公开(公告)号：US09821365B2

公开(公告)日：2017-11-21

申请号：US14599665

申请日：2015-01-19

Applicant: C.R.F. Societa Consortile per Azioni

Inventor： Marco Colosseo ,  Daniele Bassan

IPC: B21D53/84 ,  B21D26/047

CPC classification number: B21D53/845 ,  B21D26/033 ,  B21D26/047 ,  Y10T29/49293

Abstract: In a method for manufacturing a camshaft for an internal combustion engine a metal tubular element is expanded within a mold with the aid of a fluid at high pressure fed into the tubular element and with a simultaneous axial compression of the tubular element. The cams of the camshaft are formed in subsequent steps, starting from intermediate cams and ending with end cams. In a first step of the method, the intermediate cams are formed in a first mold. In a subsequent step, the end cams are formed within auxiliary molds which surround, only throughout a predetermined length, end portions of the tubular element which project from the mold which surrounds the already formed intermediate cams. In this subsequent step, the tubular element is compressed axially by axially displacing two clamp members, which grip and surround completely, throughout a predetermined length, the end portions of the tubular element which project outwardly from the auxiliary molds.

公开(公告)号：US20150231685A1

公开(公告)日：2015-08-20

申请号：US14599665

申请日：2015-01-19

Applicant: C.R.F. Societa Consortile per Azioni

Inventor： Marco Colosseo ,  Daniele Bassan

IPC: B21D53/84 ,  B21D26/047

CPC classification number: B21D53/845 ,  B21D26/033 ,  B21D26/047 ,  Y10T29/49293

Abstract: In a method for manufacturing a camshaft for an internal combustion engine a metal tubular element is expanded within a mould with the aid of a fluid at high pressure fed into the tubular element and with a simultaneous axial compression of the tubular element. The cams of the camshaft are formed in subsequent steps, starting from intermediate cams and ending with end cams. In a first step of the method, the intermediate cams are formed in a first mould. In a subsequent step, the end cams are formed within auxiliary moulds which surround, only throughout a predetermined length, end portions of the tubular element which project from the mould which surrounds the already formed intermediate cams. In this subsequent step, the tubular element is compressed axially by axially displacing two clamp members, which grip and surround completely, throughout a predetermined length, the end portions of the tubular element which project outwardly from the auxiliary moulds.

Abstract translation: 在用于制造用于内燃机的凸轮轴的方法中，金属管状元件借助于高压进入管状元件并且同时轴向压缩管状元件而在模具内膨胀。 凸轮轴的凸轮在后续步骤中形成，从中间凸轮开始并以端部凸轮结束。 在该方法的第一步骤中，中间凸轮形成在第一模具中。 在随后的步骤中，末端凸轮形成在辅助模具中，该辅助模具仅围绕已经形成的中间凸轮的模具围绕，仅在整个预定长度上围绕管状元件的端部。 在随后的这个步骤中，管状元件通过轴向移位两个夹紧构件而被轴向压缩，夹紧构件在整个预定的长度上完全夹持并且完全围绕着从辅助模具向外伸出的管状元件的端部。

公开(公告)号：US10166592B2

公开(公告)日：2019-01-01

申请号：US14599653

申请日：2015-01-19

Applicant: C.R.F. Societa Consortile per Azioni

Inventor： Marco Colosseo ,  Daniele Bassan

IPC: B21D53/88 ,  B21D37/16 ,  C25D13/12 ,  B21D26/021

Abstract: A method for forming a sheet made of an aluminium alloy into a component of complex shape, particularly a motor-vehicle component, such as an outer panel or an inner frame of a bonnet or a door of a motor-vehicle, provides for blow-forming of the sheet, with the aid of pressurized gas, within a mould. The alloy constituting the sheet does not have superplasticity features and the sheet and/or the mould are heated to a temperature in the order of 400°-450° C. for 5XXX series alloys and 450°-500° C. and over for 6XXX and 7XXX series alloys. The maximum pressure reached by the forming gas is in the order of 20-30 bars and the time required for forming the sheet is between 40 and 150 seconds and therefore is consistent with production rates in the automotive field.

