CN1093445A

CN1093445A - The manufacture method of friction facing and bearing assembly and device thereof

Info

Publication number: CN1093445A
Application number: CN93105216A
Authority: CN
Inventors: R·J·华德; M·格里芬; A·T·库思伯森; J·L·米林; G·T·海尔斯通
Original assignee: Automotive Products PLC
Current assignee: Automotive Products PLC
Priority date: 1992-04-11
Filing date: 1993-04-10
Publication date: 1994-10-12
Also published as: EP0589007A1; GB9325094D0; JPH06509410A; KR940701517A; GB9208057D0; WO1993021459A1; GB2272494B; GB2272494A; KR100329601B1

Abstract

A kind of method and apparatus of create friction liner and bearing assembly (2), wherein friction facing (20) (22) is bonded on the carrier (14), by adhering device (58) second liner is bonded on the branch parts then.Second liner (22) is placed in the annular reentrant part (83), and tackiness agent (24) is coated on the exposing surface of liner with the pearl shape.The support surface (84) that is placed on first liner and carrier assembly (12) goes up contiguous reentrant part, is flattened with tackiness agent to contact, and finishes in this device when starting.

Description

The manufacture method of friction facing and bearing assembly and device thereof

The present invention relates to the friction facing material of clutch driven plate and the manufacture method and the device of bearing assembly.

The liner of disclosed the sort of type and the manufacture method of bearing assembly in the WO-A-90/08908 patent application that in particular, the present invention relates to the claimant.A kind of bearing assembly has been described in this patent application, it has two kinds of configurations, first kind of configuration is that the tackiness agent with relative rigidity is bonded in friction material on the side of carrier, and second kind of configuration is that the tackiness agent with relative resilient is bonded in friction material on another side of carrier.

Carrier is formed by spring steel, and has the oar that protrudes of circumferential arranged spaced on its excircle outwardly, and friction facing is even be attached on these oars.This structure allows friction plate and carrier in upwards bending of week.The heterogeneity of two kinds of bondings that form between carrier flexible and two kinds of friction facings and carrier has caused some problems in manufacture process.

According to the present invention, the manufacture method of a kind of friction clutch and bearing assembly is provided here, wherein the first annular friction liner is bonded in first thermoset adhesive on the side of carrier of relative flexibility, and second friction facing is bonded on another side of carrier with the second elasticity synthetic rubber binder.This method comprises by first thermoset adhesive first friction facing is bonded on the carrier; Second friction facing is placed in the annular reentrant part; Second friction facing in the annular reentrant part is flattened; Tackiness agent is placed on the face that friction facing exposes, so that tackiness agent protrudes on model; The liner that carrier and first has been bondd is placed on the top of annular reentrant part, and the contiguous tackiness agent of carrier and cover annular reentrant part; Therefore flatten first friction facing and carrier, make the carrier pressurized and contact with tackiness agent and cause the initial solidification of second tackiness agent.

Say easily, at elevated temperatures, first liner is bonded on the described side of carrier, and the time cycle of lasting one section requirement, and in solidification process, make first liner and carrier in positioning work piece, under loading, keep the profile of truncated cone, so that form the liner assembly of carrier and bonding.

In addition, according to the present invention, further provide a kind of device of create friction liner and bearing assembly.Bearing assembly comprise carrier with first adhesives of relative hand hay cutter property to side of carrier first friction facing and be bonded to second friction facing on the carrier another side with the second elasticity synthetic rubber binder.This device comprises a dimeric adhering device, first portion has an annular reentrant part that has flat substrate, in order to hold second friction facing, a flat support surface, in order to support carrier, make it coaxially above reentrant part, the degree of depth of reentrant part will make that being applied to become on the liner elasticity synthesized image viscose binder of pearl shape is higher than support surface; Second portion has a part that is used for carrier and is clamped on the clamp device and pressure plate with planar surface on the described support surface, to push down the face that exposes of first liner, make first liner and carrier smooth, and carrier is contacted with the elasticity synthetic rubber binder.

Say that easily this device further comprises bonding anchor clamps, in order to first friction facing is installed on the carrier, constitutes first friction facing and bearing assembly.This bonding jig comprises a positioning work piece.Following formation device and going up of a truncated cone shape that matches that this positioning work piece has truncated cone shape form device.The following formation device of truncated cone shape is placed on the end power, and places the bearing assembly of one first liner on it at least.Going up of the truncated cone shape that matches forms device under predetermined load, assembly is clamped in form on the device.

