CN102601293B - Die assembly for forming torsional lock bolt - Google Patents
Die assembly for forming torsional lock bolt Download PDFInfo
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- CN102601293B CN102601293B CN201210095081.9A CN201210095081A CN102601293B CN 102601293 B CN102601293 B CN 102601293B CN 201210095081 A CN201210095081 A CN 201210095081A CN 102601293 B CN102601293 B CN 102601293B
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Abstract
The invention discloses a die assembly for forming a torsional lock bolt, which belongs to the technical field of manufacture of fasteners. The die assembly comprises a first die and a second die which respectively comprise an upper die and a lower die. The bottom of the upper die of the first die is provided with a circular opening, the upper portion of the circular opening is provided with a conical hole, the upper portion of the conical hole is connected with a conical cavity, and the conical cavity retracts upwards and extends to the top of the upper die. The bottom of the upper die of the second die is provided with a circular opening, the upper portion of the circular opening is provided with a conical hole, the upper portion of the conical hole is connected with a square cavity, and the square cavity extends upwards to the top of the upper die. The top of each lower die is provided with a circular opening, the lower portion of the circular opening is provided with a conical hole, and the lower portion of the conical hole is connected with the circular cavity. The die assembly can be used for forming a body of the torsional lock bolt by means of hot heading, so that the problems of high cost, low efficiency and poor precision in traditional turning are avoided, and high-efficiency, high-speed and high-quality production of the torsional lock bolt is realized.
Description
Technical field
The invention belongs to securing member manufacturing technology field, be specifically related to a kind of processing mold of bolt.
Background technology
One is turned round and is cut check bolt, is widely used on cement machinery equipment, has substantially replaced common dormant bolt.As shown in Figure 1, this turning round cut check bolt, comprises four angle heads, turns round the portion of cutting, large round end and bar portion, and each part mentioned above connects successively.There is molybdenum bisuphide coating on the surface of bolt, is mainly used in lubrication.The screw thread position of bolt also scribbles the locking glue that Germany produces, and is mainly used in locking, anti-skiddingly, and bolt and nut is closely cooperated.While using installation process, tighten this bolt by electric tool.When pretightning force arrives when design load, bolt turn round the portion's of cutting fracture, four angle heads separate with bolt, thereby have ensured reliable pretension effect, have realized that bolt and nut is permanent to closely cooperate.
Because this bolt complex contour, performance requirement are high again, at present to the processing of this bolt mainly taking Vehicle Processing as main.But Vehicle Processing is a kind of method that working (machining) efficiency is very low, the Product Precision of producing also poor, cost remains high.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the present invention proposes a kind of turning round and cuts the processing method of check bolt and a kind of for turning round the die assembly of cutting check bolt moulding, mainly utilize hot forging process, realize this turning round and cut the efficient, at a high speed and high-quality production of check bolt.
Turn round a processing method of cutting check bolt, employing C22 is raw material, comprises following steps:
A) operation before hot upsetting, carries out pickling, phosphatization processing to raw material, reel off raw silk from cocoons, and blanking, chamfering, contracting bar, obtains treating shaping blank;
B) just shaping, heating blank, heating-up temperature is 800 ~ 1000 DEG C, and the blank rotary after heating is moved on in a mould and pushed, and obtains just shaping blank;
C) shaping again, pushes again to the first shaping blank in a mould, obtains shaping blank again;
D) four jiaos of upsettings, shaping blank rotary moves on in No. two moulds and pushes again, and four angle heads of bolt are made in upsetting, complete large round end and the moulding of bar portion of bolt, obtain treating turning blank;
E) deburring overlap, burr and the overlap of turning blank treated in excision;
F) turning, utilizes lathe that the portion finish turning of cutting of turning round of bolt is put in place, obtains bolt semi-finished product;
G) subsequent treatment, carries out rolled thread to bolt semi-finished product, is coated with locking glue, is coated with molybdenum bisuphide, finally obtains bolt finished product.
First shaping blank in above-mentioned steps B, the full degree at the following position of the large round end of its bolt is 80% of finished product.
The blank of shaping again in above-mentioned steps C, except bolt is turned round the portion of cutting and four angle heads, the full degree at all the other positions is finished product 95%.
In rolled thread operation in above-mentioned steps G, be specially and utilize the rolled thread forcing press of 20 tons screw thread extrusion modling.
For turning round a die assembly of cutting check bolt moulding, comprise a mould and No. two moulds mentioned in above-mentioned steps, a mould, No. two moulds are made up of upper die and lower die respectively, wherein:
The bottom of a mould patrix is provided with a circular open, this circular open top is provided with a bellmouth, the large nose end of this bellmouth is connected mutually with circular open top, and the small bore end of this bellmouth is connected mutually with a conical cavity, and this conical cavity upwards shrinks and extend to the top of patrix.
