A kind of flexible thin-wall bearing special fixture
Technical field
The present invention is a kind of flexible thin-wall bearing special fixture, is particularly suited in flexible thin-walled bearing performance test experiments
Flexible thin-wall bearing is loaded into clamping device in platform, so as to simulate the dynamic test for static load under flexible thin-wall bearing actual condition, tired
Labor life test, accuracy test etc., belong to mechanical design field.
Background technology
Harmonic speed reducer as industrial robot key foundation part, with high accuracy, high-bearing capacity, gear range
It is the bottleneck of current domestic industry of industrial robots to the research and development of its technology the features such as wide.Flexible thin-wall bearing is that harmonic wave subtracts
The core component of fast device, the overall performance to harmonic speed reducer plays vital effect.Flexible thin-wall bearing is in work shape
Under state, be subjected to thin-wall bearing inner ring precision-fit elliptical shaft it is crowded swollen under elastic deformation, and still suffer from because from
The alternate stress that body operating is produced, and in the case where operating mode is undesirable, still suffer from from extraneous different static load or dynamic
Carry power.Therefore, in R&D process of the harmonic speed reducer with flexible thin-wall bearing, it should to flexible thin-walled antiwhip,
Rotating accuracy and life-span are tested, and ability invested in plant metaplasia is produced after properties reach requirement, and then solves China
The bottleneck problem of industrial robot kernel component, for the industrialization and extensive use of realizing China's industrial robot provide branch
Support.
Flexible thin-wall bearing as harmonic speed reducer key components and parts, its rotating accuracy and stabilization under different operating modes
Property has very important effect to harmonic speed reducer overall performance.The geometrical cross-sectional shape of flexible thin-wall bearing is circle,
It is changed into oval in harmonic speed reducer after stand under load.Therefore, in the performance under simulating flexible thin-wall bearing actual condition, flexible thin
Wall bearing inner race needs to be inserted in the axle journal of ellipse.The present invention realizes for flexible thin-walled bearing holder (housing, cover) entering oval axle journal, solves flexible
The circular inner ring of thin-wall bearing is not easy the problem assembled with oval axle journal.
The content of the invention
It is an object of the invention to provide a kind of efficient, easy to operate and stabilization, a kind of flexible thin-wall bearing of reliable operation
Special fixture.
The purpose of the present invention is achieved through the following technical solutions with conception:
A kind of flexible thin-wall bearing special fixture, including parallel jaw, free clamp body, installation shaft assembly,
Described installation shaft assembly includes blind rivet, bearing fixing body and flexible thin-wall bearing clamping device, the bearing fixing body
Including shaft-like main body, the front portion of the shaft-like main body is provided with the oval axle for realizing flexible thin-wall bearing radial positioning
Neck, rear portion sets conus portion, and the blind rivet connect setting clamps dress in the end of the conus portion, described flexible thin-wall bearing
Put to be removably secured and be arranged on the oval neck both sides, for realizing flexible thin-walled bearing axle to positioning;
Described condensing tube tongs specifically includes fixture pallet, fixture and the axis of guide, and the fixture pallet includes symmetrically arranged fixture
Dynamic supporting plate and the quiet supporting plate of fixture, between tiger's jaw two parts of parallel jaw, the fixture includes symmetrically arranged dynamic fixture
With quiet fixture, the dynamic supporting plate of fixture is connected with dynamic fixture by dynamic soket head cap screw, and dynamic fixture is located at the dynamic supporting plate top of fixture, folder
Have quiet supporting plate to be connected by quiet soket head cap screw with quiet fixture, and quiet fixture is located at fixture quiet supporting plate top, the dynamic fixture and
Quiet fixture is connected by the axis of guide, is encircled into the oval clamping hole of the flexible thin-walled bearing outer ring of clamping.
Further, the end of the conus portion is provided with screwed hole, is provided with the blind rivet and the screwed hole phase
The external screw thread of connection.
Further, the taper ratio of the conus portion is 7:24.
Further, described flexible thin-wall bearing clamping device includes two halves formula flexibility thin-walled bearing inner race back-up ring, soft
Property thin-wall bearing retainer back-up ring, hexagon socket head cap screw, anti-decylization, in described oval neck, two halves formula flexibility thin-wall bearing
The bolt being engaged with the hexagon socket head cap screw is circumferentially evenly arranged with circle back-up ring, flexible thin-walled retainer back-up ring
Hole, the anti-decylization connects each hexagon socket head cap screw, and the through hole for installing anti-decylization is provided with each hexagon socket head cap screw.
Further, the thickness of the oval neck is than the flexible big 0.01-0.05mm of thin-walled bearing inner race thickness.
Further, described two halves formula flexibility thin-walled bearing inner race back-up ring, flexible thin-walled retainer back-up ring it is interior
Bore dia matches with the shaft-like main diameter.
