CN100379520C

CN100379520C - Method and device for grinding a rotating roller using an elastic steady-rest support

Info

Publication number: CN100379520C
Application number: CNB038168138A
Authority: CN
Inventors: 埃尔温·容克尔
Original assignee: Erwin Junker Maschinenfabrik GmbH
Current assignee: Erwin Junker Maschinenfabrik GmbH
Priority date: 2002-07-17
Filing date: 2003-07-17
Publication date: 2008-04-09
Anticipated expiration: 2023-07-17
Also published as: CN1668421A; EP1521663A1; CA2491800C; BR0312660A; DE50305509D1; DE10232394A1; EP1521663B1; CA2491800A1; KR20050019813A; KR101026324B1; RU2005104233A; ES2276116T3; WO2004007145A1; JP2005537140A; JP4030998B2; AU2003254370A1; DE10232394B4; ATE343453T1

Abstract

The invention relates to a device for grinding rollers, also for grinding hollow rollers. As the rollers tend to vibrate transversally as a result of the contact with the grinding disc, a cushioned body is applied to the opposite side of the roller from the grinding disc, said body being engaged pneumatically against the roller and adapting at least partially to the contours of the roller. The cushioned body consists of an elastic solid material or an elastic external skin that is filled with an elastic pressurized medium. The engagement pressure of the cushion is adjustable. This is achieved by a pneumatic advance cylinder located on a base, said cylinder having a piston that can be impinged on both sides and that bears on its piston rod a fixing plate comprising the elastic cushion. The advance cylinder is connected to compressed air conduits, P indicating the conduit comprising a pressure regulator and L indicating the return conduit in the standard case. The invention thus provides a device for damping vibrations, which suppresses any regenerative chatter and guarantees a grinding pattern that is devoid of chatter marks.

Description

Method and apparatus by an elasticity support grinding rotation roller

Technical field

The present invention relates to a kind of method and apparatus of excircle of the rotation roller that is supported in its end of wheel grinding with rotation, wherein, the length of roller is many times of grinding wheel width.

Background technology

Need elongated roller in many large-scale industrial production processes, some is driven in rotation and often must heats internally or cool off at work for they.It is 85mm that this class roller length can for example have 1000mm and diameter approximately.In addition, these rollers often are the tubulose of wall thickness less than 1mm.Surface quality and accuracy to size thereof to these rollers have proposed high requirement.So this class roller is ground to final size and needed surface quality has proposed high requirement to the professional.

A kind of harmful phenomenon known when roller cylindricalo grinding is roller lateral thrust when emery wheel acts on its periphery.Consequently can cause the roller stray circle cylindricality that processes.In addition, roller is in self-excitation oscillation crosswise state in this process, so-called reproducibility chatter.The consequence of this reproducibility chatter is to form the flutter trace on the periphery of roller, this means and reduces surface quality and consequent roller can not be used in many application scenarios.The bending of roller when preventing peripheral grinding outside, known roller on its excircle with one or more supports or bearing support.Support or bearing are made up of steel strut, and it causes the support of blank.But the roller of rotation is bearing on the support of steel or the bearing and especially causes the vestige that slides, and this means equally and reduces surface quality and be flagrant.The known operation measure that is used to eliminate the reproducibility chatter causes the slowing down grinding process.

A kind of method by the known described type of preface of real work is that roller is at first pressed the plung-cut grinding method and roughly ground with an emery wheel of being made up of diamond dust.By this way roller is worked into a corase grind size for this reason, that is,, roughly grinds this size until the total length of roller with emery wheel successively radial feed repeatedly.Then repair this same emery wheel, then fine grinding or correct grinding.Correct grinding is finished by the length feed grinding, and at this moment, the emery wheel of rotation and the roller of rotation vertically move relative to each other on its excircle along roller.When the length of roller during, use width for example to be the emery wheel of 100mm for 1000mm for example.The shortcoming of this known method is, must often be repaired by the emery wheel that diamond dust is formed.This also may need in unique correct grinding process.In a word, this known method for grinding is very time-consuming.