公开(公告)号：US10124397B2

公开(公告)日：2018-11-13

申请号：US14654163

申请日：2013-07-04

Applicant: C.R.F. Societa Consortile per Azioni

Inventor： Marco Colosseo ,  Daniele Bassan

IPC: B21K1/06 ,  B21D26/033 ,  B21D26/047 ,  F01L1/047 ,  F16C3/02 ,  B21D53/84 ,  F16H53/02 ,  B21D26/037

Abstract: A method for obtaining a camshaft for an internal-combustion engine having a structure made of a single piece includes obtaining the camshaft by starting from a metal tubular element. The cams are obtained by expanding the tubular element within a die using high-pressure fluid. The tubular element can have an enlarged thickness in portions that are to form the cams. Forming with high-pressure fluid can be obtained using gas or liquid (for example, water or oil) at high pressure, at room temperature or at a higher temperature. The piece obtained is subjected to thermal treatment and to a grinding operation.

公开(公告)号：US10821495B2

公开(公告)日：2020-11-03

申请号：US15635257

申请日：2017-06-28

Applicant: C.R.F. Societa Consortile per Azioni

Inventor： Daniele Bassan ,  Marco Colosseo

IPC: B21D26/021 ,  B32B15/20 ,  B32B15/085 ,  B32B27/32 ,  B32B7/04 ,  B32B27/34 ,  B32B15/088 ,  B32B15/08 ,  B21D26/059 ,  B21D53/88 ,  B32B15/14 ,  B29K307/04 ,  B29K309/08 ,  B29K623/00 ,  B29K677/00 ,  B29K705/00 ,  B29L31/30

Abstract: A component of a vehicle structure is obtained by a hot forming operation on a hybrid panel having a sheet element of light alloy and a sheet of plastic material. The hybrid panel is hot formed by pressing it against a forming surface of a mould element by a pressurized gas or by a second mould element. Following this operation, the hybrid panel assumes a configuration corresponding to the forming surface, whereas the light alloy sheet element and the plastic material sheet constituting the hybrid panel adhere to each other following softening by heat of the plastic material. Before the hot forming step, a surface of said light alloy sheet element which must contact the plastic material sheet is subjected to a roughening treatment, thereby defining surface asperities between which the plastic material of the plastic material sheet is inserted when it is softened by heat.

公开(公告)号：US10758956B2

公开(公告)日：2020-09-01

申请号：US15421542

申请日：2017-02-01

Applicant: C.R.F. Societa Consortile per Azioni

Inventor： Marco Colosseo ,  Daniele Bassan

IPC: B21B1/12 ,  B21H8/02 ,  B21H8/00 ,  B21B1/22 ,  B21B1/24 ,  B21B27/02

Abstract: Described herein is a method for rolling metal sheets of variable thickness. The method makes it possible to impress, during rolling, any distribution of areas of increased thickness within a figure corresponding to the plane development of a motor-vehicle component prior to the pressing operation. Impression of the desired distribution of areas of increased thickness envisages simultaneous impression, during rolling, of a further distribution of areas of increased thickness, or compensation areas.

公开(公告)号：US20150231686A1

公开(公告)日：2015-08-20

申请号：US14599653

申请日：2015-01-19

Applicant: C.R.F. Societa Consortile per Azioni

Inventor： Marco Colosseo ,  Daniele Bassan

IPC: B21D53/88 ,  B21D37/16 ,  C25D13/12 ,  B21D26/021

CPC classification number: B21D53/88 ,  B21D26/021 ,  B21D37/16 ,  C25D13/12 ,  Y10T29/49622

Abstract: A method for forming a sheet made of an aluminium alloy into a component of complex shape, particularly a motor-vehicle component, such as an outer panel or an inner frame of a bonnet or a door of a motor-vehicle, provides for blow-forming of the sheet, with the aid of pressurized gas, within a mould. The alloy constituting the sheet does not have superplasticity features and the sheet and/or the mould are heated to a temperature in the order of 400°-450° C. for 5XXX series alloys and 450°-500° C. and over for 6XXX and 7XXX series alloys. The maximum pressure reached by the forming gas is in the order of 20-30 bars and the time required for forming the sheet is between 40 and 150 seconds and therefore is consistent with production rates in the automotive field.

Abstract translation: 一种将由铝合金制成的片材形成为复杂形状的部件的方法，特别是机动车辆部件，例如机动车辆的发动机罩或门的外板或内框架， 借助于加压气体在模具内形成片材。 构成片材的合金不具有超塑性特征，并且片和/或模具被加热到对于5XXX系列合金和450°-500℃的400°-450℃的温度，并且对于6XXX 和7XXX系列合金。 成形气体达到的最大压力为20-30巴，制成片材所需的时间为40至150秒，因此与汽车领域的生产率一致。