CN1890035A

CN1890035A - Method and device for forming an endless metal belt provided with a surface profile

Info

Publication number: CN1890035A
Application number: CNA200480036332XA
Authority: CN
Inventors: 科内利斯·亨德里克斯·玛丽亚·范奥伊尔斯霍特; 约翰尼斯·阿德里安斯·玛丽亚·弗美尔; 约翰尼斯·亨德利克斯·范利特; 雷尼尔·西蒙·安东尼厄斯·努伊腾
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2003-12-08
Filing date: 2004-12-07
Publication date: 2007-01-03
Anticipated expiration: 2024-12-07
Also published as: NL1024968C2; WO2005053867A2; WO2005053867A3; CN100469469C; CN101497083A; CN101497083B; JP4839222B2; JP2007515294A

Abstract

Method for forming an endless metal belt (10) provided with a surface profile, in particular intended for use in a push belt, in which the belt (10) in a first step is fitted in unrolled form over at least two rotatable supporting rolls (6, 7), in a second step is positioned between two rotatable rolling rolls (7, 11) located opposite one another, and in a third process step is subjected to a rolling force (Fu) exerted between the rolling rolls (7, 11) for a number of revolutions of the belt (10) which is imposed by at least one of the rolls (6, 7, 11), in which method at least one of the two rolling rolls (7, 11), specifically the profiling roll (7), is provided with a surface profile. A device for forming such a belt, a profiling roll intended for use in said device and a push belt produced by said method are also disclosed.

Description

Formation has the method and apparatus of the endless metal belt of surface profile

Technical field

The formation that preamble limited that the present invention relates to claim 1 has the method for the endless metal belt (continous metal strip) of surface profile.The invention still further relates to the device that can be used for realizing this method, relate to thereby formed band, and relate to the pressure zone that is provided with such band.

Background technology

At the known pressure zone of the buncher that for example is used for automobile, band is used as the parts of tension element, and wherein said tension element comprises a plurality of such bands that radially pile up.Pressure zone and such speed changer are substantially as can be known by patent publication us EP-A-0014014 for example, and especially are used in and take advantage of in people's car.

By roll a slice sheet material with form pipe and in the joint with its soldering sealing, thereby and cut into ring then and produce above-mentioned band.Then, in order to make this band soft, this ring is become the relatively little thickness of expectation by rolling.Then, band is set the circumferential size of expectation exactly and is stood repeatedly heat treatment then at last.During production and processing, at least one main body sidepiece of band, promptly radially inwardly towards the surface, promptly inboard, and/or radially outward towards the surface, promptly the outside is provided with surface profile, and it is used for supply of the contact position between two bands and conveyor lubricant when pressure zone is operated, and the shape of profile has remarkable influence to the Frotteurism of described contact position.Known profile comprises the flank of protrusion, their arranged crosswise, and on the respective side portion of band circumferentially being provided with at angle with respect to band.Be provided with the profile shell of instead (bearing) the profile groove by circumferential rolling, exert pressure simultaneously, and produce described profile at the main body sidepiece upper edge band of being with.

Summary of the invention

The objective of the invention is to simplify the production process of band.More particularly, the objective of the invention is on single device, preferably finish simultaneously two procedure of processings.According to the present invention, realize this purpose in the following manner, be about to be used for the rolling ring and become profile shell, as described in the characteristic in the claim 1 with at least one Roller Design of the roll of the aforesaid operations that forms band.

In method according to claim 1, ring by rolling when forming band, its form with a plurality of complete pitch of the laps is passed through between described roll, and the material of described ring from its thickness direction to its width and length direction flow more particularly.Meanwhile, the roll that is configured to profile shell is pressed against surface profile on the outside or inboard of band.