By the known a kind of support of cylindrical work in company with rotation that be used to support in grinding machine of DE1627998A1, it is designed to hydrostatic formula half-and-half bearing.Therefore, on liquid film, it must bring in constant renewal in the rotational workpieces of grinding by rest.For this purpose incessantly to hydrostatic formula half-and-half bearing feed streams.Liquid can be a kind of cooling agent, and it needs when grinding anyway.Adopt this known support to reach effective holding workpieces, protect its surface and reach the low frictionally purpose of supporting, change support continually thereby needn't cross.Adopt known support not plan vibration damping and avoid the flutter trace and thereby on sizable degree, also do not reach this purpose.Because half-and-half bearing is made with metal, thus must monitor the work of hydrostatic formula half-and-half bearing all the time in earnest, because metal slides on metal under the situation of liquid film collapse, thus can defective work piece.

Summary of the invention

Therefore the objective of the invention is to create the method for the described type of a kind of preface, it allows to use the CBN emery wheel and can significantly shorten working hours, and however still causes having the roller of high dimensional accuracy and surface quality.

According to the present invention, a kind of method of excircle of the rotation roller that is supported in its end of wheel grinding with rotation is proposed, wherein, the length of roller is many times of grinding wheel width, it is characterized by: during grinding at least one

pad

15,23,26,34,39,40,41 with emery wheel 13 opposed circumference area in lean on the roller 6 of wanting grinding, pad is made of a kind of flexible solid material or a kind of elastic overcoat that is filled with flexible pressure medium.

By with pad with the opposed circumference area of emery wheel in lean on the roller of wanting grinding, successfully damping the oscillation crosswise of roller and the vibration that for example causes by emery wheel.The reproducibility chatter no longer occurs, and thereby can not stay worrying flutter trace again.That is to say that pad never causes the slip vestige with opposite by the support or the bearing of steel, this slide mark means the reduction surface quality and can be found out by the professional immediately.Mean that with this regulation of the opposed circumference area of emery wheel pad radially can be placed on the opposition side of roller on the emery wheel opposite substantially.Yet this regulation should not understood from the geometric meaning of strictness, can lean the realization when radially and axially changing in certain zone with respect to emery wheel of position on the roller at pad equally because successfully suppress vibration.Employing can significantly be shortened grinding process by method of the present invention, compares to shorten with known method to reach 50%.When plung-cut grinding, the leaning of pad causes the identical result as obtaining when the length feed grinding.

Yet preferably, implement the emery wheel 13 of rotation this moment and roller 6 vertically on its excircle, the moving relative to each other of rotation as the length feed grinding along roller 6 by method of the present invention.For this reason, for example be bearing in top go up and by top or by clip drive the roller of rotation can be on Grinder bench through the emery wheel of rotation.But also it is contemplated that opposite layout.The length feed grinding of carrying out continuously with compare the technical process that more meets automation by the plung-cut grinding of stage requirement; In addition, do not have the problem that produces polishing scratch at transition point in this case.

Employing has successfully suppressed harmful oscillation phenomenon by method of the present invention, thereby can process by the CBN emery wheel.Therefore be by particularly advantageous design of method of the present invention that roller 6 is successively implemented corase grind and correct grinding with the CBN

emery wheel

12,13 of a ceramic composite respectively when once clamping, and when correct grinding, implement leaning of pad 15 at least.

How relate to pad (back is generically and collectively referred to as " cushion ") by the favourable design of below some of method of the present invention leans on the roller and how opposed roller motion in case of necessity.

For example confirmed already advantageously that pad 15 flexibly leaned on the roller 6.Under the simplest situation, this can adopt one to press spring and realize that by linear guiding the tightness of spring is adjustable.But preferably lean by a kind of pressure medium, but also it is contemplated that a kind of electronically controlled device that leans by motor.

If to lean the power of leaning used on the roller 6 be adjustable to cushion 15 and can also be that value is zero, then provide broad application possibility grinding process begins before.At least lean a cushion because roller under the influence of emery wheel operating force towards the pad the direction bending.

Adopt cushion 15 pneumatically to lean on the roller 6, make and on operating technology, can control the power of leaning particularly well.

Can implement the most simply by method of the present invention by another design, that is, leaning along the vertical of roller of at least one cushion being carried out an invariable position during grinding.When for example roller be bearing in top between and emery wheel in its vertical process of the excircle upper edge of roller, then cushion preferably is arranged in the axial central authorities of basic top roll, because produce the strongest oscillation crosswise there.