In embodiment's mode, present invention is described below with reference to accompanying drawings.

Fig. 1 is the friction facing material of manufactured the sort of type and the front view of bearing assembly.

Fig. 2 is the amplification longitudinal section view along Fig. 1 II-II line.

Fig. 3 is the schematic flow diagram of the manufacture method of liner material and bearing assembly in the presentation graphs 1.

Fig. 4 is in manufacture process in the phase I, makes the bonding anchor clamps of the tapered the sort of type of carrier and bonding first friction facing on it.

Fig. 5 is by the elasticity synthetic rubber binder, and second friction facing is bonded to adhering device on the carrier.

Fig. 6 and Fig. 7 illustrate rigidity bonding and carrier parts.

See figures.1.and.2, represent friction material and bearing assembly, and be configured for clutch, for example the friction clutch driven disc part of Motor Vehicle diaphragm spring clutch with label 2.

The central authorities that bearing assembly 2 comprises a plate-like are the plain plate carrier 4 in cavity, and central authorities represent with label 6 in the cavity, in order to bearing assembly insertion driven disc the time, hold the hub body (not shown) that is processed with internal spline.In addition, formed some windows 10 on the carrier, the usefulness for the torsional vibration damping spring also is formed with some holes 12 on the carrier, the usefulness that stops rivet in supplying known to the expert.

On its circumference, carrier 4 have a plurality of outside protrusions, with the main body oar or the spoke 14 in aggregates of carrier.These spokes are flat, and by around the slit 16 of central axis X isogonism spaced apart basically.Under user mode, allow bearing assembly 2 rotate around axis X.

Spoke 14 that illustrates in an embodiment and slit 16 are 30.Each spoke is at the arc that upwards approximately accounts for cloth 7 degree week, and each slit accounts for the arc of cloth 5 degree greatly.If desired, can change number, size, shape and the spacing of spoke.

With regard to spoke 14 is can be along on the direction parallel with axis X substantially flexibly with regard to the meaning of crooked leaf spring, but spoke 14 is axial bendings.This just makes that carrier 4 can circumferentially wavy bending at spoke 14 places.

The first and second coaxial annular friction facings 20 and 22 are bonded to respectively on the relative face of each spoke 14.First friction facing, 20 usefulness tackiness agents 23 are bonded on the spoke.Tackiness agent 23 is REDUX80(trade marks), it is a thermosetting nitrile aerodux.Various thermoset phenolic resins and other synthetic resin adhesives all can be used as tackiness agent 23.Second friction facing, 22 usefulness tartans 24 are bonded on the spoke 14, and tartan is directly to adhere on friction facing 22 and the spoke 14.Tartan 24 is a kind of silicone rubber in this embodiment, and it becomes pearl 24a-24c sample to be arranged between liner 22 and the spoke 14.Silicon is a kind of room temperature vulcanization (RTV) material, and it is heated and facilitates curing in the atmosphere of humidity, thereby produces adhesives between liner 22 and spoke 14.Heating also has the effect that thermoset phenolic resin layer 23 is solidified.

Silicone rubber becomes starchiness to be coated on the liner.

Synthetic rubber layer 24 has suitable thickness, so that it can play the effect of elastic cushion, allows friction facing 22 to move with respect to oar 14 vertically.On the other hand, sticker layer 23 does not relatively have elasticity, does not perhaps have elasticity in fact, thus it not for or do not provide cushion with respect to oar 14 basically for friction facing 20.

Each friction facing 20,22 can both be formed by any suitable friction material, and can be non-asbestos type.

The manufacture method of friction facing and bearing assembly 2 is shown in Figure 3.

Liner

20,22 washs and removes any dirt impurity by cleaner 50.Then, first liner 20 enters into tackiness agent applicator 51, is applied at this REDUX tackiness agent on the side of liner 20.

Meanwhile, carrier 4 enters tackiness agent applicator 51 then by oil expeller 52.Liner 20 and carrier 4 enter arid region 53 together with the tackiness agent on it, remove adhesive solvent.This solvent can be removed under elevated temperature or at room temperature surpass 24 hours and also can be removed.But liner 20 recirculation are returned by tackiness agent applicator 51, so that accept second layer tackiness agent.