The bottom of No. two mould patrixes is provided with a circular open, this circular open top is provided with a bellmouth, the large nose end of this bellmouth is connected mutually with circular open top, and the small bore end of this bellmouth is connected mutually with a square chamber, and the party chamber extends up to the top of patrix.
The top of a mould counterdie, No. two mould counterdies is equipped with a circular open, circular open bottom is equipped with a bellmouth, the large nose end of bellmouth is connected mutually with circular open bottom, and the small bore end of bellmouth is all connected mutually with a circular cavity, and circular cavity all extends downwardly into the bottom of counterdie.
Wherein, a mould patrix circular open and a mould counterdie circular open, the large round end blank of jointly making bolt for upsetting; No. one mould patrix conical cavity is used for the four angle head blanks that bolt is made in upsetting; A mould counterdie circular cavity, the bar portion blank of making bolt for upsetting; No. two mould patrix circular opens and No. two mould counterdie circular opens, the common large round end of making bolt for upsetting; Four angle heads of bolt are made in chamber, No. two mould patrix sides for upsetting; No. two mould counterdie circular cavities, the bar portion that makes bolt for upsetting.
The beneficial effect of turning round the processing method of cutting check bolt of the present invention is: this method has adopted hot forging process, can utilize hot upsetting former at a high speed, carries out efficient, at a high speed and high-quality production.Compared with turning processing method in the past, Product Precision that this method has system is high, the feature of excellent in efficiency, can significantly reduce product cost simultaneously.
Of the present inventionly be for the beneficial effect of turning round the die assembly of cutting check bolt moulding: utilize this die assembly, can cut check bolt main part and carry out hot upsetting moulding turning round, thereby avoid that in traditional vehicle processing, cost is high, efficiency is low and the problem of low precision, realized and turned round that to cut check bolt efficient, at a high speed and high-quality production.
Brief description of the drawings
Fig. 1 turns round to cut check bolt schematic diagram, and wherein 1 is four angle heads, and 2 for turning round the portion of cutting, and 3 is large round end, and 4 is bar portion.
Fig. 2 turns round the each operation schematic diagram of processing method of cutting check bolt.
Fig. 3 is a mould patrix schematic diagram, and wherein 11 is a mould patrix circular open, and 12 is a mould patrix bellmouth, and 13 is a mould patrix conical cavity, and 14 is a mould patrix.
Fig. 4 is a mould counterdie schematic diagram, and wherein 21 is a mould counterdie circular open, and 22 is a mould counterdie bellmouth, and 23 is a mould counterdie circular cavity, and 24 is a mould counterdie.
Fig. 5 is No. two mould patrix schematic diagrames, and wherein 31 is No. two mould patrix circular opens, and 32 is No. two mould patrix bellmouths, and 33 is chamber, No. two mould patrix sides, and 34 is No. two mould patrixes.
Fig. 6 is No. two mould counterdie schematic diagrames, and wherein 41 is No. two mould counterdie circular opens, and 42 is No. two mould counterdie bellmouths, and 43 is No. two mould counterdie circular cavities, and 44 is No. two mould counterdies.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail.
As shown in Figure 2, the present embodiment turn round the processing method of cutting check bolt, its concrete steps are carried out as follows:
First, carry out the front operation of hot upsetting, raw material is carried out to pickling, phosphatization processing, reel off raw silk from cocoons, blanking, chamfering, contracting bar, obtains treating shaping blank.Wherein, raw material is carried out to pickling, phosphatization processing, its objective is and prepare for contracting bar technique; Reel off raw silk from cocoons, according to product performance processing optimum size; Chamfering, lathe burr removing makes labor and materials better enter mould; Contracting bar, be for rolled thread operation below ready.
Then, carry out just shaping, heating blank, heating-up temperature is 800 ~ 1000 DEG C, and the blank rotary after heating is moved on in a mould and pushed, and obtains just shaping blank.The main purpose of just shaping is to utilize the shape of the mobility of metal and the die body of a mould patrix band tapering, by blank is up pushed, forms the head with tapering, thereby provides enough stocks for four jiaos of operations of follow-up upsetting.In the time of just shaping, the bottom of blank is also squeezed, and utilizes the mould shape feature of a mould counterdie, completes the moulding of the following position of the large round end of bolt blank.In the present embodiment, after first shaping, first shaping blank is removed outside bolt shank, the similar cucurbit moulding of its profile, and head is cone, and centre is spill, and the full degree at the following position of the large round end of its bolt is 80% of finished product.
Then, carry out shaping again, the first shaping blank in a mould is pushed again, obtain shaping blank again.The object of shaping is mainly that the large round end of bolt is carried out to moulding again.In the present embodiment, then after shaping, then shaping blank is except bolt is turned round the portion of cutting and four angle heads, and all the other sizes and profile complete substantially, full degree is finished product 95%.
