CN102581204B - Turriform forming process of internal and external rings of first-generation hub bearing - Google Patents

Turriform forming process of internal and external rings of first-generation hub bearing Download PDF

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Publication number
CN102581204B
CN102581204B CN201210033665.3A CN201210033665A CN102581204B CN 102581204 B CN102581204 B CN 102581204B CN 201210033665 A CN201210033665 A CN 201210033665A CN 102581204 B CN102581204 B CN 102581204B
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China
Prior art keywords
ring
turriform
internal
external
forging
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CN201210033665.3A
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Chinese (zh)
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CN102581204A (en
Inventor
周红刚
石磊
尹晓波
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黄石哈特贝尔精密锻造有限公司
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Publication of CN102581204A publication Critical patent/CN102581204A/en
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Abstract

The invention relates to a turriform forming process of internal and external rings of a first-generation hub bearing. The forming process comprises blanking, upsetting, forming, separating of internal and external rings, and punching of the internal rings. The forming steps are as follows: 1) matching an internal ring type suitable for turriform forging: designing the dimension of a small inside diameter of an external ring, wherein a rolling ratio of the external ring is 1.15-1.5, and an outside diameter of an internal ring is not larger than the small inside diameter of the external ring, so that the internal ring is encircled by the external ring; and realizing turriform forging to obtain a turriform forged piece with a total height of 45-55mm; and 2) performing the turriform process design: designing the internal ring, uniformly distributing finishing allowance according to the part dimension of the internal ring of a finished product to design a forged piece, increasing the thickness of a large capped edge of the internal ring, obtaining the volume of the fully formed forged piece after designing the thickness of a material core, and then gradually calculating the process dimensions for blanking and upsetting. Compared with the prior art, the turriform forming process disclosed by the invention has the beneficial effects that the internal and external rings are forged in one punch stroke by reasonably designing the turriform forged piece, and the material utilization ratio is greatly improved.