In grinding process, be parallel to vertically moving relative to each other of roller 6 by at least one cushion 15 and roller 6, implement more appropriate vibration damping effectively.If in this case cushion 15 radially be in emery wheel 13 relative position ground with emery wheel with respect to roller 6 motions, then fill up mutually opposed with emery wheel all the time and thereby be on the position of exciting.Reach especially effectively vibration damping in this way.

Hereinafter some that mention further develop the design that relates to pad and associated lubricant and the cooling agent supply in cushion leans zone on the roller.

When for example advantageously,

cushion

15,23,26,34 is on leaning the roller 6 of wanting grinding and the cylindrical contour shape of roller be complementary.This coupling can particularly advantageously take following measures to realize,, especially a kind of gas of a kind of pressure medium is affacted internally outer putting that flexibly abuts on the roller 6 of wanting grinding of

pad

23,26,34 that is.To fill up inflation as balloon in this way, balloon can flexibly match with a barrier.

Owing between overcoat that fills up and roller, produce friction in this case, for a kind of liquid state or gaseous state therefore advantageously to the lubricant of position that recline of

cushion

23,26,34 on roller 6.Associated method can design by simple especially mode, that is, make lubricant be made of the pressure medium of pad 34 and supply to the position that reclines by exporting 35, and the outer of roller 6 that face that these outlets are in pad 34 puts.

How other designs specifically controls if relating to by method for grinding of the present invention.

For example vertical profile of roller regulation can obtain when grinding like this, that is, cushion is adjusted into transverse to roller makes roller crooked and make vertical profile of roller form slight recessed or protruding curve by grinding in end-state at grinding process.Here, roller has the bending of expectation when grinding, and oscillation crosswise does not take place.If cushion has certain little distance in the roller inactive state from its excircle, then roller is crooked under the emery wheel influence, contacts with pad until emery wheel.But also can adjust pretightning force, then make the direction protuberantia of roller in this case towards emery wheel.Cause roller to have a kind of vertical profile vertically when the corresponding grinding process of correct control, it is recessed or protruding arched shape extension by the mode of expectation.

If emery wheel moves with respect to the roller of wanting grinding vertically, depend on then emery wheel is in which axial area of roller, change the oscillation crosswise that is produced simultaneously.Therefore, when the power that leans of at least one cushion changes and/or is adjusted into different value for a plurality of

pads

39,40,41, help the fine tuning grinding process in grinding process.The change that leans power is here undertaken by the standard that is just in time acted on that axial area on the roller by emery wheel and/or pad of roller.Needed value can be determined rapidly by calculating or actual tests.

The invention still further relates to a kind of equipment that is used for the excircle of grinding roller, be particularly useful for implementing according to the top claim of having quoted described by method of the present invention.Regulation by claim 17 of the present invention, being used for roller 6 cylindricalo grindings is particularly useful for implementing equipment by the described method of claim 1 to 16 and comprises and being used for roller 6 in its distolateral clamping be used to rotate the clamping and the drive unit of driven roller 6, at least one grinding wheel spindle 11 that drives an emery wheel 13, it can move along a direction of extending transverse to the longitudinal axis of roller 6, emery wheel 13 can be pressed against on the roller 6 thus, be used for the drive unit that roller 6 and emery wheel 13 are along the longitudinal movement mutually, and at least one is in the device 14 in the opposite circumference area of roller 6 and emery wheel 13, can be by it with a

pad

15,23,26,34,39,40, on the 41 same circumference that longitudinally lean roller transverse to roller 6, described pad is made of a kind of flexible solid material or a kind of elastic overcoat that is filled with the elastic pressure medium.

The device that is used to lean pad (cushion) can for example be located on the frame that the roller of wanting grinding is housed equally or Grinder bench.Leaning can be mechanical, electronic or undertaken by pressure medium.

Below design how to relate to can be structurally advantageously and on its size, how to apply the power of leaning targetedly.For example importantly have a control device that is used to adjust the power of leaning in order to control high-quality grinding process, this power of leaning of cushion 15 usefulness leans on the circumference of the roller 6 of wanting grinding.

If exist a plurality of edges to want the

cushion

39,40,41 of vertical arrangement of the roller 6 of grinding, then advantageously the power of leaning of each

pad

39,40,41 can separately and be independent of other and adjusts with filling up.