The additional effect of such method is that during described pitch of the laps described surface profile is acted on the periphery of band repeatedly.The profile of profile shell at every turn can not be with accurately identical position and with accurately identical mode effect on tape, and for example this is because described band is elongated continuously and broaden during rolling processing.This has produced the flank of interference pattern (pattern) type in the surface profile of band.For example, the part of the flank that produces on the surface of being with by the groove in the profile shell during the pitch of the laps first time of described pitch of the laps contacts with the flat of profile shell during pitch of the laps subsequently, thereby the flank that has been formed is removed or is lowered at least once more.Yet another part of described flank can be once more contacts with groove in the profile shell, and is higher thereby this part can be manufactured into.Thereby the surface profile of final resulting band is defined by the pattern of overlapping flank section with respect to the differing heights of other surf zone of band, and other surf zone of described band has determined final result together.

Thereby the method according to this invention has caused a kind of like this surface profile, not formation rule or continuous pattern of flank wherein, but form overlapping flank section scramble pattern, relatively little, and also described flank section has significantly different height.

Although a back specific character of surface profile is not what do not expect in essence, if but the height dimension of profile is more constant or repeats at least more, promptly the profile with profile shell is directly and fixing relation that then the function of the band in the pressure zone can be modified substantially.

According to the present invention, realize this purpose by using method according to claim 2.Because profile shell itself is provided with the groove section of scramble pattern now, so in practice, the long-term interference between the surface profile of the surface profile of having avoided band during the continuous pitch of the laps of band and profile shell.The final surface profile of band has the favourable height that does not alter a great deal, and very approaching with the height of the surface profile of profile shell.

Certainly, according to a kind of method in back of the present invention will scramble pattern the flank section form surface profile.Yet because the controllability and the repeatability of this production process, if surface profile is provided with profile constant and intact qualification, promptly mode of rule is very favourable.In addition, for example, in the operating period of pressure zone, between band, use fluid lubricant substantially, thereby eliminate frictional heat, in this case, because the long-term and firm contact between the band is so advantageously comprise the flank of formation rule and continuous mode for surface profile.Thereby, the invention still further relates to the optional method that forms flank continuous and intact definition mode.This optional method is included in the claim 3.

Description of drawings

Based on accompanying drawing, will be described in more detail the present invention.

Fig. 1 shows the overview according to rolling process of the present invention, has schematically shown corresponding roll milling apparatus;

Fig. 2 shows the perspective view and the cutaway view of the band of the institute's rolling with surface profile;

Fig. 3 shows the embodiment that can be used for the profile shell in the method according to this invention;

Fig. 4 shows another embodiment of the profile shell that is used for the method according to this invention;

Fig. 5 shows explanation according to the curve map in the rolling stage of one of the inventive method, shows used rotating speed and rolling force.

The specific embodiment

Fig. 1 shows roll milling apparatus, and it schematically shows in this mode that employed rolling process is described.This device comprises three roll milling apparatus parts or module.In this case, figure shows first measurement module 1, rolling module 2 and second measurement module 3 from right to left.And controlled, described electronic control unit is not shown specifically in the drawings by electronic control unit for roll milling apparatus and rolling process.

Be with 10 at its initial state, promptly before rolling,, can also be referred to as with term " ring " owing to its circle, relative stiffness feature.After rolling, band also can be referred to as with term " soft rope " owing to its flexible characteristic.

Measurement module

1 and 3 comprises measuring

roller

4,5, rolling or not rolling with 10 can measure mode with 10 thickness D around described

measuring roller

4,5 assemblings.Preferably, at least one roller in the

roller

4 or 5 is drivable, thereby can finish thickness measure with a plurality of location points on 10 the periphery, and can determine this average thickness value.Described driven

roller

4 or 5 preferred removable away from corresponding another

roller

5 or 4, thus band application is added tension, and this is for the accuracy of thickness measure and be favourable for the repeatability more particularly.Can utilize the displacement transducer DS that is contained between the

measuring roller

4,5 to finish thickness measure.According to the present invention, thickness or average thickness are a kind of qualification measured values, its be used for determining will by rolling with 10 material volume, and thereby be used for determining the technology setting of rolling process.If will also be determined, then can determine the described measured value of material volume more accurately by the length of the band of rolling and also possible width.In band production process according to the present invention, it is exactly enough only measuring thickness, and this is because to be set as with 10 length and width be constant, and this is being very possible in conjunction with producing in will be by the known mode of the band of rolling.In this known production method, produce band in the following manner, promptly roll sheet material with form tubular, then with the overlapping edge soldering of described sheet material together and the pipe that will form by this way cut into ring and peel off and clean these rings then.

