CN107649890A - One kind is based on high-precision spiral master gear and worm geared precision indexing turntable and assembly method - Google Patents
One kind is based on high-precision spiral master gear and worm geared precision indexing turntable and assembly method Download PDFInfo
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- CN107649890A CN107649890A CN201710833502.6A CN201710833502A CN107649890A CN 107649890 A CN107649890 A CN 107649890A CN 201710833502 A CN201710833502 A CN 201710833502A CN 107649890 A CN107649890 A CN 107649890A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000010030 laminating Methods 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 238000010276 construction Methods 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 18
- 239000000428 dust Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 239000003921 oil Substances 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 239000010687 lubricating oil Substances 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 229910001315 Tool steel Inorganic materials 0.000 claims description 2
- 230000001815 facial effect Effects 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 210000000515 tooth Anatomy 0.000 claims 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000003754 machining Methods 0.000 abstract description 13
- 238000012360 testing method Methods 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 239000011324 bead Substances 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/08—Protective coverings for parts of machine tools; Splash guards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
- B23Q16/02—Indexing equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/02—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby of table type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gear Transmission (AREA)
- Gears, Cams (AREA)
Abstract
The invention belongs to Precision Machining and technical field of measurement and test, it is proposed that one kind is based on high-precision spiral master gear and worm geared precision indexing turntable and assembly method, drive and have worm screw and the helical gear helical angle engaged transmission of auto-lock function using opened loop control and high-precision harmonic motor；Back clearance between worm screw and spiral master gear is eliminated using extension spring anti-backlash mechanism, reduces the reverse idle stroke error of circular dividing table；Circular dividing table uses high precision dense bead shafting structure using radial reference, and the leveling effect of error can make the radial composite error of circular dividing table be less than 0.5 μm；Axial benchmark uses laminating sliding bearing structure, and there is high rigidity and absorbing to act on.It is " following that the indexing accuracy of the superior circular dividing table is assembled up to 10.Interrupted division or continuous division at any angle can be achieved in the present invention, has the advantages of simple in construction, indexing accuracy is high, the rigidity of structure is high, indexing accuracy is stable, cost is low, Precision Machining and test occasion available for underloading.
Description
Technical field
The invention belongs to Precision Machining and technical field of measurement and test, is related to a kind of processing and test for precision indexing element
Index table.
Background technology
Index table is machining and a very important device in testing field, and its core indexing component mainly has
The several types such as worm and gear, rack-and-pinion, sheave, index dial, end-toothed disc and direct driving motor.Wherein, end tooth indexing means
Indexing accuracy highest, typically can reach 0.5 ", can reach 0.1 "；Next to that indexing disc type indexing means, highest indexing essence
For degree up to 5 "~10 ", general indexing accuracy is 10 "~30 ".But this two classes indexing component uses opened loop control, indexing essence more
Degree depends entirely on the indexing accuracy of indexing component itself, and can not realize continuous division at any angle.It is straight to drive indexing mode
It is a kind of high-accuracy high-efficiency indexing mode to grow up in recent years, it eliminates mechanical dividing element, utilizes closed-loop control
Technology realizes the direct Continuous Drive of torque motor, and indexing accuracy may be up to 5 "~15 ", however use the indexing mode into
This is higher, and indexing stability is also high without the precision of mechanical dividing device.
The control form of high-precision dividing apparatus has open loop and closed-loop and semiclosed loop three types, steady from cost and indexing
Qualitatively said in angle, opened loop control cost is relatively low, and indexing stability is preferable；Closed-loop control cost is higher, indexes stability one
As；Half-closed loop control falls between.
Vibration and noise are small, excellent with auto-lock function etc. greatly, in transmission process with single staged transmission ratio for Worm Wheel System
Point, extensively using in the indexing system in being equipped with machine-building.In open-loop control system, the indexing essence of Worm Wheel System
Degree depends primarily on the machining accuracy of worm and gear, and manufacturing cost is relatively low, and indexing accuracy is typically 1 '~3 '；In closed-loop control
In system, the indexing accuracy of Worm Wheel System depends primarily on machining accuracy and the feedback detection grating encoding of worm and gear
The indexing accuracy of device, indexing accuracy can be to 30 "~1 ' then manufacturing cost it is higher.
Because the manufacturing cost of worm gear is higher, and the highest accuracy of manufacture is 3 grades.Therefore, it is less demanding in indexing accuracy
Occasion under commonly use helical gear and replace worm gear, transmission is engaged using worm screw and helical gear.Such as vehicle shift is held
Row mechanism (ZL 2010202211182.4), vehicular clutch executing agency (ZL 2010202211169.9), car light, which turn to, to be driven
Dynamic device (ZL 201120094520.5), vehicle steering shaft control (ZL 201320170000.7) and manual window opening machine (ZL
20152100426.0) etc., the helical gear and worm screw for employing low cost are driven.Because helical gear and worm screw pass
It is point contact during dynamic, therefore the kind of drive of the type is not suitable for the occasion of heavy duty；In addition, the biography of worm screw and helical gear
Dynamic precision depends primarily on the machining accuracy of helical gear, to improve its indexing accuracy, need to use high-class helical tooth
Wheel.
