CN107649890B - 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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- CN107649890B CN107649890B CN201710833502.6A CN201710833502A CN107649890B CN 107649890 B CN107649890 B CN 107649890B CN 201710833502 A CN201710833502 A CN 201710833502A CN 107649890 B CN107649890 B CN 107649890B
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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
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- 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
Abstract
The invention belongs to Precision Machinings and the field of test technology, one kind is proposed based on high-precision spiral master gear and worm geared precision indexing turntable and assembly method, using opened loop control and the driving of high-precision harmonic motor and the worm screw with self-locking function and helical gear helical angle engaged transmission；Back clearance between worm screw and spiral master gear is eliminated using tension spring anti-backlash mechanism, reduces the reversed 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 less than 0.5 μm；Axial benchmark uses laminating sliding bearing structure, has high rigidity and absorbing effect.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 that structure is simple, indexing accuracy is high, the rigidity of structure is high, indexing accuracy is stable, at low cost, the Precision Machining and test occasion that can be used for being lightly loaded.
Description
Technical field
The invention belongs to Precision Machinings and the field of test technology, are related to a kind of processing and test for precision indexing element
Index table.
Background technique
Index table is machining and a very important device in testing field, and 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 generally can reach 0.5 ", can reach 0.1 "；Followed by index disc type indexing means, highest indexing essence
It spends up to 5 "~10 ", general indexing accuracy is 10 "~30 ".However these two types of indexing components mostly use opened loop control, indexing essence
Degree depends entirely on the indexing accuracy of indexing component itself, and can not achieve 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 at
This is higher, and the precision of mechanical dividing device is not high yet for indexing stability.
The control form of high-precision dividing apparatus has open loop and closed-loop and semiclosed loop three types, steady from cost and indexing
It is said in qualitative angle, cost is relatively low for opened loop control, and indexing stability is preferable；Closed-loop control higher cost indexes stability one
As；Half-closed loop control falls between.
Vibration and noise is small, excellent with self-locking function etc. in big, transmission process with single staged transmission ratio for Worm Wheel System
Point, be widely applied with machine-building equipment in indexing system in.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 lower, and indexing accuracy is generally 1 '~3 '；In closed-loop control
In system, the indexing accuracy of Worm Wheel System depends primarily on the machining accuracy and 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.
Since the manufacturing cost of worm gear is higher, and the highest accuracy of manufacture is 3 grades.Therefore, of less demanding in indexing accuracy
Occasion under commonly use helical gear to 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 being all made of low cost are driven.Since 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.
Summary of the invention
To solve the problems, such as that existing indexing means cost performance is not high, the present invention provides one kind to be based on high-precision spiral standard
Gear and worm geared precision indexing turntable,
The specific technical proposal is: a kind of be based on high-precision spiral master gear and worm geared precision indexing turntable, packet
Include circular table, dust cover, stiffening ring, circular dividing table pedestal, spiral master gear, pressure ring, protecting cover, close pearl axle sleeve A, mandrel, axis
Hold seat, 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, Ping Mizhu
Plate, compensation ring, ring flange, yielding coupling, clutch seat, connector sleeve, flange shaft, spring adjusting screw, vertical support, is drawn handle
Spring, spring base, eccentric shaft, knob, knob support, harmonic motor；
Plane is circumferentially equipped with symmetrical T-slot and uniformly distributed workpiece connection screw thread hole on circular table, for workpiece or
The connection of fixture；For the flatness of plane less than 2 μm, the end face beat after assembly is not more than 5 μm on circular table；Under circular table
Face is equipped with the annulus end face of protrusion, and uniformly distributed threaded hole on end face is the installation positioning surface of master gear, is used for spiral master gear
Fixation；The flatness error of circular table lower end surface is less than 1 μm, and the parallelism error with plane on circular table is less than 2 μm；