Further, the card for preventing bearing fixing body from relatively rotating is additionally provided with the middle part of described bearing fixing body
Mouthful.
Further, described bayonet socket includes an annular V groove, two stop being symmetrically disposed at the annular V groove
Plane.
Further, the dynamic fixture and quiet fixture both sides are respectively oppositely provided with the guiding being located along the same line
Hole, described axis of guide one end is fixedly connected with the pilot hole in quiet fixture, and the other end pilot hole relative with dynamic fixture is slided
It is dynamic to coordinate.
Further, the opposite face of the dynamic fixture and quiet fixture is each provided with the shoulder hole coaxial with the pilot hole,
Compression spring is provided with the axis of guide, the two ends of the compression spring are closely against in relative shoulder hole respectively, work as flat mouth
After the tiger's jaw of vice is opened, dynamic fixture and quiet fixture unclamp automatically under the restitution of compression spring.
Compared to existing technology, the present invention is realized and for flexible thin-walled bearing holder (housing, cover) to enter oval axle journal, solves flexible thin-wall bearing
Circular inner ring be not easy with oval axle journal assemble problem, be flexible thin-wall bearing performance test experiment clamping operation carry
For supporting, simple structure, easy to operate, stable mechanical performance reliability.
Brief description of the drawings
Fig. 1 is the axle geodesic structure schematic diagram of the embodiment of the present invention.
Fig. 2 is the schematic front view of the embodiment of the present invention.
Fig. 3 is the schematic top plan view of the embodiment of the present invention.
Fig. 4 is the schematic cross-sectional view in A-A directions in Fig. 3.
Fig. 5 is the left view schematic diagram of the embodiment of the present invention.
Fig. 6 is the schematic top plan view that free clamp body does not close.
Fig. 7 is the schematic cross-sectional view in B-B directions in Fig. 6.
Fig. 8 is the bearing fixing body axle geodesic structure schematic diagram of the embodiment of the present invention.
Fig. 9 is the bearing fixing body schematic front view of the embodiment of the present invention.
Figure 10 is the schematic cross-sectional view in C-C directions in Fig. 9.
Figure 11 is the bearing fixing body left view schematic diagram of the embodiment of the present invention.
Shown in figure:1 it is handle, 2 be base support body, 3 be tiger's jaw sliding block, 4 be the dynamic fixture block of tiger's jaw, 5 is the dynamic support of fixture
Plate, 6 be dynamic fixture, 7 be the quiet supporting plate of fixture, 8 be quiet fixture, 9 be the quiet fixture block of tiger's jaw, 10 be quiet fastening bolt, 11 be bearing peace
Dress body, 12 for flexible thin-wall bearing, 13 for dynamic fastening bolt, 14 be screw rod, 15 be sleeve, 16 be spiral pieces, 17 to be oriented to
Axle, 18 be dynamic soket head cap screw, 19 be quiet soket head cap screw, 20 be blind rivet, 21 be two halves formula flexibility thin-walled bearing inner race back-up ring,
22 is flexible thin-walled retainer back-up ring, 23 is hexagon socket head cap screw, 24 is oval neck, 25 is anti-decylization.
Specific embodiment
Following specific embodiment is described in further detail to the purpose of the present invention, and embodiment can not go to live in the household of one's in-laws on getting married one by one herein
State, but therefore embodiments of the present invention are not defined in following examples.
As shown in accompanying drawing 1 to accompanying drawing 11, a kind of flexible thin-wall bearing special fixture, including parallel jaw, free clamp body,
Installation shaft assembly,
Described installation shaft assembly includes blind rivet 20, bearing fixing body 2 and flexible thin-wall bearing clamping device, and the bearing is installed
Body 11 includes shaft-like main body, and the front portion of the shaft-like main body is provided with the ellipse for realizing the radial positioning of flexible thin-wall bearing 12
Shape axle journal 24, it is 7 that rear portion sets taper ratio:24 conus portion, the connect setting of the blind rivet 20 is in the end of the conus portion, institute
The flexible thin-wall bearing clamping device stated is removably secured and is arranged on the both sides of the oval neck 24, for realizing flexible thin
The axially position of wall bearing 12;
Described condensing tube tongs specifically includes fixture pallet, fixture and the axis of guide 17, and the fixture pallet includes symmetrically arranged folder
Tool dynamic supporting plate 5 and the quiet supporting plate 7 of fixture, between tiger's jaw two parts of parallel jaw, the fixture includes symmetrically arranged dynamic
Fixture 6 and quiet fixture 8, the dynamic supporting plate 5 of fixture are connected with dynamic fixture 6 by dynamic soket head cap screw 18, and dynamic fixture 6 is dynamic positioned at fixture
The top of supporting plate 5, the quiet supporting plate 7 of fixture is connected with quiet fixture 8 by quiet soket head cap screw 19, and quiet fixture 8 is located at the quiet supporting plate 7 of fixture
Top, the dynamic fixture 6 is connected with quiet fixture 8 by the axis of guide 17, is encircled into the ellipse of the flexible outer ring of thin-wall bearing 4 of clamping
Clevis holds hole.Described condensing tube tongs carrys out clamping and positioning especially by the dynamic fixture block 4 of tiger's jaw and the quiet fixture block 9 of tiger's jaw, by the axis of guide 17
Two oval centers of circle of fixture block is overlapped, oval clamping hole is constituted after merging.