Liner 20 and carrier 4 are passed to assembly positioning work piece 54, at this, liner 20 are bonded on the carrier 4.The detailed structure of positioning work piece 54 is shown in Figure 4, and will be described in detail, and still, liner 20 and carrier 4 are installed on positioning work piece 54 coaxially basically, and the parts 12(that forms sees Fig. 6) under load, remain on the formation device of truncated cone shape.A plurality of parts 12 can be configured to one on another in positioning work piece 54.With one about 190 pounds/inch ₂The load of (about 13.5 crust) is applied on liner and the bearing assembly 2.Then the device of fullying recover from an illness decided of holding element 12 is put into heat cure stove 55, and remain on 180-190 ℃ and reach 5 hours, perhaps remain on 230 ℃, 240 ℃ reach 2.5 hours, and the REDUX tackiness agent is solidified, and each liner 20 is bonded on their corresponding carriers 4.

Then, the positioning work piece 54 that keeps original position to have parts 12 is shifted out from heat cure stove 55, and cooling reaches 24 hours at station 56 places to make it.Be bonded to the parts 12 of the liner 20 on the carrier 4, will be called as rigidity bonding parts hereinafter.Sticking can being returned through parts 12 of this rigidity infeeds cleaner 50, and the positioning work piece that perhaps directly goes to loading temporarily stores.

First liner 22 by cleaner 50 also remains in the positioning work piece 57 of location and stores temporarily.

Then, second liner 22 and rigidity bonding parts 12, be transferred to adhering device 58 by robot 59 from positioning work piece 57.Use 58A when this installs 58 opening states, represent with 58B during closed state.

The detailed structure of adhering device 58 is illustrated among Fig. 5.Basically second liner 22 is placed on the bottom of adhering device.One deck synthetic rubber binder 24 leans on robot 59 to be coated with as disclosed continuous pearl shape 24A in our patent application WO-A-91/10842, rigidity bonding parts 12 are placed on the bottom of adhering device simultaneously, and are coaxial with liner 22 that contacts with tackiness agent and carrier 4.Then, with the top of adhering device with the adhering device closure, so that apply a clamping load on liner and bearing assembly 2.Bearing assembly 2 kept 5-10 minute under the load of about 6-7 kilogram, reached 60 ℃ hot air with temperature simultaneously and blew over this assembly, so that the beginning solidification process.

Liner that has assembled and carrier 2 shift out with adhering device 58, enter curing oven 61 then, and about 5 minutes of 30 ℃ and 40% the little maintenance of damp condition.This has just quickened the initial solidification process.

Then, assembly 2 is loaded in storing positioning work piece 62, and enters consolidation zone 63.Herein, assembly 2 kept 24 hours under 40 ℃ temperature in water-filled atmosphere environment, forwarded to then and carried out regelate in the stove 55.

Alternative plan is that assembly 2 was kept 48 hours at ambient temperature.The regelate condition is to keep about 5 hours under 180 ℃ temperature.

The assembly of finishing 2 is prepared the assembly as test now.

Owing to solidified 5 hours down, so in twice bonding process, water has just removed from friction facing 20,22 at 180 ℃.When rigidity bonding parts 12 and the assembly 2 finished turned back to the normal equilibrium state subsequently,

liner

20,22 will absorb moisture content, and since the rebound characteristics of carrier 4, assembly 2 trend distortion.This problem can form the rigidity bonding parts 12 that remain recessed structure and be improved by in the formation device of the truncated cone shape that has liner 20.Should internal surface that be made of liner 20 and the outer surface that is made of carrier 4 be arranged recessed structure.Have been found that 1/2 taper angle can prevent that diameter from being the distortion of the liner of 267mm.Liner for other diameters needs different taper angles.

By using the assembly positioning work piece 54 shown in Fig. 4, rigidity bonding parts 12 are retained frustoconical configuration.

Assembly positioning work piece 54 comprises a lower panel 61.This lower panel has the upper surface 62 of the recessed frusta-conical surface of band, and the tapering of frusta-conical surface is 1/2 °.Lower panel 61 is installed on the spring 63 of effect between base plate 64 and the lower panel 61, so that upwards pressurization of lower panel 61.Lower panel 61 is directed on the coaxial axle sleeve 71 that is fixed on the base plate 64.Base plate 64 is placed on the framework 66, and framework 66 comprises an annular retaining circle 65, in order to place restrictions on moving upward of lower panel 61.

Hydraulic actuator 67 is placed in the coaxial cylindrical inner chamber 68 in the framework 66, and has a reciprocating piston 69.Piston 69 can be towards coaxial center pole 72 action with head 73, and head 73 can be against base plate 64, the bias voltage (shown in Fig. 4 right-hand side) that base plate 64 is moved upward overcome spring 63.