Rolling module 2 comprises two rotating support rollers 6,7, wherein first roller 7 is placed in the roll module 2 between two parties, and second roller 6 can be placed in the roll module 2 with being shifted, thereby it can apply tensile force f m, Fl, and will 10 can be around the assembling of these backing rolls by being with of rolling.In order to apply described tensile force f m, Fl, roll module 2 comprises first actuating device 21, it comprises motor M and screwed axle S in this illustrated embodiment, and described first actuating device can move roller keeper 8, the second backing rolls 6 with respect to first backing roll 7 and be rotatably installed on the described roller keeper.

Accompanying drawing also shows displacement transducer LS, and by means of the reference cell 9 of roller keeper 8, described displacement transducer can be used for determining the displacement of roller keeper, and can be used for determining institute's rolling with 10 length L.Power sensor that illustrates equally or dynamometer LC can be used for measuring the actual pulling force that applies.After rolling finishes, come to determine exactly resulting strip length L by means of the diameter of displacement transducer LS by distance between the measured backing roll that obtains 6 and 7 and described roller, this measurement does not have rolling force Fu or extruding force Fu to be applied between the roll 11 and first backing roll 7 to realize by allowing described band to rotate around backing roll 6 and 7.According to the present invention, measured strip length L can be advantageously used in by feedback and optimize rolling processing setting, but also can be used as institute's rolling with 10 on the control parameter of the procedure of processing subsequently that will finish.

In addition, rolling module 2 comprises a pair of bearing roller 12 that acts on first backing roll 7, roll 11 and act on pressure roller 13 on the described bearing roller 12.Bearing roller 12 is provided with recess respectively on their periphery, this means they only contiguous with 10 double side acting on first backing roll 7.Pressure roller 13 is placed in the rolling module 2 under the effect of second actuating device 22 movably, described second actuating device comprises motor M and screwed axle S in this illustrated embodiment, thereby extruding or rolling force Fu can be applied on the bearing roller 12, and described extruding force Fu can be measured by means of being called ergographic power sensor LC.Owing to the double base that is provided for first backing roll 7 by bearing roller 12, so during rolling, the extruding force Fu that is applied by pressure roller 13 is passed to backing roll 7 with balance and stable manner via bearing roller 12.This backing roll 7 is with 10 to be bearing on the roll 11 via a part conversely, and described backing roll is carrying extruding force Fu via reaction force Fr during rolling.During rolling processing, band is configured to it and rotates between first backing roll 7 and roll 11.By shown in the arrow among the figure, drive one or more as described in the rotation that realizes with 10 of

roller

6,7,11,12 and 13.As with 10 rotation and the result who applies extruding force Fu thereon, material on whole periphery from 10 gauge length and width dimensions flow towards described band.The direction that moves or rotate with 10 is very important for the quality of rolling processing, it should be noted with 10 and roller 11 and 7 between the contact position lubricant without interruption and the mode of cooling agent finish described rolling processing, thereby backing roll 7 is with 10 by means of roll 11 controls, and produces the practical distortion of described band in 10 stretched portion.

Control module determines for specific with 10 required extruding force Fu and tensile force f l, and described power during rolling processing according to each is applied in via actuating

device

21 or 22 with 10 measured thickness D before rolling.

The processing of known rolling mainly is intended to realize the homogeneous band thickness D that expects, but according to the present invention, also can advantageously be configured to surface profile 50 is introduced with in 10 the main body sidepiece 51,52, promptly radially inwardly towards surface 51, that is to say inboard 51, perhaps radially outward towards surface 52, that is to say the outside 52 of band.