The content of the invention
To solve the problems, such as that existing indexing means cost performance is not high, the invention provides one kind to be based on high-precision spiral standard
Gear and worm geared precision indexing turntable,
Concrete technical scheme is：One kind is based on high-precision spiral master gear and worm geared precision indexing turntable, wraps
Include circular table, dust cover, stiffening ring, circular dividing table base, spiral master gear, pressure ring, protecting cover, close pearl axle sleeve A, mandrel, axle
Bearing, close pearl axle sleeve B, plastic sheet, support base, worm screw, Triangulum vertical shaft, close pearl axle sleeve C, worm screw case, small track base, flat close pearl
Plate, handle, compensation ring, ring flange, yielding coupling, clutch seat, adapter sleeve, flange shaft, spring adjusting screw, vertical bearing, drawing
Spring, spring base, eccentric shaft, knob, knob bearing, harmonic motor；
Plane is circumferentially provided with symmetrical T-slot and uniform workpiece connection screw thread hole on circular table, for workpiece or
The connection of fixture；The flatness of plane is less than 2 μm on circular table, and the end face beat after assembling is not more than 5 μm；Under circular table
Face is provided with raised annulus end face, uniform screwed hole on end face, is the installation locating surface of master gear, for spiral master gear
Fixation；The flatness error of circular table lower surface is less than 1 μm, is less than 2 μm with the parallelism error in upper table face；Sired results
Make the annular groove for 2~3mm that platform bottom surface has width to be more than dust cover wall thickness, labyrinth seal is formed with dust cover top structure；Sired results
Make to be additionally provided with oil filler point on platform, be easy to the lubricating oil of filling lubrication worm screw and spiral master gear；
Dust cover is rolled from 1~2mm steel plate and formed, and bottom is welded and fixed with stiffening ring, and is led to circular dividing table base
Cross bolt connection；Dust cover and stiffening ring junction stay a breach to prevent from interfering with worm screw case；
Big angle is fallen in the generally square sheet material of circular dividing table base, corner, is cast and processed using cast iron materials；Upper table
Facial plane degree error is less than 3 μm, is machined with for connecting mandrel, support base, Triangulum vertical shaft, vertical bearing, knob bearing, dust-proof
The screwed hole of the parts such as cover stiffening ring；Its bottom surface uses closed-in construction, and the annulus of circumferential side frame and intermediate projections is coplanar, flatness
Error is less than 5 μm, is less than 5 μm with the parallelism error in upper table face；Uniform four are provided among bottom surface frame and annulus
Reinforcement, for improving the rigidity of structure of circular dividing table base；
The helical angle of spiral master gear is equal to the lead angle of worm screw, transverse module mt=0.5~1mm, due to spiral shell
The contact area for revolving gear with worm screw is the point contact on a certain section, therefore in the condition for ensureing the helical gear rigidity of structure
Under, the facewidth is the smaller the better；The indexing accuracy of the circular dividing table depends primarily on the tooth pitch precision of spiral master gear, according to using field
Close, the tooth pitch precision of spiral master gear is more than 3 grades precision (GB/T 10095.1-2008)；Spiral master gear is axially fixed
Position reference plane is not more than 2 μm relative to the end face beat of interior axially bored line；Spiral master gear is fixed on circular table by pressure ring
On；The coaxiality of inner hole error of the endoporus and bearing block that assemble rear screw master gear is not more than 1 μm, the rotation of spiral master gear
The parallelism error for turning the relatively former work top of locating surface is not more than 2 μm；
Support base is bowl shaped structure, and upper ring surface is axially mounted locating surface, and bears circular table, bearing block, close pearl axle
Cover A, spiral standard and to be processed or test tool part weight；Lower anchor ring is determined for the installation of support base and circular dividing table base
Plane, the respective flatness error of two anchor rings are not more than 2 μm, and parallelism error is not more than 2 μm；An annular groove is set among upper ring surface,
For storing lubricant grease, laminating tablet, and being handled by scraping thereon；Support base after laminating plays the work of sliding bearing
With；
Mandrel includes a bottom surface and two shaft part compositions；Upper shaft part is the radial reference of index table, and circularity is less than 0.5
μm, for cylindricity less than 1 μm, the error of perpendicularity of axis and bottom surface is less than 2 μm；The shaft part passes through close pearl axle sleeve A and close pearl axle sleeve B
Coordinate respectively with bearing block and spiral master gear；The spherical rolling body of G5 levels above precision selected by close pearl axle sleeve and axle and hole
The unilateral magnitude of interference be 0~3 μm；It is radially installed base of the mandrel relative to circular dividing table base that lower shaft end cylindricity, which is no more than 3 μm,
Standard, coordinate with circular dividing table base mandrel positioning hole for gap；
Triangle vertical shaft is connected on base, its axis passes through close pearl axle sleeve C connecting worm casees one end, worm screw perpendicular to base
Case is with respect to triangle vertical shaft rotating；The worm screw case other end is connected with adapter sleeve, and its underrun is put down close pearl plate and is fixed on base
Small track base coordinate, formed a sliding bearing；Adapter sleeve is connected with spring base close to the side of helical gear, in vertical bearing