Follow, carry out four jiaos of upsettings, shaping blank rotary moves on in No. two moulds and pushes again, and four angle heads of bolt are made in upsetting, complete large round end and the moulding of bar portion of bolt, obtain treating turning blank.
Follow, carry out deburring overlap, burr and the overlap of turning blank treated in excision.Burr or overlap are owing to there being unnecessary material to be squeezed in outside die cavity and to form by mould in preorder step under the effect of pressure, therefore must excise by burr removing frock.
Follow again, carry out turning, utilize lathe that the portion finish turning of cutting of turning round of bolt is put in place, obtain bolt semi-finished product.Because the size of turning round the portion of cutting of bolt is closely related with the design load that bolt bears torsion, therefore turning size must be carried out according to the size of design.If oversize, bolt to bear torsion just larger, electronic dynamic torque tool just easily damages, and even turns round constantly.If undersized, the torsion that bolt bears is just less, and bolts and nuts are not locking also, turns round just fracture of the portion of cutting, and does not reach the effect of locking, can bring potential safety hazard.Turning size comprises to be turned round width dimensions, the tapering size of the portion of cutting and turns round and cut portion's external diameter.
Finally, carry out subsequent treatment, bolt semi-finished product are carried out to rolled thread, be coated with locking glue, be coated with molybdenum bisuphide, finally obtain bolt finished product.In the present embodiment, rolled thread operation utilizes the rolled thread forcing press of 20 tons screw thread extrusion modling.
As shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, the present embodiment for turning round the die assembly of cutting check bolt moulding, comprise a mould and No. two moulds, a mould, No. two moulds are made up of upper die and lower die respectively, wherein:
The bottom of a mould patrix 14 is provided with mould patrix circular open 11 No. one, No. one mould patrix circular open 11 tops are provided with mould patrix bellmouth 12 No. one, the large nose end of a mould patrix bellmouth 12 is connected mutually with the top of a mould patrix circular open 11, the small bore end of a mould patrix bellmouth 12 is connected mutually with a mould patrix conical cavity 13, and a mould patrix conical cavity 13 upwards shrinks and extend to the top of a mould patrix 14.
The top of a mould counterdie 24 is provided with mould counterdie circular open 21 No. one, No. one mould counterdie circular open bottom is provided with mould counterdie bellmouth 22 No. one, the large nose end of a mould counterdie bellmouth 22 is connected mutually with the bottom of a mould counterdie circular open 21, the small bore end of a mould counterdie bellmouth 22 is connected mutually with a mould counterdie circular cavity 23, and a mould counterdie circular cavity 23 extends downwardly into the bottom of a mould counterdie 24.
The bottom of No. two mould patrixes 34 is provided with mould patrix circular open 31 No. two, No. two mould patrix circular open 31 tops are provided with mould patrix bellmouth 32 No. two, the large nose end of No. two mould patrix bellmouths 32 is connected mutually with the top of No. two mould patrix circular opens 31, the small bore end of No. two mould patrix bellmouths 32 is connected mutually with chamber, No. two mould patrix sides 33, and chamber, No. two mould patrix sides 33 extends up to the top of No. two mould patrixes 34.
The top of No. two mould counterdies 44 is provided with mould counterdie circular open 41 No. two, No. two mould counterdie circular open 41 bottoms are provided with mould counterdie bellmouth 42 No. two, the large nose end of No. two mould counterdie bellmouths 42 is connected mutually with No. two mould counterdie circular open 41 bottoms, the small bore end of No. two mould counterdie bellmouths 42 is connected mutually with No. two mould counterdie circular cavities 43, and No. two mould counterdie circular cavities 43 extend downwardly into the bottom of No. two mould counterdies 44.
Wherein, a mould patrix circular open 11 and a mould counterdie circular open 21, the large round end blank of jointly making bolt for upsetting; A mould patrix conical cavity 13 is made four angle head blanks of bolt for upsetting; A mould counterdie circular cavity 23, the bar portion blank of making bolt for upsetting; No. two mould patrix circular opens 31 and No. two mould counterdie circular opens 41, the common large round end of making bolt for upsetting; Chamber, No. two mould patrix sides 33, makes four angle heads of bolt for upsetting; No. two mould counterdie circular cavities 43, the bar portion that makes bolt for upsetting.
Although the present invention with preferred embodiment openly as above, embodiment is not of the present invention for limiting.Without departing from the spirit and scope of the invention, any equivalence of doing changes or retouching, belongs to equally the present invention's protection domain.Therefore protection scope of the present invention should be taking the application's the content that claim was defined as standard.