Description

The turriform moulding process of wheel hub bearing Internal and external cycle
Technical field
The present invention relates to a kind of turriform moulding process of the wheel hub bearing Internal and external cycle that is applicable to manufacture on Balance mechanism.
Background technology
Wheel hub bearing is the important walking parts of automobile, and there are to strict requirement in the life-span of bearing and reliability.Bearing is mainly comprised of inner ring, steel ball, seal and outer ring.This series bearing inner and outer ring blank must adopt forging, particularly outer ring, and a lot of high-grade bearings also append cold rolling technology moulding.The Forging Technology of bearing ferrule blanks all adopts the process of forging separately on hot headers at present: a stroke is produced a lasso (no matter being inner ring or outer ring), in this technique Internal and external cycle forming process, all can produce material core, causes waste.
Because this series axis bearing outer-ring is furnished with two inner rings, so the aspect ratio plain bearing of outer ring is high a lot, and single forging also exists certain difficulty conventionally.Therefore will add inner ring moulding together, the height overall of profiled member increases again much so, and forging difficulty is larger.
Therefore how designing Forging Technology is the key issue that technical staff will solve, and technological design is bad or unreasonable, cannot stably on hot headers, realize normal production.The traditional process for forging of Internal and external cycle, as depicted in figs. 1 and 2, includes blanking, jumping-up, moulding, punching at present.
Summary of the invention
Technical problem to be solved by this invention is the turriform moulding process that proposes wheel hub bearing Internal and external cycle, this technique can save material to greatest extent, reduce costs, improve device efficiency, Internal and external cycle moulding is designed to disjunctor, adopt turriform forging molding process, once complete Internal and external cycle and forge on hot headers, a stroke is produced an outer ring and an inner ring simultaneously.
The problem that the present invention is the above-mentioned proposition of solution is adopted solution to be: wheel hub bearing Internal and external cycle turriform moulding process, include following processing step: blanking, jumping-up, moulding, Internal and external cycle separation and inner ring punching, is characterized in that described moulding concrete steps are:
1) mate the inner ring model that suitable turriform is forged
First design the little internal diameter size of outer ring, rolling ratio in outer ring is 1.15~1.5, and the external diameter of inner ring is less than or equals the little internal diameter size of outer ring, to be included in outer ring, to realize turriform and forges, and the height overall of turriform part is 45mm~55mm;
2) turriform technological design
Carry out inner ring design, according to the accessory size of finished product inner ring, allowance uniform distribution is designed to forging, increase the large-flange thickness of inner ring, according to cold rolling forming principle, corresponding outer ring forging ' s block dimension is shaped, to determine the shape of turriform part, then design and can obtain the forging volume of moulding when abundant after the thickness of honest material core, and then progressively retrodict to calculate and forge blanking and each process of jumping-up.
Press such scheme, the outer ring external diameter profile of described turriform part is stepped, and make the wall thickness of two ends up and down of outer ring even, to prepare for cold rolling, outer ring is when being ejected simultaneously, and the frictional contact surface of turriform part and die is divided into two sections, after the upper end of outer ring is ejected, there is not friction in its lower end and die, to reduce ejecting force, reduce die wear simultaneously.
Press such scheme, the large-flange height of selected inner ring is preferably 9~15mm, to reduce the height overall of whole turriform part, reduces and forges difficulty.
Compared with prior art, the invention has the beneficial effects as follows:
1, appropriate design turriform forging, makes full use of 4 stations of hot headers, and (wheel hub lasso forges and only uses 3 stations conventionally) completes two forged articles of Internal and external cycle in a stroke; 2, stock utilization significantly improves, and in fact this technique be molded into inner ring by the material core of outer ring, and inner ring material core is very little, and the waste material of generation is few, is a kind of conventional design that breaks through.
Accompanying drawing explanation
Fig. 1 is a kind of outer ring tradition forging molding process flow chart wherein;
Fig. 2 is the inner ring forging molding process flow chart that Fig. 1 is corresponding;
Fig. 3 is process chart of the present invention.
Specific embodiments
Below in conjunction with accompanying drawing, technical process of the present invention is described further, but can not be construed as limiting the invention, and the present invention all the other do not explain that part is all consistent with prior art.
Wheel hub bearing Internal and external cycle tower forging molding technique, as shown in Figure 3, includes following processing step:
1) blanking: according to the accessory size design inner ring forging of finished product inner ring, wherein, inner ring outside dimension is 53.8mm, the height of large-flange is 14.8mm, mate the size that can further design turriform forging after suitable outer ring size, the height of turriform forging is 49mm, after choosing the thickness of certain material core, can obtain the sufficient forging volume of moulding, material core thickness is 8mm, and then calculate bar diameter and length, guarantee bar draw ratio 0.8-1.2, in the present embodiment, bar diameter is 50mm, and length is 61mm;
2) jumping-up: upset diameter is less than forging molding outside dimension 0.5-1 millimeter;
3) moulding: this station is core of the present invention, it is good that turriform designs, and moulding is achieved;
Moulding process concrete steps of the present invention are:
A) mate the inner ring model that suitable turriform is forged
First the little internal diameter size that designs outer ring is 53.8mm, and rolling ratio in outer ring is 1.3, and the external diameter of inner ring is less than the little internal diameter size of outer ring, to be included in outer ring, to realize turriform and forges, and the height overall of turriform part is 49mm;
B) turriform technological design
Carry out inner ring design, according to the accessory size of finished product inner ring, allowance uniform distribution is designed to forging, increase the large-flange thickness of inner ring, outer ring size also just can be shaped on the basis of inner ring sizing, according to cold rolling forming principle, corresponding outer ring forging ' s block dimension is shaped, to determine the shape of turriform part, design again and can obtain the forging volume of moulding when abundant after the thickness of honest material core, and then progressively retrodict to calculate and forge blanking and each process of jumping-up.
The outer ring external diameter profile of described turriform part is stepped, and make the wall thickness of two ends up and down of outer ring even, to prepare for cold rolling, outer ring is when being ejected simultaneously, the frictional contact surface of turriform part and die is divided into two sections, and after the upper end of outer ring is ejected, its lower end and die do not exist friction, to reduce ejecting force, reduce die wear simultaneously.
The large-flange height of selected inner ring is preferably 14.8mm, to reduce the height overall of whole turriform part, reduces and forges difficulty.
4) Internal and external cycle is separated: turriform part is at separation station stamping-out, and outer ring completes, and inner ring blank completes;
5) inner ring punching: last station washes out the material core of inner ring blank, completes after inner ring and forges and finish.
The four station hot headers that above-mentioned technique is applicable, under the transmission of manipulator, a stroke completes two products.The tower forging process that is different from conventional bearing is exactly that this series bearing height is high, has broken through the limit of equipment, but through accurate Calculation and type selecting, can realize forging.