Figure 2 illustrates be provided with such surface profile 50 be with 10, described figure is with the two form of the form of perspective illustration and the cutaway view A-A that simplifies very much.Shown surface profile 50 can be described to a kind of cross profile that has the flank 53 of protrusion, and the flank of described protrusion intersects each other and extends with the angle θ with respect to the circumferential L of described band on 10 whole width W in this embodiment.According to the present invention, the characteristic parameter of described cross profile is described angle θ; The width of flank 53 or lateral dimension κ; Flank 53 with respect to height δ with other corresponding lower surface 54 of 10; And the ratio σ (not shown) between the accumulated size of the accumulated size of flank 53 and valley areas 54, described accumulated size records on the circumferential L of described band perpendicular to described width W with 10 at least.If be used as the parts of taking advantage of people's saloon car transmission pressure zone traction element with 10, then described parameter has the value in the following respective range substantially, promptly for the angle θ of cross profile from 20 to 70 the degree, from 1 to 200 μ m for the width κ of flank 53, from 2 to 14 μ m for the height δ of flank 53, and for described ratio σ from 10 to 25.

In the method according to the invention, with 10 through a roller in two rollers 7,11 between them, so-called profile shell 7 is provided with anti-or negative profile 60 during rolling processing, at least there, its be with 10 to contact.Fig. 3 has schematically shown the view of such profile shell 7.For example, if comprise the flank 53 of protrusion with 10 desired surface profile 50, then the outer surface of profile shell 7 is provided with groove 61.Significantly, this situation can also be put upside down, in this case, the surface profile 50 with 10 comprises groove and the outer surface of roller 7 comprises the flank of protrusion.

As mentioned above, this method can cause the remarkable change with the vertical size aspect of 10 surface profile 50, the height δ of flank 53 for example, and this does not expect under specific circumstances.If purpose is to obtain more constant and height δ that more particularly repeat, profile shell 7 then according to the present invention must be provided with irregular or or even the independent profile section of stochastic model.Fig. 4 has schematically shown the view of such profile shell 7, wherein, profile 60 according to the present invention comprises described profile section 62, more particularly be the groove section 62 of various different lengths and position in the present embodiment, in addition, they all point to along one or more qualification directions in this embodiment.

As mentioned above, a kind of method in back has caused the irregular surface profile 50 with 10.If purpose is to produce profile more constant and that limit, i.e. the mode of rule of Dai surface profile 50, profile shell 7 then according to the present invention should be provided with profile 60 as shown in Figure 3, and it comprises the continuous groove 61 of mode of rule.In the method according to the invention, the rolling process also should finish with the rolling stage, and in this case, the described rolling stage is shown die mould rolling stage PF, wherein be with 10 at least when turning around, higher relatively rolling force Fu is applied between roll 11 and the profile shell 7.

Fig. 5 shows rolling process HF, UF, and it uses additional with good grounds die mould rolling stage PF of the present invention, the rolling force Fu on showing the rotating speed rpm in the duration of all processes HF, UF, PF t on the basis of curve map and being applied to 10 usually.In known rolling process, roll among the stage HF being called as home roll, be with 10 at first to be configured to other rotating speed of expectation level rpm, after this, apply other rolling force of expectation level Fu, at least almost finish reducing with the expectation of 10 thickness.Then, in being called refine rolling stage UF, at first reduce the rank of rolling force Fu, and also reduce the rank of rotating speed rpm then, and these ranks that reduced are held certain period of time.In the method according to the invention, this known rolling process comprises the die mould rolling stage PF that makes an addition to it, and wherein, rolling force Fu is temporarily increased at least, promptly is with 10 preferably rotate a complete turn, seldom several complete turn at most just so that make.In this stage, preferably, the rank of rolling force Fu is lower than makes rank firmly during home roll rolls stage HF, and more particularly, the rolling force Fu that is applied in die mould rolling stage PF is the mean value of the rolling force Fu that rolls among the stage HF to be applied respectively at refine rolling stage UF and home roll.Preferably, die mould rolling stage PF also compares lower rotating speed rpm and finishes to roll stage HF with home roll.