For particularly advantageous control possibility is provided, the device that is used to lean cushion 15 comprises a beidirectional pneumatic thrust cylinder 17, and pad 15 is fixed on its piston rod 19.If the

cushions

39,40,41 that exist a plurality of edges to want the roller 6 of grinding vertically to arrange, then be that each pneumatic thrust cylinder sets oneself a pressure regulator valve 44,45,46.Guarantee perfect pneumatic control in this way, successfully be suppressed at the vibration of roll shaft whereby to a plurality of positions of length.

Present design with special target alignment pad.Simple proposal is that cushion 15 is made of a flexible solid material piece.A kind of high-quality design have sealing cell, wear-resisting surface is arranged or is provided with the foamed plastics of wearing face, can finish this task well.It has matched with the outline of roller and vibration damping successfully in this way to a certain extent.

If cushion 23 is made of the hollow body of an elastic overcoat and pressure medium is in wherein, then can obtain other advantages.This pressure medium can be a kind of gas, preferably compressed air.A hollow body that is under the pressure is specially adapted to be complementary with the outline of roller, but also the effect of can taking measures to control promptly, is adjusted interior pressure best according to the grinding process that will implement.

Exactly because this pad matches with the outline of roller well, so also can produce huge friction between cushion and roller.In order to reduce friction, need supply with lubricated and cooling agent to the position that reclines.For this reason, establish input pipe, in the zone of their feeding cushion positions that reclines on roller and by them a kind of lubricant is supplied with the position that reclines by a kind of favourable design.Consider to adopt grinding emulsion common in grinding technique, synthetic cooling lubricant, grinding oil as lubricant here.But equally also can adopt compressed air.If the input pipe of guiding lubricant in this case passes cushion the recline position of pad on roller of directly leading, then lubricant directly is in the place that optimum efficiency can be arranged.Under the situation of liquid lubricant, between roller and cushion, form a skim, it is equivalent to the water layer effect of doughnut and effective especially.If lubricated, then can form an air cushion, as known by hovercraft with compressed air.Must point out emphatically, lubricant film or air cushion effectively reduce friction loss when grinding, do not reduce effectiveness in vibration suppression thus.

Effective especially scheme is on a kind of structure, and the input pipe that passes cushion 26 guiding lubricants is designed to flexible pipe 30, and they are made of an integral body with the elastic overcoat of pad 26, and wherein lubricant and pressure medium separate each other.

But if adopt the pressure medium itself that fills up as cooling agent, then simple especially on the structure, the elastic overcoat of cushion 34 is shaped on a plurality of outlets on it faces the abutment face of the roller 6 of wanting grinding, pressure medium passes their and flows out in the position that reclines and constitute cooling and lubricating film.Therefore must be in this design from cushion to the external position outflow pressure medium continuously that reclines.This just needs continuous supply pressure medium, in this process by the pressure regulator valve supply of controlled pressure medium without doubt.This programme can also be further perfect, and cushion is in the pneumatic control of the thrust cylinder on its piston rod for this reason, also can carry out simultaneously in this process.

For the two stage grinding process implementing to mention in the methods of the invention and cushion 15 is leaned on the roller when the correct grinding at least, structurally stipulate for equipment by favourable mode, grinding wheel spindle case 8 is established two

grinding wheel spindles

10,11, they can be by selecting to place the operating position, wherein adorn the CBN emery wheel 12 of the ceramic composite of a corase grind usefulness on first grinding wheel spindle 10, and the CBN emery wheel 13 of adorning the ceramic composite of a correct grinding usefulness on second grinding wheel spindle, and establish an automatic clutch, when second grinding wheel spindle 11 is placed in the operating position, starts at least one by clutch and elastic pad 15 is leaned device on the roller 6 of wanting grinding.Get ready for automation in this way by equipment of the present invention, this wishes for carry out the modernization production in enormous quantities on streamline very much.

Description of drawings

Illustrate in greater detail the present invention by the embodiment that represents in the accompanying drawing below.Accompanying drawing is represented:

Fig. 1 implements the equipment by method of the present invention, the expression corase grind stage among the figure;

Fig. 2 equipment shown in Figure 1 is in the correct grinding stage;

Fig. 3 corresponding to the enlarged drawing of line of vision A-A among Fig. 2 and expression cushion with to grind

The details of the roller mating reaction of cutting;

The another kind design of Fig. 4 cushion;

Fig. 5 is in the supply of cushion zone in-lubricant;

A kind of cushion of Fig. 6, its pressure medium are simultaneously as lubricant;

Fig. 7 controls a plurality of being used for cushion is leaned on the different axially-spaced locations of roller

The system diagram of device.