The upper end portion of pillar 72 is used for holding the nut 75 that matches with helical thread portion.Nut 75 is pressed on the upper plate 76, and this upper plate has a bottom convex frusta-conical surface 82, and its tapering is 1/2 degree, and with lower panel on recessed surperficial 62 match.

Rigidity bonding parts 12, with first carrier 4 against lower panel 61 and liner 20 placements, and liner 20 be placed on coaxially carrier 4 above.Carrier 4 is with axle sleeve 71 centering, and liner 20 is to be placed in pin 77 centering on the lower panel.These pins 77 are worn the inner end radially of slit 16 on this carrier.Many replace hold the worker coil 4 and liner 20 gathered into folds, then, make piston 69 withdrawal, and spring 63 applies a clamping load to those folded overlapping parts 12, make their become dish type.

The load that spring 63 applies is 190 pounds/inch ²(13.5 crust), and, it is contacted with upper board 76 by turning nut 75, remove spring load simultaneously.Because any pressure difference that the tolerance on the lining thickness causes can both be eliminated.

The detailed structure of adhering device 58 is shown among Fig. 5.This device comprises two-part, i.e. top 81 and bottom 82.An one annular reentrant part 83 and a flat support surface 84 are arranged at bottom 82, and reentrant part 83 has a flat substrate, be used for receiving friction facing 22, and support surface 84 is used for supporting carrier 4.Therefore, in use, the inner edge of carrier leans against the inside part radially of support surface 84, and the outer end of oar 14 leans against the exterior portion radially of support surface 84.Like this, carrier 4 just covers reentrant part 83.The degree of depth of reentrant part 83 is such, and when putting liner 22, adhesive pearl 24 will protrude on reentrant part.In this case, the about 2.8mm of diameter being arranged between liner and support surface, highly is the adhesive pearl of 2.5mm.

Center on the pin 85 circumferential spaced apart of the inner circumference configuration of support surface 84, play a part with respect to location, coaxial ground carrier 4.The pin 86 that centers on the excircle configuration of support surface 84 also helps the carrier location.

The friction facing centralising device is equipped with in bottom 82.This centralising device comprises central authorities that are connected with three circumferentially spaced radial arms 88 rotationally with axis cam 87, and radial arm 88 has the normal pin 89 that is installed in its radial outer end.The rotation of and forward reverse around the axis of cam 87 makes radial arm do turnover radially and moves, and normal pin 89 acts on the excircle of liner 22, so that liner 22 is with respect to annular reentrant part 83 centerings.

The base plate of reentrant part 83 links to each other with annular cavity 93 with passage 92 by hole 91, and annular cavity self is connected with the outlet passage 94 that can be connected to vacuum source.Second channel 95 also passes through the upper surface of bottom 82 by bottom 82.Passage 95 can link to each other with heated air source.

Top 81 comprises a clamping ring 96 that is made of arc-shaped pad spaced apart 106.In use, these arc-shaped pads are clamped to the radially the inside part of carrier 4 on the support surface 84.These clamp pad 106 are fixed on the outer cover 97, and this outer cover itself is connected with the piston 98 of fluid power or pneumatic actuator.

Outer cover 97 has a coaxial reentrant part 99 that faces down portion 81, is used for holding another actuator 101.This actuator is fixed on the outer cover, have one can be reciprocal 102, one pressure plates 103 of piston be fixed on this piston.This pressure plate can be done axial motion with respect to outer cover 97 and clamping ring 96 by actuator 101, and by being fixed on pin 104 guided-movings circumferential spaced apart and 105 guiding of the lining in the outer cover 97 on the pressure plate.

In use, liner 22 is placed in the reentrant part 83, and centers on reentrant part 83 by centering

body

87,88,89.Make the 91 one-tenth vacuum states in hole by passage 94, be in the position of its centering to keep liner.

Synthetic rubber binder 24, with the pearl pattern of hope, for example continuous helical, or the concentric ring of attachment portion is arranged between adjacent circumferential is coated on the surface that liner 20 exposes, and rigidity bonding parts 12 are placed on the reentrant part 83, and by pin 84 centerings.

Then, top 81 is moved, so that clamping ring 96(dots by actuator 98) keep the inside of carrier 4 partly to lie on the support surface 84.

Then, pressure plate 103 is moved, make it smooth, and force carrier 4 to contact with the pearl of tackiness agent so that tightly suppress liner 20 by actuator 101.Actuator 101 applies about 7 kilograms load.

Then, 60 ℃ hot airs by passage 95, are led to reentrant part 83 again, so that hot air circulates in assembly 2, and, make it initial solidification around tackiness agent 24.

