upper bracket 31 and saddle support undersetting 32; Described saddle support upper bracket 31 upper end has the half slot 311 placing described mandrel 4, and have the narrow rectangular channel 312 placing described mandrel rigidity reinforcement plate 7 in the middle part of described saddle support upper bracket 31, described narrow rectangular channel 312 and described half slot 311 communicate; Described saddle support undersetting 32 has the wide rectangular channel 321 placing saddle support upper bracket 31; Described mandrel rigidity reinforcement plate 7 is a rectangular slab.
The length L2 of described mandrel rigidity reinforcement plate 7 is equal to or slightly less than the length L1 of described mandrel 4.
When being inserted in the narrow rectangular channel 312 of two described saddle support upper brackets 31 by described mandrel rigidity reinforcement plate 7, the upper end of described mandrel rigidity reinforcement plate 7 contacts with described mandrel 4, and lower end contacts with the bottom of the narrow rectangular channel 312 of described saddle support upper bracket 31.
The concrete steps of using method of the present invention are:
(1) a pair saddle support undersetting 32 is placed in press bed correct position respectively, then a pair saddle support upper bracket 31 is placed in the wide rectangular channel 321 of saddle support undersetting 32 respectively;
(2) insert with mandrel 4 in the hole of cylindrical shape forge piece blank reheating 5, and by mandrel 4 two ends built in the half slot 311 of a pair saddle support upper bracket 31;
(3) press 1 with upper anvil 2 presses down, and starts core axial hole machining technique under the cooperation of manipulator;
(4) when the internal diameter of cylindrical shape forge piece blank reheating 5 expand to be greater than mandrel 4 diameter D add the height H being enough to of saddle support rigidity reinforcement plate 7 hold both time, mandrel rigidity reinforcement plate 7 is inserted in the narrow rectangular channel 312 of two saddle support upper brackets 31, the upper end of mandrel rigidity reinforcement plate 7 contacts with mandrel 4, and lower end contacts with the bottom of the narrow rectangular channel 312 of saddle support upper bracket 31;
(5) core axial hole machining technique is continued, until cylindrical shape forging finished size.
In described technical process (4), because mandrel 4 lower end adds mandrel rigidity reinforcement plate 7, lower flexure strain in the middle part of mandrel 4 under press effect can be subject to the support of mandrel rigidity reinforcement plate 7, its downwarp amount can reduce greatly, be equivalent to the rigidity adding mandrel 4, cylindrical shape forging can be avoided to produce bellmouth orifice defect.
The present invention specifically can implement in a variety of forms and not depart from spirit or the essence of invention; so be to be understood that; above-described embodiment is only the preferred embodiment of the present invention; and should explain widely in claim limited range, therefore fall into change in claim or its equivalent scope and remodeling all should be considered as protection scope of the present invention.
Claims (3)
1. can improve a hot Counterboring apparatus for mandrel rigidity, it is characterized in that: the described hot Counterboring apparatus improving mandrel rigidity is made up of upper anvil (2), mandrel (4), a pair saddle support (3) and mandrel rigidity reinforcement plate (7); Described saddle support (3) is made up of saddle support upper bracket (31) and saddle support undersetting (32); Described saddle support upper bracket (31) upper end has the half slot (311) placing described mandrel (4), described saddle support upper bracket (31) middle part has the narrow rectangular channel (312) placing described mandrel rigidity reinforcement plate (7), and described narrow rectangular channel (312) and described half slot (311) communicate; Described saddle support undersetting (32) has the wide rectangular channel (321) placing saddle support upper bracket (31); Described mandrel rigidity reinforcement plate (7) is a rectangular slab.
2. according to the hot Counterboring apparatus improving mandrel rigidity according to claim 1, it is characterized in that: the length (L2) of described mandrel rigidity reinforcement plate (7) is equal to or slightly less than the length (L1) of described mandrel (4).