Claims (1)
1. for turning round a die assembly of cutting check bolt moulding, it is characterized in that: comprise a mould and No. two moulds, a mould, No. two moulds are made up of upper die and lower die respectively; Wherein,
The bottom of a mould patrix is provided with a circular open, this circular open top is provided with a bellmouth, the large nose end of this bellmouth is connected mutually with circular open top, and the small bore end of this bellmouth is connected mutually with a conical cavity, and this conical cavity upwards shrinks and extend to the top of patrix;
The bottom of No. two mould patrixes is provided with a circular open, this circular open top is provided with a bellmouth, the large nose end of this bellmouth is connected mutually with circular open top, and the small bore end of this bellmouth is connected mutually with a square chamber, and the party chamber extends up to the top of patrix;
The top of a mould counterdie, No. two mould counterdies is equipped with a circular open, circular open bottom is equipped with a bellmouth, the large nose end of bellmouth is connected mutually with circular open bottom, and the small bore end of bellmouth is all connected mutually with a circular cavity, and circular cavity all extends downwardly into the bottom of counterdie.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210095081.9A CN102601293B (en) | 2012-03-31 | 2012-03-31 | Die assembly for forming torsional lock bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210095081.9A CN102601293B (en) | 2012-03-31 | 2012-03-31 | Die assembly for forming torsional lock bolt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102601293A CN102601293A (en) | 2012-07-25 |
| CN102601293B true CN102601293B (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210095081.9A Active CN102601293B (en) | 2012-03-31 | 2012-03-31 | Die assembly for forming torsional lock bolt |
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| Country | Link |
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| CN (1) | CN102601293B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109894815A (en) * | 2019-02-22 | 2019-06-18 | 海盐恒骏精密五金有限公司 | A kind of screw production technology |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783670A (en) * | 1972-08-21 | 1974-01-08 | Eumuco Ag Fuer Maschinenbau | Apparatus for the transfer of workpieces in a multistage press for the cold deformation by means of cold extrusion and the like |
| CN2773381Y (en) * | 2004-10-20 | 2006-04-19 | 舟山市7412工厂 | Bolt fixed on thin-plate and special manufacturing die |
| CN201664727U (en) * | 2010-02-04 | 2010-12-08 | 日泰（上海）汽车标准件有限公司 | Adjustable bolt mould |
| CN201711483U (en) * | 2010-06-17 | 2011-01-19 | 鹏驰五金制品有限公司 | Turning-free molding mould for expansion bolt |
| CN201760547U (en) * | 2010-05-26 | 2011-03-16 | 上海上标汽车紧固件有限公司 | Cold forging mould for suspension bolt of saloon car body |
| CN201823861U (en) * | 2010-10-07 | 2011-05-11 | 玉环福尔加机械有限公司 | Forging die for hub bolt |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100899479B1 (en) * | 2007-08-14 | 2009-05-26 | 박노근 | Stud bolt production method |
-
2012
- 2012-03-31 CN CN201210095081.9A patent/CN102601293B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783670A (en) * | 1972-08-21 | 1974-01-08 | Eumuco Ag Fuer Maschinenbau | Apparatus for the transfer of workpieces in a multistage press for the cold deformation by means of cold extrusion and the like |
| CN2773381Y (en) * | 2004-10-20 | 2006-04-19 | 舟山市7412工厂 | Bolt fixed on thin-plate and special manufacturing die |
| CN201664727U (en) * | 2010-02-04 | 2010-12-08 | 日泰（上海）汽车标准件有限公司 | Adjustable bolt mould |
| CN201760547U (en) * | 2010-05-26 | 2011-03-16 | 上海上标汽车紧固件有限公司 | Cold forging mould for suspension bolt of saloon car body |
| CN201711483U (en) * | 2010-06-17 | 2011-01-19 | 鹏驰五金制品有限公司 | Turning-free molding mould for expansion bolt |
| CN201823861U (en) * | 2010-10-07 | 2011-05-11 | 玉环福尔加机械有限公司 | Forging die for hub bolt |
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| Publication number | Publication date |
|---|---|
| CN102601293A (en) | 2012-07-25 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20151116 Address after: 215500 building 11, 1 the Fuchun River Road, Southeast Economic Development Zone, Suzhou, Jiangsu, Changshou City Patentee after: The Land of Peach Blossoms, Changshu City auto parts and components Manufacturing Co., Ltd Address before: 215500, No. 11, the Fuchun River Road, Changshu Southeast Economic Development Zone, Suzhou, Jiangsu, Changshou City 1, China Patentee before: Changshu New Huayuan Fastener Co., Ltd. |
|
| CB02 | Change of applicant information |
Inventor after: Wang Jian Inventor before: Wang Jian Inventor before: Feng Nianqiang |
|
| CB03 | Change of inventor or designer information |