Claims

1, a kind of method of create friction liner and bearing assembly, wherein the annular friction liner is bonded on the side of flexible carrier flexibly with first thermoset adhesive, and second friction facing is bonded on the another side of carrier with the second elasticity synthetic rubber binder, and this method comprises with first thermoset adhesive first friction facing is bonded on the carrier; Second friction facing is placed on annular reentrant part; Flatten second friction plate in the annular reentrant part; Tackiness agent is placed on the face that friction facing exposes, so that tackiness agent protrudes on model; The liner that carrier and first has been bondd is placed on the top of annular reentrant part, and the contiguous tackiness agent of carrier and cover annular reentrant part; Therefore flatten first friction facing and carrier, make the carrier pressurized and contact, and cause the initial solidification of second tackiness agent with tackiness agent.

2, as the method in the claim 1, wherein load is being put between the liner, the inner circumference of carrier is leaned against on the bed die by folder.

3, as the method in claim 1 or 2, wherein tackiness agent is coated on the friction facing with the form of concentric circle pearl or helical, and hot air is blown over mould impression, and the elasticity synthetic rubber binder is carried out initial solidification simultaneously, and loads.

4, as any one method in the claim 1 to 3, wherein, liner that assembles and carrier carry out regelate at three phases, for the first time 30 ℃ temperature, solidified 40-60 minute under about 40% the humidity, be shelved in the atmosphere environment that is full of moisture for the second time, solidified 24 to 48 hours down, be heated to 180 ℃ for the third time and reach 5 hours at 40 ℃.

5, as any one method in the claim 1 to 4, wherein at elevated temperatures first liner is bonded on the described side of carrier, the time cycle that keeps a requirement, and in solidification process, first liner and carrier remain in the positioning work piece, under load, become frustoconical configuration, so that constitute the assembly of carrier and bonding liner.

6, as the method in the claim 5, wherein frustoconical configuration is one to have the external conical surface that formed by carrier and the concave structure of the internal surface that formed by first liner.

7, the device of liner and bearing assembly creates friction, bearing assembly comprises a carrier and with the adhesives of first relative rigidity friction facing to the side of carrier, and be bonded to second friction facing on the carrier another side with second synthetic rubber binder, this device comprises a dimeric adhering device, first portion has an annular reentrant part that Ping Jidu is arranged, be used for holding second friction facing, flat support surface is used for a carrier and is supported in coaxially on the reentrant part, and the degree of depth of reentrant part will make the synthetic rubber binder that is coated on the liner with the pearl shape be higher than support surface; Second portion has a part that is used for carrier and is clamped to clamp device and the pressure plate with planar surface on the described support surface, in order to push down the face that exposes of first liner, so that first liner and carrier are smooth, and carrier is contacted with the elasticity synthetic rubber binder.

8, as the device in the claim 7, wherein the Ping Jidu of the annular reentrant part in the adhering device has some eyelets, and these eyelets lead to reentrant part, and can link to each other with vacuum source, so that make reentrant part reach vacuum state.

9, as any one device in the claim 12 to 14, wherein reentrant part can link to each other with the atmosphere of gaseous state.

10, as any one device in the claim 7 to 9, wherein the first portion of this device comprises the device of a cam control, and this device acts on the excircle of second friction facing, and described liner is centered with respect to reentrant part.

11, as any one device in the claim 7 to 10, wherein said clamp device comprises clamp pad that is connected with first actuator and the pressure plate that flattens first liner, this pressure plate is connected with second actuator, with so that clamp pad independently move axially.

12, as any one device in the claim 7 to 11, wherein pressure plate is a flat board, and it cooperates with the first portion of adhering device and forms a passage, so that deliver fluids into the model reentrant part, causes synthetic rubber binder to be solidified.

13, as any one device in the claim 7 to 12, comprise that further one is used for first friction facing is installed to carrier, to form the bonding anchor clamps of first friction facing and bearing assembly, these bonding anchor clamps comprise a positioning work piece, this positioning work piece has the following formation device of the truncated cone shape on a base plate, on the following formation device of truncated cone shape, place one first liner and bearing assembly at least, with the last device that forms of a truncated cone shape that matches, in order under predetermined load, this assembly is clamped on the following formation device.

14, as the device in the claim 13, wherein positioning work piece can hold by what a plurality of described liners and bearing assembly were formed and stacks thing.

15, as the device in claim 13 or 14, wherein clamping load is applied by spring.