Described flexible thin-wall bearing 12 is placed on the specific top of condensing tube tongs, and condensing tube tongs specifically moves fixture 6 and quiet fixture 8
The circular outer ring of the elliptical inner clamping thin-wall bearing 12 of composition, described dynamic fixture 6 and quiet fixture 8 realizes flexible thin-wall bearing
12 radial positioning;The axial position of the flexible thin-wall bearing 12 of fixture pallet limitation of the dynamic supporting plate 5 of fixture and the quiet composition of supporting plate 7 of fixture
Move, it is ensured that the accuracy that bearing fixing body 11 is assembled with flexible thin-wall bearing 12.The circular outer ring of flexible thin-wall bearing 12 is dynamic
It is changed into oval in the presence of the elliptical inner of fixture 6 and the composition of quiet fixture 8, with proper implements by the ellipse of bearing fixing body 11
The inner ring of the flexible thin-wall bearing 12 of circular shaft neck press-in.
Parallel jaw described in the present embodiment includes base support body 2, screw distance adjusting part, tiger's jaw clamp body, described
Screw distance adjusting part is located inside base support body 2;A described tiger's jaw clamp body part is fixed on base support body 2, separately
A part links together with screw distance adjusting part, and can be moved in the upper surface of base support body 2;Described free clamp body is put
Put on base support body 2, and between tiger's jaw clamp body two parts;Described flexible thin-wall bearing 12 is placed on freedom
Clamp body top, the circular outer ring of the specific ellipse endoporus clamping flexibility thin-wall bearing 12 of condensing tube tongs;Described bearing is installed
The oval neck 24 of body 11 suitable tools load the inner ring of flexible thin-wall bearing 12.
Described base support body 2 is the cast iron seat of inner hollow, its upper surface and tiger's jaw clamp body and free clamp body
Fit, and lubricating oil antirust need to be applied.
Described screw distance adjusting part includes handle 1, screw rod 14, sleeve 15 and spiral pieces 16.Described sleeve 15 is put
In the through hole of the one end of base support body 2, screw rod 14 is stretched into inside base support body 2 through sleeve 15, the threaded portion of screw rod 14
Divide inwardly, outwardly, the internal thread of spiral pieces 16 is engaged square head portion with the external screw thread of screw rod 14, convex on spiral pieces 16
Type is designed and is engaged with the groove design on the specific tiger's jaw sliding block 3 of take-up clip, is connected to spiral pieces 16 and tiger's jaw sliding block 3
Together, handle 1 is enclosed within the square toes of screw rod 14, screw rod 14 is produced screw by rotating handle 1, realizes screw distance adjusting.
Described take-up clip specifically includes the quiet fixture block 9 of the dynamic fixture block 4, tiger's jaw of tiger's jaw sliding block 3, tiger's jaw, the and of quiet fastening bolt 10
Dynamic fastening bolt 13.Described quiet fastening bolt 10 is fixed on tiger's jaw quiet fixture block 9 on base support body 2;On tiger's jaw sliding block 3
Groove is designed and is engaged with the convex design on spiral pieces 16, spiral pieces 16 and tiger's jaw sliding block 3 is linked together, it is ensured that
Tiger's jaw sliding block 3 can only do motion in one dimension along the upper surface of base support body 2;And tiger's jaw sliding block 3 passes through with the dynamic fixture block 4 of tiger's jaw
Dynamic fastening bolt 13 is connected, so that the dynamic fixture block 4 of tiger's jaw also can only do motion in one dimension along the upper surface of base support body 2.Base
The convex design at the end of installation sleeve 15 of supporting mass 2 prevents tiger's jaw sliding block 3 and the dynamic fixture block 4 of tiger's jaw to skid off outside base support body 2.
The end of the conus portion is provided with screwed hole, and be connected with the screwed hole outer is provided with the blind rivet 20
Screw thread.