Extension spring is provided between spring base, for worm screw case to be pulled into spiral master gear, to eliminate the worm screw in worm screw case with tiltedly
Radial clearance between gear；Spring adjusting screw passes through vertical bearing to be connected with extension spring, adjustable by adjusting spring adjusting screw
Save the pressure between worm screw and spiral master gear；Adapter sleeve opposite side is connected with clutch seat, and its endoporus is matched somebody with somebody with eccentric shaft clearance
Close；Handle is connected by knob with the interference of eccentric shaft upper end, facilitates the manual actuation of eccentric shaft, to realize worm screw and helical gear
Quick separating；
Worm screw is connected in worm screw case by angular contact ball bearing；The order of connection is by inner and outer be respectively：Angular contact ball axle
Hold A, worm screw, angular contact ball bearing B, compensation ring, ring flange, yielding coupling, flange shaft harmonic motor.
Further, above-mentioned bearing block and mandrel use GCr15 materials, and are not less than using quenching subzero treatment, hardness
HRC58；Spiral master gear is using 40Cr materials and using quenching subzero treatment, hardness HRC45~50；Worm screw uses
38CrMoAlA tool steel materials, surfaces nitrided processing, more than hardness HV830.
The above-mentioned assembly method based on high-precision spiral master gear and worm geared precision indexing turntable, including it is as follows
Step：
Step 1, mandrel is connected by screw on circular dividing table base；
The upper reference plane of the datum clamp face of mandrel and circular dividing table base is cleaned up, then applies one layer of lubricating oil；With
Circular dividing table base is installed on the basis of the shaft part of mandrel；The countersunk head screwed hole connection suspension ring of circular dividing table base corner, for circular dividing table
Carrying；
Step 2, support base is installed on circular dividing table base；
Using the axis of mandrel as radial reference, the upper reference plane for being circular dividing table base is axial benchmark installation village support base；
Laminating scraping processing is carried out to reference plane on support base before installation, laminating material thickness is 0.707~1mm；Surveyed before and after laminating
The parallelism error that reference plane on support base installs positioning reference plane relative to support seat is measured, has ensured that polytetrafluoroethylplastic plastic piece
The uniformity of thickness, so that it is guaranteed that the precision and rigidity of the device axial direction reference for installation；
Step 3, spiral master gear and bearing block are installed on circular division platform；
First by spiral master gear by pressure ring and mode connects for screw to circle platform, and adjust spiral master gear endoporus
Axis overlaps with circular table external cylindrical surface axis, then successively loads close pearl axle sleeve B, bearing block and close pearl axle sleeve A；With support
Reference plane is axial benchmark on seat, rotates circular table as radial reference using mandrel and close pearl axle sleeve B, progressively will in rotation process
The attachment screw of bearing block is tightened by diagonal order, thus ensure that bearing block and spiral master gear endoporus to greatest extent
Axiality；Finally circular table UNICOM bearing block, spiral master gear and pressure ring are removed together, together to the axle after assembling
The endoporus attrition process of bearing endoporus and spiral master gear；
Step 4, worm screw and anti-backlash mechanism are installed；
Triangulum vertical shaft, vertical bearing, knob bearing and small track base are connected by screw on circular dividing table base first,
And the guardrail of close pearl plate stroke is put down in connection limitation on small track base, and then flat close pearl plate is put into guardrail；Then by worm screw
Shafting loads in worm screw case；Erection sequence is angular contact ball bearing, worm screw, angular contact ball bearing, compensation ring, ring flange, elasticity
Shaft coupling, flange shaft harmonic motor；According to fit-up gap by grind adjust compensation ring thickness, with eliminate worm screw relative to
Worm screw case axial gap；Adapter sleeve is connected together by screw with worm screw case, and harmonic motor passes through screw and adapter sleeve
Connect together；Then installation installation spring base and clutch seat on adapter sleeve；
Then the worm screw case with after is connected on Triangulum vertical shaft by close pearl axle sleeve C, adapter sleeve is put into flat close pearl plate
On；One end of extension spring is connected on spring base, the other end is connected on spring adjusting screw, is grown by the work for adjusting extension spring
Degree, the radial pressure of adjustment worm screw and spiral master gear is after 0.3~1kgf, adjustment with nut by spring adjusting screw
Fixed on vertical bearing；Eccentric shaft, knob and handle are finally connected, is manually operated, worm screw is departed from and spiral full-height tooth
The engagement of wheel, realize the quick index of circular dividing table；
Step 5, the installation of dust cover and platform
Together with being spoted weld first by dust cover with stiffening ring, it is then fitted on circular dividing table base；Then rotational handle, make
Worm screw disengaging is engaged with spiral master gear；Then by all close pearl axle sleeve ball room spaces, in the oil storage tank of support base, spiral shell
Revolve the lubricating grease that low viscosity is filled in the teeth groove of master gear and in the helicla flute of worm screw；Then by close pearl axle sleeve B and connection spiral shell
The circular table for revolving master gear and bearing block loads on mandrel, is finally gently pressed into close pearl axle sleeve A in mandrel and bearing block
Between, untill the flange on close pearl axle sleeve A is snapped on bearing block.