The specific embodiment

Fig. 1 at first schematically illustrates the common round part grinding machine that is used for the cylindrical component peripheral milling.One from above can see frame 1 view seen, workpiece spindle box 2 and tailstock 3 are on the frame.Workpiece spindle box 2 and tailstock 3 can move axially relatively, so clamp the roller 6 of wanting grinding and can drive its rotation by the

thimble

4 and 5 that is in above them.But roller also can drive by clip, and these all are traditional and thereby not special here expression.Workpiece spindle box 2 and tailstock 3 are on the Grinder bench 7, and it can move along the Z direction as a whole.

In addition, grinding wheel spindle case 8 is on the frame 1, and it can be adjusted around a vertical gyroaxis 9.The grinding wheel spindle case is equipped with first grinding wheel spindle 10 and second grinding wheel spindle 11.Wherein installation is used for corase grind or rough machined first emery wheel 12 on first grinding wheel spindle 10, and second emery wheel 13 that installation provision is used to finish grind or polish on second grinding wheel spindle 11.

By grinding wheel spindle case 8 is moved in the direction of arrow B, thus can be by selecting that the emery wheel 12 (Fig. 1) or second emery wheel 13 (Fig. 2) are placed the operating position.In addition, whole grinding wheel spindle case 8 can along the directions X numerical control move, the emery wheel that always will be in the operating position thus is controlled to be and leans on the roller 6 of wanting grinding.

As can be seen, the axial length of the roller 6 of grinding to equal the manyfold of grinding wheel width, therefore when so-called length feed grinding, for grinding, emery wheel and want the roller of grinding to move past each other vertically.The roller 6 that for this reason is on the grinding carriage slide can be in the other process of emery wheel.But also can make opposite layout, that is, the roller of grinding fixing vertically, and the grinding wheel spindle case be in the other process of roller.

Represent vibration absorber with 14, cushion 15 can be controlled to be by it and lean on the roller.Fig. 1 indication device 14 is in its inoperative position; At this moment, cushion 14 is in the place with a certain distance from the roller surface of wanting grinding.Otherwise cushion 15 leans on the roller in by the view of Fig. 2.It is radially mutually opposed with emery wheel 13.When emery wheel acts on the roller 6, make the roller lateral thrust and meanwhile tend to oscillation crosswise, this especially occurs in the length/diameter ratio greater than under the situation represented among the figure.Tube roll with little material thickness is easy to generate this oscillation crosswise especially.Now by cushion 15 is leaned on the roller with appropriateness and adjustable pressure, damping and suppressed oscillation crosswise, thus " reproducibility chatter " that the professional worries do not appear.Also avoid causing reducing flutter trace thus through the roller surface quality of grinding.

In pressing the view of Fig. 1 and 2, device 14 just in time is in the opposite of emery wheel 12 or 13.But other at emery wheel vertically when the roller 6 of wanting grinding through out-of-date by Grinder bench 7, also changed simultaneously and installed 14 positions with respect to emery wheel.Therefore advantageously along wanting the axial length of the roller 6 of grinding to establish a plurality of devices that different cushions is arranged, the Fig. 7 that also will describe in detail as the back is represented.

But also it is contemplated that device 14 is installed on the frame, so it remains on the emery wheel opposite that is in the operating position all the time exactly.At last, it is also contemplated that a kind of scheme, though only establish a device 14 by this scheme, it moves with respect to the roller of wanting grinding vertically with grinding wheel spindle, thereby under any circumstance all keeps emery wheel and the mutual coordination of installing 14.

Fig. 1 and 2 has represented a kind of by the particularly preferred method of the present invention simultaneously, and wherein, corase grind is undertaken by the CBN emery wheel of a ceramic composite, and the device 14 that is used for vibration damping this moment still keeps not working.Yet,, engage ground starting drive 14 thus automatically, as shown in Figure 2 if the emery wheel 13 that is used to finish grind places the operating position.Therefore when correct grinding or polishing, effectively suppressed oscillation crosswise, so still can reach best surface quality although shortened process time.