3. according to the hot Counterboring apparatus improving mandrel rigidity according to claim 1, it is characterized in that: described mandrel rigidity reinforcement plate (7) is inserted into the narrow rectangular channel (312) of two described saddle support upper brackets (31) interior time, the upper end of described mandrel rigidity reinforcement plate (7) contacts with described mandrel (4), and lower end contacts with the bottom of the narrow rectangular channel (312) of described saddle support upper bracket (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510991860.0A CN105458137B (en) | 2015-12-25 | 2015-12-25 | A kind of thermal expansion aperture apparatus for improving mandrel rigidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510991860.0A CN105458137B (en) | 2015-12-25 | 2015-12-25 | A kind of thermal expansion aperture apparatus for improving mandrel rigidity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105458137A true CN105458137A (en) | 2016-04-06 |
| CN105458137B CN105458137B (en) | 2018-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510991860.0A Active CN105458137B (en) | 2015-12-25 | 2015-12-25 | A kind of thermal expansion aperture apparatus for improving mandrel rigidity |
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| CN (1) | CN105458137B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5212663A (en) * | 1975-07-21 | 1977-01-31 | Japan Steel Works Ltd | Method and equipment for forging rings by means of forging press |
| JPH079066A (en) * | 1991-09-24 | 1995-01-13 | Suzuki Motor Corp | Extrusion forming apparatus |
| JP2000176589A (en) * | 1998-12-10 | 2000-06-27 | Otics Corp | Plastic working method for forming caulking claw part |
| CN201632577U (en) * | 2010-03-22 | 2010-11-17 | 常州市康宁锻造有限公司 | Trestle for reaming mandrel |
| CN101984194A (en) * | 2010-11-19 | 2011-03-09 | 北京工业大学 | Restricted buckling restrained brace with parallel energy-dissipation mild steel plate and manufacturing method thereof |
| CN102319855A (en) * | 2011-08-27 | 2012-01-18 | 江阴振宏重型锻造有限公司 | Method for forging thick-walled ring-shaped parts |
| CN104139145A (en) * | 2014-08-11 | 2014-11-12 | 贵州航天新力铸锻有限责任公司 | Method for forging guide horn mouth forge pieces applied to internal components of nuclear reactor |
| CN205236925U (en) * | 2015-12-25 | 2016-05-18 | 太原科技大学 | Can improve hot reaming device of dabber rigidity |
-
2015
- 2015-12-25 CN CN201510991860.0A patent/CN105458137B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5212663A (en) * | 1975-07-21 | 1977-01-31 | Japan Steel Works Ltd | Method and equipment for forging rings by means of forging press |
| JPH079066A (en) * | 1991-09-24 | 1995-01-13 | Suzuki Motor Corp | Extrusion forming apparatus |
| JP2000176589A (en) * | 1998-12-10 | 2000-06-27 | Otics Corp | Plastic working method for forming caulking claw part |
| CN201632577U (en) * | 2010-03-22 | 2010-11-17 | 常州市康宁锻造有限公司 | Trestle for reaming mandrel |
| CN101984194A (en) * | 2010-11-19 | 2011-03-09 | 北京工业大学 | Restricted buckling restrained brace with parallel energy-dissipation mild steel plate and manufacturing method thereof |
| CN102319855A (en) * | 2011-08-27 | 2012-01-18 | 江阴振宏重型锻造有限公司 | Method for forging thick-walled ring-shaped parts |
| CN104139145A (en) * | 2014-08-11 | 2014-11-12 | 贵州航天新力铸锻有限责任公司 | Method for forging guide horn mouth forge pieces applied to internal components of nuclear reactor |
| CN205236925U (en) * | 2015-12-25 | 2016-05-18 | 太原科技大学 | Can improve hot reaming device of dabber rigidity |
Non-Patent Citations (1)
| Title |
|---|
| 施东成: "《轧钢机械设计方法》", 31 March 1991, 冶金工业出版社 * |
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| CN105458137B (en) | 2018-03-20 |
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Inventor after: Tian Jihong Inventor after: Duan Xingwang Inventor after: Guo Fengwei Inventor after: Wang Wenhao Inventor after: Chen Huiqin Inventor after: Qin Min Inventor after: Zhang Huayu Inventor after: Zhao Jinhua Inventor after: Li Jingdan Inventor after: Liu Jiansheng Inventor after: Zheng Xiaohua Inventor after: He Wenwu Inventor before: Tian Jihong Inventor before: Wang Wenhao Inventor before: Guo Fengwei Inventor before: Qin Min Inventor before: Zhang Huayu Inventor before: Li Jingdan Inventor before: Liu Jiansheng Inventor before: Zheng Xiaohua Inventor before: He Wenwu Inventor before: Duan Xingwang |
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