The beneficial effects of the present invention are, propose it is a kind of using high-precision spiral master gear replace worm gear realize worm screw and
The precision round subsection turntable of spiral standard engaged transmission, driven using opened loop control and high-precision harmonic motor；The worm screw of design
Be less than Self-locking angle with helical gear helical angle, therefore the device has auto-lock function, using extension spring anti-backlash mechanism eliminate worm screw and
Back clearance between spiral master gear, reduce the reverse idle stroke error of circular dividing table；Circular dividing table radial reference uses high precision dense bead
Shafting structure, the leveling effect of error can make the radial composite error of circular dividing table be less than 0.5 μm, and axial benchmark uses laminating cunning
Moving axis bearing structure, there is high rigidity and absorbing to act on.The indexing accuracy of the superior circular dividing table is assembled up to 10 " it is following, meet
General Precision Machining and the indexing demand of test.Precise indexing table provided by the invention can realize interrupted division at any angle or
Continuous division, there is the advantages of simple in construction, indexing accuracy is high, the rigidity of structure is high, indexing accuracy is stable, cost is low, can be used for
The Precision Machining of underloading and test occasion, have good market application foreground.
Brief description of the drawings
Fig. 1 index table sectional views.
Fig. 2 circular tables (on).
Fig. 3 circular tables (under).
Fig. 4 circular dividing tables base (on).
Fig. 5 circular dividing tables base (under).
The installation of Fig. 6 helical gears and circular table.
Fig. 7 support bases.
Fig. 8 anti-backlash mechanisms.
Fig. 9 worm screw shaftings.
Figure 10 device internal structures
Figure 11 general assembly drawings.
In figure：1 circular table；1-1T type grooves；1-2 workpiece connection screw thread holes；1-3 bearing block connection screw thread holes；1-4 oilings
Hole；1-5 bearing block mounting flanges；1-6 master gear datum clamp faces；1-7 master gears install locating surface；1-8 annular grooves；2 is anti-
Dust hood；3 stiffening rings；4 circular dividing table bases；4-1 countersunk head screwed holes；4-2 mandrel positioning holes；4-3 connection screw thread holes；4-4 reinforcements；
4-5 installs locating surface；5 spiral master gears；6 pressure rings；7 protecting covers；8 close pearl axle sleeve A；9 mandrels；10 bearing blocks；11 close pearl axle sleeves
B；12 plastic sheets；13 support bases；13-1 oil storage tanks；13-2 mounting holes；The upper reference planes of 13-3；13-4 support base datum clamp faces；
14 worm screws；15 Triangulum vertical shafts；16 close pearl axle sleeve C；17 worm screw casees；18 small track bases；19 flat close pearl plates；20 handles；21 compensation
Ring；22 ring flanges；23 yielding couplings；24 clutch seats；25 adapter sleeves；26 flange shafts；27 spring adjusting screws；28 vertical bearings；
29 extension springs；30 spring bases；31 eccentric shafts；32 knobs；33 knob bearings；34 harmonic motors.
Embodiment
(1) measure of rotary axis system precision is improved
Influence of the precision of rotary axis system to circular dividing table indexing accuracy is most important.Machining accuracy, dress from vital part
Choice accuracy with spherical rolling body used in precision and close pearl axle sleeve ensures that circular dividing table is no more than the measure of 0.5 μm of radial error
Have：
(1) machining accuracy of mandrel 9 is improved.The precision of positioning including mandrel 9 is with being used as circular dividing table radial reference shaft part
Machining accuracy.The shaft part, the part especially contacted with the spherical rolling body in close pearl axle sleeve A and B, deviation from circular from are less than
0.5 μm, deviation from cylindrical form is less than 1 μm, and the error of perpendicularity of the axis of the shaft part and the positioning reference plane of mandrel 9 is less than 2 μm.Together
The flatness of reference plane, ensures said reference by attrition process above and below Shi Tigao mandrels positioning reference plane, index table base
The flatness in face is no more than 2 μm.
