CN101920306A - Process for forming T-shaped welded nut by multistage cold former - Google Patents
Process for forming T-shaped welded nut by multistage cold former Download PDFInfo
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- CN101920306A CN101920306A CN2009101120781A CN200910112078A CN101920306A CN 101920306 A CN101920306 A CN 101920306A CN 2009101120781 A CN2009101120781 A CN 2009101120781A CN 200910112078 A CN200910112078 A CN 200910112078A CN 101920306 A CN101920306 A CN 101920306A
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- wheel rim
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Abstract
The invention discloses a process for forming a T-shaped welded nut by a multistage cold former, comprising the following steps of: cutting; shaping; preforming a rim and a flange; preforming the rim and a weld pin; completely forming the rim and the weld pin; punching; trimming, and the like. In the invention, coil wire rods are fed by an automatic feeding device in an accurate stepping way, then made in to finished products in one step through continuous manufacturing procedures by using a mould, and the products are formed fast and accurately in the continuous forging process; and therefore, the invention realizes the automation and the standardization of production and has faster production speed and high utility rate of wire rods (blanks), not only enhances the production efficiency and the utility ratio of materials, but also reduces the labor intensity of workers, and further improves the strength, the rigidity, the accuracy and the appearance quality of the product and greatly reduces the cost; in addition, the invention has good operation safety and social environmental protection, meets the manufacturing requirements for decreasing waste materials and enhances the product quality and the economic efficiency.
Description
Technical field
The invention belongs to the metal forging manufacture field, particularly relate to a kind of with the technology of element coil material by forming T-shaped welded nut by multistage cold former.
Background technology
This series products of T shape welded nut belongs to the five metals part, is widely used in aviation, automobile, and industries such as tractor, internal vapor depot progressively strengthens the dynamics of production domesticization parts in the hope of reducing purchase cost, and demand is very big, and requiring in large quantity, producer can satisfy.
Traditional handicraft (as shown in Figure 1): the application punch press will be pulled the gold material and carry out Sheet Metal Forming Technology machine-shapings such as multistep pull and stretch, punching, shaping, compacting leg (W of Figure 1A), blanking, the T shape welded nut of machine-shaping shown in Figure 1A, and this technology has following defective:
(1) when welding sealing-off very easily: in order to suppress leg W (shown in Figure 1A), need to extrude recessed circle V (shown in Figure 1A) on the flange of T shape welded nut, this recessed circle V causes not reaching the preceding leg W of welding temperature will very easily be produced the sealing-off phenomenon by conquassation;
(2) stock utilization is extremely low: the material use situation (remove 4 and be required product, 1,2,3 are waste material) that this traditional handicraft can be described by Fig. 1;
(3) profile and size are bad: can produce very big pull and stretch chamfering during the flange pull and stretch and cause outward appearance and size bad (R of Figure 1A);
(4) the plate price is expensive, and production efficiency is low, blanking die rapid wear, processing cost height.Labour intensity is big, and Safety and Environmental Protection is poor.
(5) precision is relatively poor, and flatness, concentricity, intensity etc. all do not have guarantee.
Summary of the invention
At the above-mentioned background technological deficiency, it is a kind of with the technology of element coil material by forming T-shaped welded nut by multistage cold former that main purpose of the present invention is to provide, this technology can make the production technology of T shape welded nut link up, realize automation, the standardization of production, has speed of production faster, and the utilization rate height of wire rod (stock) reaches the manufacturing requirement that reduces waste material.
For achieving the above object, solution of the present invention is:
The present invention is a kind of technology of forming T-shaped welded nut by multistage cold former, and it may further comprise the steps:
(1) blank:, cut mould and block stock by the automatic feeding feeding;
(2) shaping: make actual required station number according to shape of product and the stressed situation of mould, planish stock and cut face;
(3) wheel rim and flange preparation moulding: compound upsetting squeeze becomes " mushroom " great wheel edge and flange preform;
(4) wheel rim and leg preparation moulding: carry out hole and wheel rim, flange, the preceding preparation upsetting of leg moulding;
(5) the complete moulding of wheel rim and leg: realize that T shape welded nut wheel rim, flange, leg moulding and the importing of two ends face cause the gross weight moulding;
(6) punching is cut edge: with the gross weight in preformed hole dash remove to required hole dimension and cut edge to institute must a wheel rim profile and a size.