In Fig. 5, in order to compare, be shown in dotted line known rolling process, wherein in refine rolling stage UF end, the two is decreased to zero rolling force Fu and rotating speed rpm.

Except above-mentioned explanation, the invention still further relates to all detailed structure in the accompanying drawing, relate at least they can by those skilled in the art immediately with clear and definite degree as can be known, and the present invention relates to any details described in claims.

Claims

1. be used to form the method for the endless metal belt (10) of (50) with surface profile, described band is specially adapted in the pressure zone, wherein, in first step, described band (10) is assemblied at least two rotating support rollers (6 in the mode of rolling not, 7) on, in second step, described band is placed in two rotation rolls (7 of location toward each other, 11) between, and at the 3rd procedure of processing (HF, UF) in, at described band (10) by at least one roller (6,7, when 11) promoting to rotate multi-turn, described band bears and is applied to described roll (7,11) rolling force between (Fu), it is characterized in that, described two rolls (7,11) at least one roll, especially profile shell (7) in are provided with surface profile (60).

2. method according to claim 1 is characterized in that, the surface profile (60) of described profile shell (7) comprises the groove section that is separated from each other irregular, particularly stochastic model (62).

3. method according to claim 1, it is characterized in that, the surface profile (60) of described profile shell (7) comprises the continuous groove (61) of mode of rule, and in the 4th procedure of processing (PF), when described band rotates at least one circle, described band (10) bears a kind of like this level other rolling force (Fu), and the rank of described rolling force is compared with the rank of the rolling force that is applied when described the 3rd procedure of processing (HF, UF) finishes to some extent to be increased.

4. according to the described method of last claim, it is characterized in that described the 3rd procedure of processing (HF, UF) comprises that home roll rolls the stage (HF), wherein used high relatively rolling force (Fu); And the refine rolling stage (UF), wherein applied low relatively rolling force (Fu), and the rank of the rolling force (Fu) in described the 4th procedure of processing (PF) is between the appropriate level that described home roll rolls the stage rolling force of (HF) and the rolling force in described refine rolling stage (UF).

5. according to claim 3 or 4 described methods, it is characterized in that, in described the 4th procedure of processing (PF), the rotating speed of described band (10) is less than the maximum (top) speed at band described in described the 3rd procedure of processing (HF, UF), and in described the 4th procedure of processing (PF), described band (10) the whole circle that roughly rotates.

6. be used to form the device of the endless metal belt (10) of (50) with surface profile, it is provided with the first and second rotating support rollers (6,7), described band (10) is suitable for assembling around described rotating support roller with elongated form, and described device is provided with two rolls (7,11), described band (10) is suitable for being placed between described two rolls, and between described two rolls, can apply rolling force (Fu), and described band (10) bears described rolling force, it is characterized in that, described roll (7,11) at least one roll (7) in, profile shell (7) by name is provided with surface profile (60).

7. device according to claim 5 is characterized in that, the surface profile (60) of described profile shell (7) is provided with the groove section that is separated from each other irregular, particularly stochastic model (62).

8. device according to claim 5 is characterized in that, the surface profile (60) of described profile shell (7) is provided with the continuous groove (61) of mode of rule.

9. according to claim 5,6 or 7 arbitrary described devices, it is characterized in that, described profile shell (7) act on described band (10) radially inwardly towards sidepiece (51) on.

10. according to claim 5,6,7 or 8 arbitrary described devices, it is characterized in that described roll (7,11) has significantly different diameter, and the less roller of diameter forms described profile shell (7) in them.

11. profile shell (7) that is used for according to the arbitrary described device of claim 5 to 9.

12. pressure zone, it comprises at least one endless metal belt (10) and a plurality of plate shape lateral direction element that is movably disposed within on the described band (10), it is characterized in that, utilize according to the arbitrary described method of claim 1 to 4 or by means of making described band (10) according to the arbitrary described device of claim 5 to 10.