(2) machining accuracy and peace for the endoporus of the spiral master gear 5 and endoporus of bearing block 10 being connected with circular table 1 are improved
Fill axiality.Endoporus and the diameter of bore of bearing block 10 difference of spiral master gear 5 are not more than 2 μm, and deviation from cylindrical form is not more than 1 μ
M, the coaxiality error after assembling are not more than 1 μm.By first assembling, the method for rear integral grinding ensures above-mentioned precision index.
(2) assembling of index table
(1) mandrel 9 is connected by screw on circular dividing table base 4 first.By the datum clamp face and circular dividing table of mandrel 9
The upper reference plane of base 4 cleans up, and a thin layer of lubricating oil is then applied, in addition to antirust function, moreover it is possible to increase faying face
Compatibility；Circular dividing table base 4 is installed on the basis of the shaft part of mandrel 9；The countersunk head screwed hole 4-1 connections of circular dividing table base corner
Suspension ring, the carrying for circular dividing table.
(2) and then by support base 13 it is installed on circular dividing table base 4.It is circular dividing table using the axis of mandrel 4 as radial reference
The upper reference plane of base 4 is that axial benchmark installs village support base 13.Reference plane on support base is carried out at laminating scraping before installation
Reason, laminating material is polytetrafluoroethylplastic plastic piece 12, and thickness selects 0.707mm or 1mm specifications.Measurement support is intended to before and after laminating
Reference plane 13-3 installs positioning reference plane 13-4 parallelism error relative to support seat on seat, has ensured that polytetrafluoroethylplastic plastic
The uniformity of the thickness of piece 12, so that it is guaranteed that the precision and rigidity of the device axial direction reference for installation.
(3) spiral master gear 5 and bearing block 10 are installed on circular division platform 1 again.Spiral master gear is led to first
Pressure ring 6 and mode connects for screw are crossed to circle platform 1, and adjusts axially bored line and the external cylindrical surface axle of circular table 2 in spiral master gear 5
Line overlaps, and then successively loads close pearl axle sleeve B11, bearing block 10 and close pearl axle sleeve A8.Using reference plane 13-3 on support base as axle
To benchmark, using mandrel 9 and close pearl axle sleeve B11 as radial reference rotation circular table 1, progressively by the company of bearing block in rotation process
Connect screw to tighten by diagonal order, thus ensure that the axiality of bearing block 5 and spiral master gear endoporus to greatest extent.
Finally the UNICOM's bearing block 10 of circular table 1, spiral master gear 5 and pressure ring 6 are removed together, together to the bearing block after assembling
The endoporus attrition process of endoporus and spiral master gear.
(4) worm screw and anti-backlash mechanism are installed
Triangulum vertical shaft 15, vertical bearing 28, bearing 33 and small track base 18 are connected by screw circular dividing table bottom first
On seat 4, and the guardrail of the close stroke of pearl plate 19 is put down in connection limitation on small track base, and then flat close pearl plate 19 is put into guardrail.
Then worm screw shafting is loaded in worm screw case 17.Erection sequence is angular contact ball bearing 1, worm screw 14, angular contact ball
Bearing 2, compensation ring 21, ring flange 22, yielding coupling 23, the harmonic motor 34 of flange shaft 26.According to fit-up gap by grinding
Mill regulation compensation ring thickness, with eliminate worm screw 14 relative to worm screw case 17 axial gap.Adapter sleeve 25 by screw with
Worm screw case 18 is connected together, and harmonic motor 34 is connected together by screw with adapter sleeve；Then installed on adapter sleeve 25
Spring base 30 and clutch seat 24 are installed.
Then the worm screw case with after is connected on Triangulum vertical shaft 15 by close pearl axle sleeve C16, adapter sleeve 25 is put into flat
On close pearl plate 16；One end of extension spring 29 is connected on spring base 30, the other end is connected on spring adjusting screw 27, passes through tune
The active length of whole extension spring, adjustment worm screw and the radial pressure of spiral master gear use nut after 0.3~1kgf, adjustment
Spring adjusting screw is fixed on vertical bearing 28.
Eccentric shaft 31, knob 32 and handle 20 are finally connected, is manually operated, worm screw 14 can be made to depart from and spiral standard
The engagement of gear 5, realize the quick index of circular dividing table.