The enlarged drawing of line of vision A-A in Fig. 3 presentation graphs 2.Its explanation is used for the device of the air-operated control of vibration damping.Establish pedestal 16, it can directly be fixed on the frame 1 or on the Grinder bench 7 for this reason.A beidirectional pneumatic thrust cylinder 17 is housed on the pedestal 16, and piston 18 can load from both sides therein.Piston 18 is with a piston rod 19, and fixed head 20 is on the piston rod.Cushion 15 bondings or sulfuration are on fixed head 20.Pad can be made with the rubber-like material or the plastics of the hollow cell with sealing, so it is pliable and tough especially and adaptive capacity arranged.Although conclusive is that the outer surface of cushion 15 is flexible, it still can load and wear-resisting.21 and 22 is compressed air hoses, and the thrust cylinder is by they control.Therefore the thrust cylinder can with cushion 15 with accurately adjustable lean to defeat lean against on the roller 6.As seen from the figure, the both sides of roller 6 (being a hollow roll in this example) between emery wheel 13 and cushion 15 load.Therefore roller leans slightly skew under the power effect at emery wheel 13, but the oscillation crosswise that produce this moment is suppressed by the damping action of cushion 15.

The home position of cushion 15 also is adjustable before grinding process begins.The power of leaning that exists when for example beginning can be zero, so only just roller 6 is pressed in the cushion 15 under the effect of emery wheel 13.

Fig. 4 has represented a kind of vibration absorber 14, and wherein, cushion 23 is designed to the hollow body of an elastic overcoat, and this is similar to the pneumatic tyre of automobile.Inside by cushion 23 can for example be introduced compressed air by input pipe 24 can reach different elastic characteristics thus.But it is contemplated that also a kind of liquid of cushion filling is as long as can guarantee the elasticity rollback of liquid in this case.Also can consider a kind of gelinite of filling.

Device 14 remaining design is consistent with the device of pressing Fig. 3, especially cushion 23 on roller 6 lean here also must by a special device for example a thrust cylinder carry out.

Fig. 5 illustrates the cushion 26 of stowing pressure medium equally, and here it also is on the fixed head 25 and is attached thereto.Fixed head 25 is connected with the input pipe 27 of pressure medium, at first considers to use compressed air for pressure medium.By an inner passage 28 that is in the fixed head 25 pressure medium is introduced in the cavity of cushion 26.Some flexible pipes 30 pass cushion 26, and they are made of an integral body with the overcoat of pad 26, but are not communicated with the inner chamber of pad 26.Flexible pipe 30 is connected with channel system 29, and it is in the fixed head 25 and will cool off with lubricant by it and is applied directly to cushion 26 on the abutment face on the roller 6 by flexible pipe 30.For this reason, flexible pipe 30 terminates in the outlet 31, exports direct alignment roller 6.As can be seen, the surface of roller 6 is led in outlet 31, so cooling and lubricant arrive the place of being badly in need of them most exactly.

Represent pressure regulator with P11 and P12, they are used to adjust the best separately operating pressure of medium.

If the pressure medium that is in the hollow cushion can be simultaneously as cooling and lubricant, just no longer need the pressure medium of pad on the one hand and the input pipe that separates separately of cooling and lubricant on the other hand.Fig. 6 represents this favourable structural design.

Press Fig. 6, still bond on the fixed head 32 or sulfuration cushion 34, wherein, input pipe 33 imports the inside of cushion 34 by pressure regulator PZ1.In this case, cushion distolaterally is shaped on some outlets 35 what it faced roller 6.Therefore the pressure medium of pad flows out by outlet 35 continuously towards the direction on roller 6 surfaces.Cushion 34 supplementary pressure medium constantly in this example is to keep the thrust that needs.

The inflatable pad of Fig. 4 to 6 expression is how with the contour shape matched well of roller.Under the situation of Fig. 5 and 6, reach, make cooling and lubricant between cushion and roller, form thin film, be similar to moisture film in so-called water layer effect or the air cushion in the automobile at hovercraft-car category in mode especially reliably.During if work, be particularly advantageous by the design of Fig. 6 by an air cushion.