Circular table bottom surface has width greater than the annular groove of 2~3mm of dust cover wall thickness, forms labyrinth seal with dust cover top structure；
Oil filler point is additionally provided on circular table, convenient for the lubricating oil of filling lubrication worm screw and spiral master gear；
Dust cover selects the steel plate of 1~2mm to roll, and lower part is welded and fixed with stiffening ring, and logical with circular dividing table pedestal
It crosses and is bolted；Dust cover and stiffening ring junction stay a notch to prevent from interfering with worm screw case；
Big angle is fallen in the generally square plate of circular dividing table pedestal, quadrangle, is cast and is processed using cast iron materials；Upper table
Facial plane degree error is machined with less than 3 μm for connecting mandrel, support base, Triangulum vertical shaft, vertical support, knob support, dust-proof
The threaded hole of the parts such as cover stiffening ring；Its bottom surface uses frame structure, and the annulus of circumferential side frame and intermediate projections is coplanar, flatness
Error is less than 5 μm, and the parallelism error with upper table face is less than 5 μm；Uniformly distributed four are equipped among bottom surface frame and annulus
Reinforcing rib, for improving the rigidity of structure of circular dividing table pedestal；
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 guaranteeing 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
It closes, the tooth pitch precision of spiral master gear is 3 grades or more precision (GB/T10095.1-2008)；Spiral master gear axially position
Datum level 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；
The coaxiality of inner hole error of the inner hole and bearing block that assemble rear screw master gear is not more than 1 μm, the rotation of spiral master gear
Positioning surface is not more than 2 μm with respect to the parallelism error of plane on circular table；
Support base is bowl shaped structure, and upper ring surface is the axially mounted positioning surface of support base and spiral master gear, and bears
Circular table, bearing block, close pearl axle sleeve A, spiral standard and it is to be processed or test tool part weight；Lower anchor ring is support
The installation positioning surface of seat and circular dividing table pedestal, the respective flatness error of two anchor rings are not more than 2 μm, and parallelism error is not more than 2 μ
m；An annular groove is set among upper ring surface, for storing lubricant grease, laminating tablet, and process scraping processing thereon；Branch after laminating
Support seat plays the role of sliding bearing；
Mandrel includes a bottom surface and two shaft part compositions；Upper shaft part is the radial reference of circular table, and circularity is less than 0.5
μm, cylindricity is less than 1 μm, and 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
Cooperate respectively with bearing block and spiral master gear；The spherical rolling body of G5 grades or more precision selected by close pearl axle sleeve and axis and hole
Unilateral magnitude of interference be 0~3 μm；It is radially installed base of the mandrel relative to circular dividing table pedestal that lower shaft part cylindricity, which is no more than 3 μm,
Standard is clearance fit with circular dividing table pedestal mandrel location hole；
Triangulum vertical shaft is connected on pedestal, axis passes through close pearl axle sleeve C connecting worm case one end, snail perpendicular to pedestal
Rod box is with respect to Triangulum vertical shaft rotating；The worm screw case other end is connect with connector sleeve, and underrun puts down close pearl plate and is fixed on bottom
Small track base cooperation on seat, forms a sliding bearing；Connector sleeve is connected with spring base close to the side of helical gear, vertical
Tension spring is equipped between support and spring base, for worm screw case to be pulled to spiral master gear, to eliminate the worm screw in worm screw case
Radial clearance between helical gear；Spring adjusting screw passes through vertical support and connect with tension spring, passes through adjustment spring adjusting screw
Pressure between adjustable worm screw and spiral master gear；The connector sleeve other side is connected with clutch seat, inner hole and eccentric between centers
Gap cooperation；Handle is connect by knob with the interference of eccentric shaft upper end, facilitates the manual actuation of eccentric shaft, to realize worm screw and spiral
The quick separating of gear；
Worm screw is connected in worm screw case by angular contact ball bearing；The order of connection is respectively as follows: angular contact ball axis from inside and outside
Hold D, worm screw, angular contact ball bearing E, compensation ring, ring flange, yielding coupling, flange shaft and harmonic motor.
Further, above-mentioned bearing block and mandrel use GCr15 material, and using quenching subzero treatment, hardness is not less than
HRC58；Spiral master gear is using 40Cr material and using quenching subzero treatment, hardness HRC45~50；Worm screw uses
38CrMoAlA tool steel material, surfaces nitrided processing, hardness HV830 or more.