(5) installation of dust cover and platform
Together with being spoted weld first by dust cover 2 with stiffening ring 3, it is then fitted on circular dividing table base 4；Then rotational handle
20, depart from worm screw and engaged with spiral master gear；Then by all close pearl axle sleeve ball room spaces, the oil storage tank of support base
The lubricating grease of low viscosity is filled in interior, spiral master gear teeth groove and in the helicla flute of worm screw；Then by close pearl axle sleeve B11 and
The circular table for connecting spiral master gear 5 and bearing block 10 loads on mandrel 9, and close pearl axle sleeve A8 is gently finally pressed into mandrel
9 and bearing block 10 among, untill the flange on close pearl axle sleeve A8 is snapped on bearing block 10.
(3) operation of index table
(1) running-in
Because circular dividing table worm screw provided by the invention and spiral master gear instantaneous touch state contact for point, and by humorous
Ripple slows down and worm and helical gear double reduction, slows down bigger, and occasion is indexed suitable for low speed rotation.In order to improve worm screw and spiral shell
The contact condition of master gear is revolved, needs to carry out running-in to the device before use.After running-in, worm screw and spiral master gear
Instantaneous Multi-contact state, instantaneous multiple cell domain face contact can be become, so as to improve worm screw and spiral master gear
Contact stiffness.
(2) angular indexing is determined manually
The gearratio optional 120 of the speed reducing ratio of harmonic gear optional 30~50, worm screw and spiral master gear~
180, the synthesis speed reducing ratio of the device is up to 3600~9000；By taking rotating speed 6000rpm motors as an example, the index table turns
Speed is 4 °~10 °/s, therefore index table provided by the invention is low speed turntable, it is impossible to realizes circular dividing table using motor driving
Quick index.The quick index of circular dividing table is realized, by the eccentric rotation axis 21 of handle 20, drives worm screw case 17 to be stood around Triangulum
Axle 15 rotates, and departs from worm screw 14 and is completely disengaged with spiral master gear 5, after hand rotation circular dividing table to special angle,
Handle 20 is moved, worm screw case 17 turns round in the presence of extension spring 29 around Triangulum vertical shaft 15, and worm screw 14 enters and presses spiral mark
In the teeth groove of quasi- gear 5, so as to realize the quick index of circular dividing table.Using the circular dividing table, 1/z (wherein z can be achieved in indexing manually
Determine angular indexing for the number of teeth integral multiple of spiral master gear；It is " following that indexing accuracy is up to 10.
(2) it is continuous automatic or determine angular indexing
Because the indexing means that the invention provides has auto-lock function, therefore it is any that servomotor driving can be utilized to realize
Angle determines angle or continuous division, and indexing accuracy is up to 10 "~30 ".
Claims (3)
1. one kind is based on high-precision spiral master gear and worm geared precision indexing turntable, it is characterised in that including sired results
Make platform (1), dust cover (2), stiffening ring (3), circular dividing table base (4), spiral master gear (5), pressure ring (6), protecting cover (7), close
Pearl axle sleeve A (8), mandrel (9), bearing block (10), close pearl axle sleeve B (11), plastic sheet (12), support base (13), worm screw (14), three
Angled seat vertical shaft (15), close pearl axle sleeve C (16), worm screw case (17), small track base (18), flat close pearl plate (19), handle (20), compensation
Ring (21), ring flange (22), yielding coupling (23), clutch seat (24), adapter sleeve (25), flange shaft (26), spring adjustment spiral shell
Follow closely (27), vertical bearing (28), extension spring (29), spring base (30), eccentric shaft (31), knob (32), knob bearing (33), harmonic wave electricity
Machine (34)；
Plane is circumferentially provided with symmetrical T-slot (1-1) and uniform workpiece connection screw thread hole (1-2) on circular table；Sired results
The flatness for making plane on platform is less than 2 μm, and the end face beat after assembling is not more than 5 μm；The circle of projection is arranged below in circular table
Ring end face, uniform screwed hole on end face, be master gear installation locating surface (1-7)；The flatness of circular table lower surface is missed
Difference is less than 1 μm, is less than 2 μm with the parallelism error in upper table face；Circular table bottom surface has width to be more than the 2 of dust cover wall thickness
~3mm annular groove (1-8), labyrinth seal is formed with dust cover top structure；Oil filler point (1-4) is additionally provided with circular table；
Dust cover bottom is welded and fixed with stiffening ring, and is bolted with circular dividing table base (4)；Dust cover and stiffening ring connect
A breach is stayed to prevent from interfering with worm screw case in the place of connecing；
The upper table facial plane degree error of circular dividing table base is less than 3 μm, and its bottom surface uses closed-in construction, circumferential side frame and centre