Adopt the above multi-station cold-heading machine equipment of 2 stations or 2 stations that wire rod is passed through the mould cold-heading molding in the step (2).
Punching is cut edge and is adopted punching side cut set composite in the step (6), punching is finished with the same again station of cutting edge be processed into possibility.
Be formed into step (6) punching side cut from step (3) wheel rim and flange preparation, after stock is ejected, be it to be moved into next station, and press from both sides a retaining lip location stock that is provided with, go into when transhipment is pressed from both sides because of flange thickness is thin in case eject stock by transhipment by the transhipment folder.
After adopting above-mentioned technology, the present invention mainly be with the element coil material by automatic feeding with accurate step-by-step system feeding, then by mould through cutting off, shaping, wheel rim and flange preparation moulding, wheel rim and leg preparation moulding, the complete moulding of wheel rim and leg, the coherent procedure that punching is cut edge accomplishs without any letup product, product moulding quickly and accurately in continuous forging process, realize the automation of production, standardization, has speed of production faster, and the utilization rate height of wire rod (stock), production efficiency and stock utilization have not only been improved, also alleviated labor strength, improved the intensity of product, hardness, precision and presentation quality, reduce cost significantly, had good processing safety and social enviroment protection simultaneously.This technology is a kind of production method that integrates high speed, automation, standardizes,
Description of drawings
Fig. 1 is the processing schematic diagram of tradition with sheet-metal press working processing T shape welded nut;
Figure 1A is the schematic diagram of tradition with sheet metal blanking processing T shape welded nut;
Figure 1B is the schematic diagram of multi-station cold-heading processing T shape welded nut of the present invention;
Fig. 2 A-Fig. 2 G is the flow chart (now illustrating this technology with 6 stations) of each step of T shape welded nut multi-station cold-heading technology of the present invention;
Fig. 3 is punching side cut set composite figure of the present invention;
Fig. 4 A, Fig. 4 B are front view and the cutaway views that pinches the transhipment folder that stock uses of the present invention.
The specific embodiment
Please refer to Fig. 2, the present invention cuts edge and adds man-hour through cut-out, shaping, preparation moulding, wheel rim and leg preparation moulding, wheel rim and leg moulding, punching with the element coil material, have self-feeding therebetween, operation such as pinch automatically, before explanation manufacturing process of the present invention, to self-feeding, an explanation is done in operations such as automatic clamping and conveying device earlier.
A, self-feeding:
The cold headers automatic feeding mainly includes: elements such as cam, charging rocking bar, ratchet, ratchet and conveying wheel.Cam drives the charging rocking bar makes ratchet start ratchet rotate an angle θ, when this ratchet rotates θ, conveying wheel will rotate the θ angle and feeding synchronously, then conveying wheel will be divided into 2 π/branch feedings such as θ, if effective working diameter of conveying wheel is D, then each feed length is π D ÷ (2 π/θ)=D θ/2.
If the volume of T shape welded nut the 5th stock (5B) is V, the diameter of wire rod is d, and feed length is l,
V=π d then
2So/4 * l is l=4v/ π d
2
Because feed length is D θ/2,
So D θ/2=4v/ π d
2
Be θ=8v/ π d
2D
So, as long as with related data for the people, just know θ numerical value, so, just can make feeding accurate by the accurate rotational angle θ of control feeding rocking arm.
B, pinch automatically:
In continuous forging process, for cooperating automatic production, so in the production process, need possess the function that pinches automatically.For this reason, in each production procedure, being equipped with special-purpose transhipment folder 10 (shown in Fig. 4 A, Fig. 4 B), as the linking between each flow process, and is the operation requirement that cooperates variant forging flow process, and these special fixtures can divide two kinds of translation anchor clamps and turnover fixtures.
1) translation anchor clamps: in the forging process, make stock keep same orientation to enter a time flow process, use this translation anchor clamps.