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 pedestal；
The upper datum level of the datum clamp face of mandrel and circular dividing table pedestal is cleaned up, one layer of lubricating oil is then applied；With
Circular dividing table pedestal is installed on the basis of the shaft part of mandrel；The countersunk head threaded hole of circular dividing table pedestal quadrangle connects hanging ring, is used for circular dividing table
Carrying；
Step 2, support base is installed on circular dividing table pedestal；
It is that axial benchmark installs support base with the upper datum level of circular dividing table pedestal using the axis of mandrel as radial reference；Peace
Laminating scraping processing is carried out to support base upper ring surface before dress, laminating material thickness is 0.707~1mm；Laminating front and back measures branch
Parallelism error of the seat upper ring surface relative to anchor ring under support base is supportted, has ensured that the uniformity of polytetrafluoroethylplastic plastic piece 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 table；
Spiral master gear is connected on circular table by pressure ring and screw first, and is adjusted in spiral master gear
Axially bored line is overlapped with circular table external cylindrical surface axis, is then successively packed into close pearl axle sleeve B, bearing block and close pearl axle sleeve A；With branch
Supportting datum level on seat is axial benchmark, using mandrel and close pearl axle sleeve B as radial reference rotation circular table, in rotation process gradually
The attachment screw of bearing block is tightened by diagonal sequence, thus ensure that the maximum extent in bearing block and spiral master gear
The concentricity in hole；Finally circular table is removed together together with bearing block, spiral master gear and pressure ring, together to assembly after
The inner hole attrition process of inner hole of bearing seat and spiral master gear；
Step 4, worm screw and anti-backlash mechanism are installed；
Triangulum vertical shaft, vertical support, knob support and small track base are connected by screw on circular dividing table pedestal first,
And the guardrail of close pearl plate stroke is put down in connection limitation on small track base, will then be put down close pearl plate and is put into guardrail；Then by worm screw
Shafting is packed into 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 and harmonic motor；According to fit-up gap by grinding adjust compensation ring thickness, with eliminate worm screw relative to
Worm screw case axial gap；Connector sleeve is connected together by screw with worm screw case, and harmonic motor passes through screw and connector sleeve
It connects together；Spring base and clutch seat are then installed on connector sleeve；
Then the worm screw case after matching is connected on Triangulum vertical shaft by close pearl axle sleeve C, and connector sleeve, which is put into, puts down close pearl plate
On；One end of tension spring is connected on spring base, the other end is connected on spring adjusting screw, long by adjusting the work of tension spring
The radial pressure of degree, adjustment worm screw and spiral master gear is after 0.3~1kgf, adjustment with nut by spring adjusting screw
Fixed on vertical support；Eccentric shaft, knob and handle are finally connected, by manual operation, is detached from worm screw and spiral full-height tooth
The quick index of circular dividing table is realized in the engagement of wheel；
Step 5, the installation of dust cover and platform
Dust cover and stiffening ring are spoted weld together first, are then fitted on circular dividing table pedestal；Then rotational handle makes
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 tooth socket 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 is packed on mandrel, is finally gently pressed into close pearl axle sleeve A in mandrel and bearing block
Between, until the flange on close pearl axle sleeve A snaps 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 with
The precision round subsection turntable of spiral master gear engaged transmission, is driven using opened loop control and high-precision harmonic motor；Design
Worm screw and helical gear helical angle are less than Self-locking angle, therefore the device has self-locking function, eliminate snail using tension spring anti-backlash mechanism
Back clearance between bar and spiral master gear reduces the reversed idle stroke error of circular dividing table；Circular dividing table radial reference is using high-precision
Dense ball bearing shafting structure, the leveling effect of error can make the radial composite error of circular dividing table less than 0.5 μm, and axial benchmark is using laminating
Sliding bearing structure, have high rigidity and absorbing effect.The indexing accuracy of the superior circular dividing table is assembled up to 10 " hereinafter,
Meet the indexing demand of general Precision Machining and test.Precise indexing table provided by the invention can realize interval point at any angle
Degree or continuous division, have the advantages that structure is simple, indexing accuracy is high, the rigidity of structure is high, indexing accuracy is stable, at low cost, can
For the Precision Machining and test occasion of underloading, there is good market application prospect.
Detailed description of the invention
Fig. 1 index table cross-sectional view.
Fig. 2 circular table (on).
Fig. 3 circular table (under).
Fig. 4 circular dividing table pedestal (on).
Fig. 5 circular dividing table pedestal (under).
The installation of Fig. 6 helical gear and circular table.
Fig. 7 support base.
Fig. 8 anti-backlash mechanism.
Fig. 9 worm screw shafting.
Figure 10 device internal structure
Figure 11 general assembly drawing.
In figure: 1 circular table；1-1T type groove；1-2 workpiece connection screw thread hole；1-3 bearing block connection screw thread hole；1-4 oiling
Hole；1-5 bearing block mounting flange；1-6 master gear datum clamp face；1-8 annular groove；2 dust covers；3 stiffening rings；4 circular dividing table bottoms
Seat；4-1 countersunk head threaded hole；4-2 mandrel location hole；4-3 connection screw thread hole；4-4 reinforcing rib；4-5 installs positioning surface；5 spiral marks
Quasi- gear；6 pressure rings；7 protecting covers；8 close pearl axle sleeve A；9 mandrels；10 bearing blocks；11 close pearl axle sleeve B；12 plastic sheets；13 support bases；
13-1 oil storage tank；13-2 mounting hole；13-3 upper ring surface；Anchor ring under 13-4；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 rings；22 ring flanges；23 yielding couplings；24 clutches
Seat；25 connector sleeves；26 flange shafts；27 spring adjusting screws；28 vertical supports；29 tension springs；30 spring bases；31 eccentric shafts；32 knobs；
33 knob supports；34 harmonic motors.
Specific 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 key part
Choice accuracy with spherical rolling body used in precision and close pearl axle sleeve come guarantee circular dividing table be no more than 0.5 μm of radial error measure
Have:
(1) machining accuracy of mandrel 9 is improved.The precision of positioning including mandrel 9 with 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, cylindricity error is less than 1 μm, and the error of perpendicularity of the positioning reference plane of the axis and mandrel 9 of the shaft part is less than 2 μm.Together
The flatness of datum level, ensures said reference by attrition process above and below Shi Tigao mandrel positioning reference plane, index table pedestal
The flatness in face is no more than 2 μm.