Claims (2)

1. wheel hub bearing Internal and external cycle turriform moulding process, includes following processing step: blanking, jumping-up, moulding, Internal and external cycle separation and inner ring punching, is characterized in that described step is:
1) mate the inner ring model that suitable turriform is forged
First design the little internal diameter size of outer ring, rolling ratio in outer ring is 1.15~1.5, and the external diameter of inner ring is less than or equals the little internal diameter size of outer ring, to be included in outer ring, to realize turriform and forges, and the height overall of turriform part is 45mm~55mm;
2) turriform technological design
Carry out inner ring design, according to the accessory size of finished product inner ring, allowance uniform distribution is designed to forging, increase the large-flange thickness of inner ring, according to cold rolling forming principle, corresponding outer ring forging ' s block dimension is shaped, to determine the shape of turriform part, then design and can obtain the forging volume of moulding when abundant after the thickness of honest material core, and then progressively retrodict to calculate and forge blanking and each process of jumping-up; The outer ring external diameter profile of described turriform part is stepped, and make the wall thickness of two ends up and down of outer ring even, to prepare for cold rolling, outer ring is when being ejected simultaneously, the frictional contact surface of turriform part and die is divided into two sections, and after the upper end of outer ring is ejected, its lower end and die do not exist friction, to reduce ejecting force, reduce die wear simultaneously.
2. by wheel hub bearing Internal and external cycle turriform moulding process claimed in claim 1, the large-flange height that it is characterized in that selected inner ring is 9~15mm, to reduce the height overall of whole turriform part, reduces and forges difficulty.
CN201210033665.3A 2012-02-15 2012-02-15 Turriform forming process of internal and external rings of first-generation hub bearing CN102581204B (en)

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CN103341577B (en) * 2013-07-19 2016-05-25 黄石哈特贝尔精密锻造有限公司 The cold rolling moulding process of asymmetric shape and the enclosed cold rolling to model mould of hub bearing outer ring
CN103406728A (en) * 2013-08-07 2013-11-27 泰州广顺汽车部件有限公司 Method for manufacturing hub bearings of automobiles
CN105992660B (en) * 2014-02-14 2018-10-30 日本精工株式会社 The manufacturing method of endless member
CN104112063A (en) * 2014-06-06 2014-10-22 武汉理工大学 Analysis designing method for rotary forging non-rotation upper die
CN104493060A (en) * 2014-12-15 2015-04-08 芜湖金龙模具锻造有限责任公司 Method for forging bearing ring
CN105057556B (en) * 2015-08-14 2017-03-29 浙江五洲新春集团股份有限公司 A kind of forging molding process of bearing ring
CN105127354B (en) * 2015-08-18 2018-08-03 黄石哈特贝尔精密锻造有限公司 A kind of lasso disjunctor forging rushes turgor pressure side new process
CN105215258A (en) * 2015-11-17 2016-01-06 中航工业哈尔滨轴承有限公司 A kind of forging method reducing bearing fine crack defective proportion
CN105583588B (en) * 2016-03-24 2017-12-12 哈尔滨汽车轴承有限公司 A kind of processing method for taper roll bearing Internal and external cycle
CN106166592B (en) * 2016-08-19 2018-07-24 浙江中集铸锻有限公司 Tapered roller bearing ring forges continuous mould
CN106111877B (en) * 2016-08-19 2018-07-24 浙江中集铸锻有限公司 Wheel hub inner ring forges continuous mould
CN107186140B (en) * 2017-06-30 2019-06-28 陕西宏远航空锻造有限责任公司 A kind of in-flanges tubular high temperature alloy product manufacture method

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