Fig. 7 schematically illustrates, and when a plurality of this type of being set along roller 6 axial lengths of wanting grinding installing, how to control the device that these are used for vibration damping.Establish three

devices

36,37,38 in the illustrated case, wherein each leans a

cushion

39,40,41 on the roller 6 of wanting grinding.Described here leaning pneumatically realizes that for this reason, each

device

36,37,38 can have a thrust cylinder by Fig. 3.As can be seen, at the amplitude that is clamped in roller 6 central authorities between top 4 and 5, bigger than its amplitude that is near the clamped position the zone, outer end.Therefore appropriate is that the power that leans that the power of leaning of device 37 is chosen as

ratio device

36 and 38 is big.Correspondingly establish oneself a

pressure regulator valve

44,45,46 being used for each device compressed air input pipe P of 36,37,38, so the thrust cylinder of each device can obtain the air pressure to the best of vibration damping.In addition, compressed air input pipe P and return duct L are designed to be common to all devices.

The Reference numeral list

1 frame, 23 cushions

2 workpiece spindle box, 24 input pipes

3 back center seats, 25 fixed heads

4 thimbles, 26 cushions

5 thimbles, 27 input pipes

6 rollers, 28 inner passages

7 Grinder bench, 29 channel systems

8 grinding wheel spindle boxes, 30 flexible pipes

31 outlets of 9 revolution axles

10 first emery wheel axles, 32 fixed heads

11 second grinding wheel spindles, 33 input pipes

12 first emery wheels, 34 cushions

35 outlets of 13 second emery wheels

14 vibration absorbers, 36,37,38 vibration absorbers

15 cushions, 39,40,41 cushions

16 pedestals, 42,43 control valves

17 thrust cylinders, 44,45,46 pressure regulator valves

18 pistons

19 piston rods

20 fixed heads

21 compressed air hoses

22 compressed air hoses

Claims

1. with the method for the excircle of the rotation roller (6) that is supported in its end of one of emery wheel (13) grinding of rotation, wherein, the length of roller (6) is many times of grinding wheel width, it is characterized by: at least one pad during grinding (15,23,26,34,39,40,41) with the opposed circumference area of emery wheel (13) in lean on the roller (6) of wanting grinding, pad is made of a kind of flexible solid material or a kind of elastic overcoat that is filled with flexible pressure medium.

2. in accordance with the method for claim 1, it is characterized by: implement the length feed grinding, the emery wheel (13) of rotation this moment and roller (6) vertically on its excircle, the moving relative to each other of rotation along roller (6).

3. in accordance with the method for claim 2, it is characterized by: roller (6) is implemented corase grind and correct grinding at unique CBN emery wheel (12,13) of a ceramic composite of successively using respectively when once clamping, and implements leaning of pad (15) at least when correct grinding.

4. it is characterized by in accordance with the method for claim 1: pad (15) flexibly leans on the roller (6).

5. it is characterized by in accordance with the method for claim 1: pad (15) leans the last used power of leaning of roller (6) and is adjustable and also can be null value before grinding process begins.

6. it is characterized by in accordance with the method for claim 4: pad (15) pneumatically leans on the roller (6).

7. it is characterized by in accordance with the method for claim 1: leaning along the vertical of roller of described at least one pad being carried out an invariable position during grinding.

8. it is characterized by in accordance with the method for claim 1: described at least one pad (15) and roller (6) are parallel to vertically moving relative to each other of roller (6) in grinding process.

9. it is characterized by in accordance with the method for claim 8: pad (15) radially moves with respect to roller (6) with emery wheel with emery wheel (13) basically mutually opposed to each other.

10. it is characterized by in accordance with the method for claim 1: flexible pad (15,23,26,34) lean the roller (6) of wanting grinding when going up and the cylindrical contour shape of roller be complementary.

11. in accordance with the method for claim 10, it is characterized by: implement described coupling, a kind of gas is affacted internally outer putting that flexibly abuts on the roller (6) of wanting grinding of pad (23,26,34) for this reason as pressure medium.

12. it is characterized by in accordance with the method for claim 1: lubricant from gaseous state to the position that reclines of flexible pad (26,24) on roller (6) that supply with a kind of liquid state or.

13. in accordance with the method for claim 12, it is characterized by: lubricant supplies to the position that reclines by the pressure medium formation of pad (34) and by outlet (35), and these outlets are in outer the putting that faces roller (6) of pad (34).