Described flexible thin-wall bearing clamping device includes two halves formula flexibility thin-walled bearing inner race back-up ring 21, flexible thin wall shaft
Retainer back-up ring 22, hexagon socket head cap screw 23, anti-decylization 25 are held, the two halves formula flexibility thin-walled bearing inner race back-up ring 21 is by two pieces of shapes
Shape identical arcuate structure is constituted, described oval neck 24, two halves formula flexibility thin-walled bearing inner race back-up ring 21, flexible thin-walled
The bolt hole being engaged with the hexagon socket head cap screw 23, the anti-decylization are circumferentially evenly arranged with retainer back-up ring 22
25 connect each hexagon socket head cap screw 23, and the through hole for installing anti-decylization 25 is provided with each hexagon socket head cap screw 23.The ellipse
The thickness of shape axle journal 24 is than the big 0.01-0.05mm of inner ring thickness of flexible thin-wall bearing 12.
Described two halves formula flexibility thin-walled bearing inner race back-up ring 21, the diameter of bore of flexible thin-walled retainer back-up ring 22
Match with the shaft-like main diameter.
The middle part of described bearing fixing body 11 is additionally provided with the bayonet socket for preventing bearing fixing body 11 from relatively rotating.Institute
The bayonet socket stated includes an annular V groove, two stop surfaces being symmetrically disposed at the annular V groove.
As shown in Figure 6 and Figure 7, the dynamic fixture 6 and the both sides of quiet fixture 8 are respectively oppositely provided with and are located along the same line
Pilot hole, described one end of the axis of guide 17 is fixedly connected with the pilot hole in quiet fixture 8, and the other end is relative with dynamic fixture 6
Pilot hole be slidably matched.The opposite face of the dynamic fixture 6 and quiet fixture 8 is each provided with the ladder coaxial with the pilot hole
Hole, is provided with compression spring on the axis of guide 17, the two ends of the compression spring are closely against in relative shoulder hole respectively, when
After the tiger's jaw of parallel jaw is opened, dynamic fixture 6 and quiet fixture 8 unclamp automatically under the restitution of compression spring.
The operation principle of the present embodiment is as follows:
The present embodiment drives screw rod 14 to rotate by rotating handle 1, and screw rod 14 is connected through a screw thread with spiral pieces 16, works as spiral shell
When bar 14 rotates, spiral pieces 16 are moved along a straight line, and realize conversion of the rotary motion to linear motion.On spiral pieces 16
Convex design with the specific tiger's jaw sliding block 3 of take-up clip groove design be engaged, connect spiral pieces 16 and tiger's jaw sliding block 3
It is connected together, and tiger's jaw sliding block 3 is connected with the dynamic fixture block 4 of tiger's jaw by dynamic fastening bolt 13, so that tiger's jaw sliding block 3 and tiger's jaw are dynamic
Fixture block 4 can only do motion in one dimension along the upper surface of base support body 2.
The dynamic supporting plate 5 of fixture is assembled together with dynamic fixture 6 with dynamic soket head cap screw 18 first during operation, with quiet interior hexagonal spiral shell
With quiet fixture 8 be assembled together the quiet supporting plate 7 of fixture by nail 19.Free clamp body is placed on the upper surface of base support body 2, and is located at
Tiger's jaw is dynamic, and half is contacted with the quiet fixture block 9 of tiger's jaw between fixture block 4 and the quiet fixture block 9 of tiger's jaw, and second half is contacted with the dynamic fixture block 4 of tiger's jaw.Will
Flexible thin-wall bearing 12 is placed in the fixture pallet of the dynamic supporting plate 5 of fixture and the quiet composition of supporting plate 7 of fixture, its outer ring and dynamic fixture 6
And quiet fixture 8 is contacted.Dynamic fixture 6 and quiet fixture 8 are connected with the axis of guide 17.
Then the adjusting screw rod 14 of handle 1 is used, the distance between the quiet fixture block 9 of tiger's jaw and the dynamic fixture block 4 of tiger's jaw, the two of fixture is tightened up
Half is subject to the thrust of the quiet fixture block 9 of tiger's jaw and the dynamic fixture block 4 of tiger's jaw so as to be combined, and fixture 6 and quiet fixture 8 is formed ellipse
Endoporus.Meanwhile, the outer ring of flexible thin-wall bearing 12 and inner ring are in the presence of the elliptical inner of dynamic fixture 6 and the composition of quiet fixture 8
It is forced to be changed into oval.
Then the oval axle journal 24 of bearing fixing body 11 is pressed into the flexible thin-wall bearing 12 after deformation with suitable instrument
Inner ring.The dynamic supporting plate 5 of fixture ensure that the oval axle journal and flexible thin wall shaft of bearing fixing body 11 with the boss design of dynamic fixture 6
Hold the accurate type of the rigging position of 12 inner ring.
The embodiment is only preferably example of the invention, is not the restriction to embodiment of the present invention, right
For those of ordinary skill in the art, can also be made on the basis of the explanation other multi-forms change or
Change, it is all to be made within the spirit and principles in the present invention there is no need and unable to being exhaustive to all of implementation method
Any modification, equivalent and improvement etc., should be included within claims of the invention.