Raised annulus is coplanar, and flatness error is less than 5 μm, is less than 5 μm with the parallelism error in upper table face；
The helical angle of spiral master gear (5) is equal to the lead angle of worm screw, transverse module mt=0.5~1mm spiral full-height tooths
The tooth pitch precision of wheel is more than 3 grades precision；Spiral master gear axially position reference plane relative to interior axially bored line end face beat
No more than 2 μm；Spiral master gear is fixed on circular table by pressure ring (6)；Assemble rear screw master gear endoporus and
The coaxiality of inner hole error of bearing block be not more than 1 μm, the relatively former work top in rotational positioning face of spiral master gear it is parallel
Spend error and be not more than 2 μm；
Support base (13) is bowl shaped structure, and upper ring surface is axially mounted locating surface；Lower anchor ring is support base and circular dividing table base
Locating surface is installed, the respective flatness error of two anchor rings is not more than 2 μm, and parallelism error is not more than 2 μm；One is set among upper ring surface
Annular groove, for storing lubricant grease, laminating tablet thereon, it is laminating after support base play a part of sliding bearing；
Mandrel includes a bottom surface and two shaft part compositions；Upper shaft part is the radial reference of index table, and circularity is less than 0.5 μm,
For cylindricity less than 1 μm, the error of perpendicularity of axis and bottom surface is less than 2 μm；The shaft part passes through close pearl axle sleeve A (8) and close pearl axle sleeve B
(11) coordinate respectively with bearing block (10) and spiral master gear；The spherical rolling body of G5 levels above precision selected by close pearl axle sleeve
It it is 0~3 μm with axle and the unilateral magnitude of interference in hole；It is footpath of the mandrel relative to circular dividing table base that lower shaft end cylindricity, which is no more than 3 μm,
To reference for installation, coordinate with circular dividing table base mandrel positioning hole for gap；
Triangle vertical shaft (15) is connected on base, its axis passes through close pearl axle sleeve C (16) connecting worm case (17) one perpendicular to base
End, worm screw case is with respect to triangle vertical shaft rotating；The worm screw case other end is connected with adapter sleeve (25), and close pearl plate (19) is put down in its underrun
Coordinate with the small track base (18) being fixed on base, form a sliding bearing；Adapter sleeve connects close to the side of helical gear
Spring base (30) is connected to, extension spring (29) is provided between vertical bearing (28) and spring base (30)；Spring adjusting screw (27) passes through
Vertical bearing is connected with extension spring；Adapter sleeve opposite side is connected with clutch seat (24), and its endoporus coordinates with eccentric shaft (31) gap；Handle
(20) it is connected by knob (32) with the interference of eccentric shaft upper end；
Worm screw (14) is connected in worm screw case by angular contact ball bearing；The order of connection is by inner and outer be respectively：Angular contact ball axle
Hold A, worm screw, angular contact ball bearing B, compensation ring (21), ring flange (22), yielding coupling (23), flange shaft (26) harmonic
Motor (34).
2. one kind according to claim 1 is based on high-precision spiral master gear and worm geared precision indexing turntable,
Characterized in that, bearing block and mandrel use GCr15 materials, and HRC58 is not less than using quenching subzero treatment, hardness；Spiral
Master gear is using 40Cr materials and using quenching subzero treatment, hardness HRC45~50；Worm screw uses 38CrMoAlA tool steel
Material, surfaces nitrided processing, more than hardness HV830.
3. the assembling based on high-precision spiral master gear and worm geared precision indexing turntable described in claim 1 or 2
Method, it is characterised in that comprise the following steps：
Step 1, mandrel is connected by screw on circular dividing table base；
The upper reference plane of the datum clamp face of mandrel and circular dividing table base is cleaned up, then applies one layer of lubricating oil；With mandrel
Shaft part on the basis of install circular dividing table base；The countersunk head screwed hole connection suspension ring of circular dividing table base corner, for removing for circular dividing table
Fortune；
Step 2, support base is installed on circular dividing table base；
Using the axis of mandrel as radial reference, the upper reference plane for being circular dividing table base is axial benchmark installation village support base；Installation
Preceding to carry out laminating scraping processing to reference plane on support base, laminating material thickness is 0.707~1mm；Laminating front and rear measurement branch
Support the parallelism error that reference plane on seat installs positioning reference plane relative to support seat, it is ensured that the essence of the device axial direction reference for installation
Degree and rigidity；
Step 3, spiral master gear and bearing block are installed on circular division platform；
First by spiral master gear by pressure ring and mode connects for screw to circle platform, and adjust axially bored line in spiral master gear