14. in accordance with the method for claim 1, it is characterized by: pad is adjusted into transverse to roller, makes roller make vertical profile of roller form slight recessed or protruding curve in the grinding process bending and by grinding in end-state.

15., it is characterized by according to the described method of one of claim 1 to 14: the power that leans of described at least one pad in grinding process be change and/or be adjusted into different values for a plurality of pads (39,40,41).

16. in accordance with the method for claim 15, it is characterized by: affact mode on the roller by emery wheel and/or pad, the variation that leans power according to roller separately the standard of axial area carry out.

17. be used for the equipment of the periphery circle of grinding roller (6), be used for implementing according to the described method of one of claim 1 to 16, comprise and being used for roller (6) in its distolateral clamping be used for clamping and the drive unit that roller (6) rotation drives, at least one grinding wheel spindle (11) that drives at least one emery wheel (13), this grinding wheel spindle can move along a direction of extending transverse to the longitudinal axis of roller (6), emery wheel (13) can be pressed against on the roller (6) thus, be used for drive unit that roller (6) and emery wheel (13) be along the longitudinal movement mutually and at least one and be in device (14) in roller (6) circumference area opposite with emery wheel (13), can be by this device with a pad (15,23,26,34,39,40,41) equally on the circumference that longitudinally leans roller transverse to roller (6), described pad is made of a kind of flexible solid material or a kind of elastic overcoat that is filled with flexible pressure medium.

18., it is characterized by: a control device is arranged, be used to adjust the used power that leans on the circumference that pad (15) leans the roller (6) of wanting grinding according to the described equipment of claim 17.

19. according to the described equipment of claim 18, it is characterized by: the device that is used to lean elastic pad (15) comprises a beidirectional pneumatic thrust cylinder (17), and pad (15) is fixed on its piston rod (19).

20. according to the described equipment of claim 17, it is characterized by: have the elastic pad (39,40,41) that a plurality of edges want the roller of grinding (6) to arrange, can separately and be independent of other pad ground in order to the power of leaning on the circumference that pad (39,40,41) is leaned the roller (6) of wanting grinding and adjust.

21. according to the described equipment of claim 20, it is characterized by: the device that is used to lean elastic pad (39,40,41) comprises a beidirectional pneumatic thrust cylinder, on the piston rod of each thrust cylinder, fix a pad (39,40,41), and set oneself a pressure regulator valve (44,45,46) for each pneumatic thrust cylinder.

22. according to the described equipment of claim 17, it is characterized by: the elastic pressure medium is a compressed air.

23., it is characterized by: establish some input pipes, in the zone of their feeding pad positions that reclines on roller and by them a kind of lubricant is supplied with the position that reclines according to the described equipment of one of claim 17 to 22.

24., it is characterized by: adopt grinding emulsion, synthetic cooling lubricant, grinding oil, gas or compressed air as lubricant according to the described equipment of claim 23.

25. according to the described equipment of claim 24, it is characterized by: the input pipe of guiding lubricant passes pad the recline position of pad on roller of directly leading.

26. according to the described equipment of claim 25, it is characterized by: be provided with a pad that constitutes by the elastic overcoat that is filled with a kind of elastic pressure medium (26), the input pipe that passes pad (26) guiding lubricant is designed to flexible pipe (30), the elastic overcoat of they and pad (26) is made of an integral body, and wherein lubricant and pressure medium separate each other.

27. according to the described equipment of one of claim 17 to 22, it is characterized by: the elastic overcoat of pad (34) is shaped on a plurality of outlets on it faces the abutment face of the roller (6) of wanting grinding, pressure medium passes them and flows to the position that reclines, and constitutes cooling and lubricating film.

28. according to the described equipment of one of claim 17 to 22, it is characterized by: be provided with a grinding wheel spindle case (8) that has two grinding wheel spindles (10,11), described grinding wheel spindle can be by selecting to place the operating position, the CBN emery wheel (12) of the ceramic composite of a corase grind usefulness wherein is housed on first grinding wheel spindle (10), and the CBN emery wheel (13) of the ceramic composite of a correct grinding usefulness is housed on second grinding wheel spindle (11); And, be provided with an automatic clutch, when second grinding wheel spindle (11) when being placed in the operating position, start at least one by clutch and elastic pad (15) is leaned device on the roller (6) of wanting grinding.