2) turnover fixture: in the forging process, need make stock turn over turnback, when changing its original orientation and entering a time flow process, use this turnover fixture.Its principle is to lead the central gear engagement of gear and equipment clamping and conveying device in the central shaft installing one of transhipment folder, and when the anchor clamps translation, this is led gear and is driven to rotate, thereby transhipment folder Rotate 180 degree is to meet arts demand.
After understanding above-mentioned automation mechanized operation mode, consistency and novelty that can clearer this production procedure of discovery be described as follows one by one with regard to each flow process now:
The present invention is the technology of forming T-shaped welded nut by multistage cold former, and it comprises following processing step:
(1) blank: shown in Fig. 2 A, at first be cutting die mouth in the element coil material is sent into step-by-step system by the automatic feeding of multi-station cold-heading molding machine, by outer cutter wire rod cut off then that blank AB as shown in Figure 2.Cut off the outer cutter holder in back and clip the die orifice 1D that the 1st punch die is delivered in blank AB translation;
(2) shaping: shown in Fig. 2 B, the die orifice 1D that the 1st pediment stick 1P is pressed into the 1st punch die with blank AB carries out cold-heading and is shaped to stock 1B, stock 1B is ejected the die orifice 1D of the 1st punch die by the 1st backlash rod 1A, enter the 1st transhipment folder, again by the 1st transhipment clip stock 1B upset deliver to the 2nd punch die mouthful 2D;
Shown in Fig. 2 C, the die orifice 2D that the 2nd pediment stick 2P is pressed into the 2nd punch die with stock 1B carries out cold-heading and is shaped as stock 2B, by the 2nd backlash rod 2A stock 2B is ejected the die orifice 2D of the 2nd punch die, enter the 2nd transhipment folder, clip the die orifice 3D that the 3rd punch die is delivered in stock 2B translation by the 2nd transhipment again;
(3) wheel rim and flange preparation moulding: shown in Fig. 2 D, the die orifice 3D that the 3rd pediment stick 3P is pressed into the 3rd punch die with stock 2B carries out wheel rim and the flange preparation is shaped to stock 3B, stock 3B is ejected the die orifice 3D of the 3rd punch die by the 3rd backlash rod 3A, enter the 3rd transhipment folder, clip the die orifice 4D that the 4th punch die is delivered in stock 3B translation by the 3rd transhipment again;
(4) wheel rim and leg preparation moulding: shown in Fig. 2 E, the 4th pediment stick 4P is pressed into the 4th punch die 4D with stock 3B to carry out the preparation of wheel rim and leg and is shaped to stock 4B, stock 4B is ejected the die orifice 4D of the 4th punch die by the 4th backlash rod 4A, enter the 4th transhipment folder, clip the die orifice 5D that the 5th punch die is delivered in stock 4B translation by the 3rd transhipment again;
(5) the complete moulding of wheel rim and leg: shown in Fig. 2 F, the 5th pediment stick 5P is pressed into stock 4B that the 5th punch die 5D carries out wheel rim and leg is fully shaped to stock 5B, stock 5B is ejected the die orifice 5D of the 5th punch die by the 5th backlash rod 5A, enter the 5th transhipment folder, clip the die orifice 6D that the 6th punch die is delivered in stock 5B upset translation by the 5th transhipment again;
(6) punching is cut edge: shown in Fig. 2 G, the 6th pediment stick 6P is pressed into the 6th punch die 6D with stock 5B and carries out the punching side cut, finished product 6B, hit 6X through the 6Z of punching side cut set composite (as shown in Figure 3) and promote to be transferred band after 6H and 6K eject 6B and deliver to the check hopper, its gross weight thrusts the back by 6A and delivers to the waste material bucket from being transferred band after the 6P endoporus is discharged.
In the present invention, be formed into step (6) punching side cut from step (3) wheel rim and flange preparation, after stock is ejected, be it to be moved into next station by transhipment folder 10 (shown in Fig. 4 A, Fig. 4 B), and by transporting a retaining lip 101 location stocks that folder is provided with, in case eject when stock goes into to transport folder because of flange thickness is thin.
In a word, simple to operate, safety that the present invention uses, the stock utilization height, technology of the present invention can make the production technology of T shape welded nut (shown in Figure 1B) link up, not at recessed circle V (shown in Figure 1A), can be applicable to the T shape welded nut and the processing of wheel rim welded nut of various different size types simultaneously with T shape welded nut that the technology commonly used produces.This technology has been opened up the T shape welded nut field of multi-station cold-heading molding machined application at home, has filled up domestic blank, has alleviated domestic steel circumstances in short supply simultaneously.