Overlapped with circular table external cylindrical surface axis, then successively load close pearl axle sleeve B, bearing block and close pearl axle sleeve A；With on support base
Reference plane is axial benchmark, using mandrel and close pearl axle sleeve B as radial reference rotation circular table, progressively by bearing in rotation process
The attachment screw of seat is tightened by diagonal order；Finally circular table UNICOM bearing block, spiral master gear and pressure ring are together taken
Under, together to the endoporus attrition process of the inner hole of bearing seat after assembling and spiral master gear；
Step 4, worm screw and anti-backlash mechanism are installed；
Triangulum vertical shaft, vertical bearing, knob bearing and small track base are connected by screw on circular dividing table base first, and
The guardrail of close pearl plate stroke is put down in connection limitation on small track base, and then flat close pearl plate is put into guardrail；Then by worm screw shafting
Load in worm screw case；Erection sequence is angular contact ball bearing, worm screw, angular contact ball bearing, compensation ring, ring flange, elastic shaft coupling
Device, flange shaft harmonic motor；The thickness of compensation ring is adjusted by grinding according to fit-up gap；Adapter sleeve passes through screw and worm screw
Case is connected together, and harmonic motor is connected together by screw with adapter sleeve；Then on adapter sleeve install spring base and from
Close seat；
Then the worm screw case with after is connected on Triangulum vertical shaft by close pearl axle sleeve C, adapter sleeve is put on flat close pearl plate；Will
One end of extension spring is connected on spring base, and the other end is connected on spring adjusting screw, by adjusting the active length of extension spring, is adjusted
Whole worm screw and the radial pressure of spiral master gear are fixed spring adjusting screw with nut after 0.3~1kgf, adjustment
Onto vertical bearing；Eccentric shaft, knob and handle are finally connected, is manually operated, worm screw is departed from and spiral master gear
Engagement, realize the quick index of circular dividing table；
Step 5, the installation of dust cover and platform；
Together with being spoted weld first by dust cover with stiffening ring, it is then fitted on circular dividing table base；Then rotational handle, worm screw is made
Disengaging is engaged with spiral master gear；Then by all close pearl axle sleeve ball room spaces, in the oil storage tank of support base, spiral mark
The lubricating grease of low viscosity is filled in the teeth groove of quasi- gear and in the helicla flute of worm screw；Then by close pearl axle sleeve B and connection spiral mark
The circular table of quasi- gear and bearing block loads on mandrel, finally close pearl axle sleeve A is pressed among mandrel and bearing block, Zhi Daomi
Untill flange on pearl axle sleeve A is snapped on bearing block.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710833502.6A CN107649890B (en) | 2017-09-15 | 2017-09-15 | One kind is based on high-precision spiral master gear and worm geared precision indexing turntable and assembly method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710833502.6A CN107649890B (en) | 2017-09-15 | 2017-09-15 | One kind is based on high-precision spiral master gear and worm geared precision indexing turntable and assembly method |
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| CN107649890B CN107649890B (en) | 2019-05-10 |
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| CN109753963A (en) * | 2019-02-22 | 2019-05-14 | 山东大学 | A kind of tire identification automatic recognition system and its working method based on line-structured light |
| CN110513439A (en) * | 2019-06-28 | 2019-11-29 | 中冶华天工程技术有限公司 | High precision overloading gear-box |
| CN111097977A (en) * | 2019-12-27 | 2020-05-05 | 湖南工业大学 | Theoretical error-free indexing method and gear dividing mechanism for gear machining |
| CN112059659A (en) * | 2020-08-18 | 2020-12-11 | 青岛磐德凯锐设备制造有限公司 | Rotary workbench |
| CN113029557A (en) * | 2021-03-03 | 2021-06-25 | 浙江捷众科技股份有限公司 | Intelligent portable detector for strength of transmission gear teeth |
| CN114536099A (en) * | 2022-01-30 | 2022-05-27 | 山东联峰精密科技有限公司 | High-precision air suspension interval indexing disc |
| CN115533420A (en) * | 2022-10-18 | 2022-12-30 | 深圳市山河动力电子有限公司 | Lithium battery welding equipment |
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| CN113029557B (en) * | 2021-03-03 | 2021-10-01 | 浙江捷众科技股份有限公司 | Intelligent portable detector for strength of transmission gear teeth |
| CN114536099A (en) * | 2022-01-30 | 2022-05-27 | 山东联峰精密科技有限公司 | High-precision air suspension interval indexing disc |
| CN115533420A (en) * | 2022-10-18 | 2022-12-30 | 深圳市山河动力电子有限公司 | Lithium battery welding equipment |
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Effective date of registration: 20210225 Address after: 116000 2101-0006, 21 / F, Taide building, 537 Huangpu Road, Ganjingzi District, Dalian City, Liaoning Province Patentee after: Golden teeth transmission technology (Dalian) Co.,Ltd. Address before: 116024 No. 2 Ling Road, Ganjingzi District, Liaoning, Dalian Patentee before: DALIAN University OF TECHNOLOGY |