Claims (4)
1. the technology of a forming T-shaped welded nut by multistage cold former, it is characterized in that: it may further comprise the steps:
(1) blank:, cut mould and block stock by the automatic feeding feeding;
(2) shaping: make actual required station number according to shape of product and the stressed situation of mould, planish stock and cut face;
(3) wheel rim and flange preparation moulding: compound upsetting squeeze becomes " mushroom " great wheel edge and flange preform;
(4) wheel rim and leg preparation moulding: carry out hole and wheel rim, flange, the preceding preparation upsetting of leg moulding;
(5) the complete moulding of wheel rim and leg: realize that T shape welded nut wheel rim, flange, leg moulding and the importing of two ends face cause the gross weight moulding;
(6) punching is cut edge: with the gross weight in preformed hole dash remove to required hole dimension and cut edge to institute must a wheel rim profile and a size.
2. the technology of forming T-shaped welded nut by multistage cold former as claimed in claim 1 is characterized in that: adopt the above multi-station cold-heading machine equipment of 2 stations or 2 stations that wire rod is passed through the mould cold-heading molding in the step (2).
3. the technology of forming T-shaped welded nut by multistage cold former according to claim 1, it is characterized in that: punching is cut edge and is adopted punching side cut set composite in the step (6), punching is finished with the same again station of cutting edge be processed into possibility.
4. the technology of forming T-shaped welded nut by multistage cold former according to claim 1, it is characterized in that: be formed into step (6) punching side cut from step (3) wheel rim and flange preparation, after stock is ejected, be it to be moved into next station by the transhipment folder, and by transporting the retaining lip location stock that folder is provided with, in case eject when stock goes into to transport folder because of flange thickness is thin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101120781A CN101920306A (en) | 2009-06-17 | 2009-06-17 | Process for forming T-shaped welded nut by multistage cold former |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101120781A CN101920306A (en) | 2009-06-17 | 2009-06-17 | Process for forming T-shaped welded nut by multistage cold former |
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| CN101920306A true CN101920306A (en) | 2010-12-22 |
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| CN2009101120781A Pending CN101920306A (en) | 2009-06-17 | 2009-06-17 | Process for forming T-shaped welded nut by multistage cold former |
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Cited By (14)
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| CN102335713A (en) * | 2011-07-01 | 2012-02-01 | 厦门恒耀金属有限公司 | Process and special device for integrally forming convex navel nut for riveting by using wire rods |
| CN102357627A (en) * | 2011-10-12 | 2012-02-22 | 章升谊 | Method for machining valve spring retainer by continuous cold heading once near net shape forming |
| CN102601195A (en) * | 2012-03-13 | 2012-07-25 | 中国重汽集团济南动力有限公司 | Pier thickness stamping process of separated pull ring and pier thickness stamping die |
| CN102784877A (en) * | 2011-05-20 | 2012-11-21 | 常德裕丰紧固件有限公司 | Heading process of stainless steel rivet nut |
| CN102825464A (en) * | 2012-09-17 | 2012-12-19 | 赵伯铭 | Device for producing and processing butterfly screw nuts |
| CN104061222A (en) * | 2014-07-01 | 2014-09-24 | 广东志高空调有限公司 | Nut and manufacturing method thereof |
| CN104094016A (en) * | 2011-12-28 | 2014-10-08 | 罗伯特·博世有限公司 | Divided, blanking member for the purpose of blanking transverse elements for use in a drive belt for a continuously variable transmission |
| CN104128548A (en) * | 2013-07-17 | 2014-11-05 | 国家电网公司 | Cushion die for forging sleeve with skirt portion and die component using cushion die |
| CN106640909A (en) * | 2016-12-26 | 2017-05-10 | 重庆协成五金制造有限公司 | Nut plate mounting device and punching process |
| CN107511447A (en) * | 2017-10-25 | 2017-12-26 | 苏州华丰不锈钢紧固件有限公司 | A kind of nut Sheet Metal Forming Technology |
| CN111001748A (en) * | 2020-01-08 | 2020-04-14 | 芜湖永辉汽车紧固件有限公司 | Nut cold heading forming and trimming all-in-one machine |
| CN111250646A (en) * | 2020-01-19 | 2020-06-09 | 湖南莲港紧固件有限公司 | Red heading device and red heading process for stainless steel rivet nut |
| CN111822639A (en) * | 2020-07-13 | 2020-10-27 | 浙江明泰控股发展股份有限公司 | Machining die assembly of eccentric screw sleeve and machining method of machining die assembly |
| CN111940670A (en) * | 2020-07-23 | 2020-11-17 | 宾科汽车紧固件（昆山）有限公司 | Method for forming welded nut |
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2009
- 2009-06-17 CN CN2009101120781A patent/CN101920306A/en active Pending
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| CN102784877B (en) * | 2011-05-20 | 2015-01-07 | 常德裕丰紧固件有限公司 | Heading process of stainless steel rivet nut |
| CN102784877A (en) * | 2011-05-20 | 2012-11-21 | 常德裕丰紧固件有限公司 | Heading process of stainless steel rivet nut |
| CN102335713A (en) * | 2011-07-01 | 2012-02-01 | 厦门恒耀金属有限公司 | Process and special device for integrally forming convex navel nut for riveting by using wire rods |
| CN102357627A (en) * | 2011-10-12 | 2012-02-22 | 章升谊 | Method for machining valve spring retainer by continuous cold heading once near net shape forming |
| CN104094016B (en) * | 2011-12-28 | 2016-04-27 | 罗伯特·博世有限公司 | For being punched in the split type die cutting of the lateral direction element used in the driving belt of stepless speed variator |
| CN104094016A (en) * | 2011-12-28 | 2014-10-08 | 罗伯特·博世有限公司 | Divided, blanking member for the purpose of blanking transverse elements for use in a drive belt for a continuously variable transmission |
| CN102601195A (en) * | 2012-03-13 | 2012-07-25 | 中国重汽集团济南动力有限公司 | Pier thickness stamping process of separated pull ring and pier thickness stamping die |
| CN102825464A (en) * | 2012-09-17 | 2012-12-19 | 赵伯铭 | Device for producing and processing butterfly screw nuts |
| CN104128548A (en) * | 2013-07-17 | 2014-11-05 | 国家电网公司 | Cushion die for forging sleeve with skirt portion and die component using cushion die |
| CN104128548B (en) * | 2013-07-17 | 2017-05-03 | 国家电网公司 | Cushion die for forging sleeve with skirt portion and die component using cushion die |
| CN104061222A (en) * | 2014-07-01 | 2014-09-24 | 广东志高空调有限公司 | Nut and manufacturing method thereof |
| CN106640909A (en) * | 2016-12-26 | 2017-05-10 | 重庆协成五金制造有限公司 | Nut plate mounting device and punching process |
| CN107511447A (en) * | 2017-10-25 | 2017-12-26 | 苏州华丰不锈钢紧固件有限公司 | A kind of nut Sheet Metal Forming Technology |
| CN107511447B (en) * | 2017-10-25 | 2019-07-23 | 苏州华丰不锈钢紧固件有限公司 | A kind of nut Sheet Metal Forming Technology |
| CN111001748A (en) * | 2020-01-08 | 2020-04-14 | 芜湖永辉汽车紧固件有限公司 | Nut cold heading forming and trimming all-in-one machine |
| CN111250646A (en) * | 2020-01-19 | 2020-06-09 | 湖南莲港紧固件有限公司 | Red heading device and red heading process for stainless steel rivet nut |
| CN111250646B (en) * | 2020-01-19 | 2022-02-22 | 湖南莲港紧固件有限公司 | Red heading device and red heading process for stainless steel rivet nut |
| CN111822639A (en) * | 2020-07-13 | 2020-10-27 | 浙江明泰控股发展股份有限公司 | Machining die assembly of eccentric screw sleeve and machining method of machining die assembly |
| CN111940670A (en) * | 2020-07-23 | 2020-11-17 | 宾科汽车紧固件（昆山）有限公司 | Method for forming welded nut |
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Open date: 20101222 |