(2) machining accuracy and peace of 5 inner hole of spiral master gear and 10 inner hole of bearing block that connect with circular table 1 are improved
Fill concentricity.The inner hole and 10 diameter of bore difference of bearing block of spiral master gear 5 are not more than 2 μm, and cylindricity error is not more than 1 μ
M, the coaxiality error after assembly are not more than 1 μm.By first assembling, the method for rear integral grinding ensures above-mentioned precision index.
(2) assembly of index table
(1) mandrel 9 is connected by screw on circular dividing table pedestal 4 first.By the datum clamp face and circular dividing table of mandrel 9
The upper datum level of pedestal 4 cleans up, and a thin layer of lubricating oil is then applied, other than antirust function, moreover it is possible to increase faying face
Compatibility；Circular dividing table pedestal 4 is installed on the basis of the shaft part of mandrel 9；The countersunk head threaded hole 4-1 connection of circular dividing table pedestal quadrangle
Hanging ring, the carrying for circular dividing table.
(2) then support base 13 is installed on circular dividing table pedestal 4.Using the axis of mandrel 9 as radial reference, with circular dividing table
The upper datum level of pedestal 4 is that axial benchmark installs support base 13.Laminating scraping processing is carried out to datum level on support base before installation,
Laminating material is polytetrafluoroethylplastic plastic piece 12, and thickness selects 0.707mm or 1mm specification.Laminating front and back is intended to measurement support base
Parallelism error of the upper datum level 13-3 relative to datum level 13-4 under support base, has ensured that 12 thickness of polytetrafluoroethylplastic plastic piece
Uniformity, 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 table 1 again.Spiral master gear is led to first
It crosses pressure ring 6 and screw is connected on circular table 1, and adjust axially bored line and 2 external cylindrical surface of circular table in spiral master gear 5
Axis is overlapped, and is then successively packed into close pearl axle sleeve B11, bearing block 10 and close pearl axle sleeve A8.It is with datum level 13-3 on support base
Axial benchmark, using mandrel 9 and close pearl axle sleeve B11 as radial reference rotation circular table 1, gradually by bearing block in rotation process
Attachment screw is tightened by diagonal sequence, thus ensure that the coaxial of bearing block 5 and spiral master gear inner hole to the maximum extent
Degree.Finally circular table 1 is removed together together with bearing block 10, spiral master gear 5 and pressure ring 6, together to the axis after assembly
Hold the inner hole attrition process of an inner hole and spiral master gear.
(4) worm screw and anti-backlash mechanism are installed
Triangulum vertical shaft 15, vertical support 28, support 33 and small track base 18 are connected by screw to circular dividing table bottom first
On seat 4, and the guardrail of close 19 stroke of pearl plate is put down in connection limitation on small track base, will then be put down close pearl plate 19 and is put into guardrail.
Then worm screw shafting is packed into worm screw case 17.Erection sequence is angular contact ball bearing D, worm screw 14, angular contact ball
Bearing E, compensation ring 21, ring flange 22, yielding coupling 23, flange shaft 26 and harmonic motor 34.According to fit-up gap by grinding
Mill adjust compensation ring thickness, with eliminate worm screw 14 relative to worm screw case 17 axial gap.Connector sleeve 25 by screw with
Worm screw case 18 connects together, and harmonic motor 34 is connected together by screw with connector sleeve；Then it is installed on connector sleeve 25
Spring base 30 and clutch seat 24 are installed.
Then the worm screw case after matching is connected on Triangulum vertical shaft 15 by close pearl axle sleeve C16, and connector sleeve 25 is put into flat
On close pearl plate 16；One end of tension spring 29 is connected on spring base 30, the other end is connected on spring adjusting screw 27, passes through tune
The radial pressure of the active length of whole tension spring, adjustment worm screw and spiral master gear uses nut after 0.3~1kgf, adjustment
Spring adjusting screw is fixed on vertical support 28.
Eccentric shaft 31, knob 32 and handle 20 are finally connected, by manual operation, worm screw 14 can be made to be detached from and spiral standard
The quick index of circular dividing table is realized in the engagement of gear 5.
(5) installation of dust cover and platform
Dust cover 2 and stiffening ring 3 are spoted weld together first, are then fitted on circular dividing table pedestal 4；Then rotational handle
20, it is detached from worm screw and is 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 tooth socket 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 is packed on mandrel 9, and close pearl axle sleeve A8 is gently finally pressed into mandrel
9 and bearing block 10 among, until the flange on close pearl axle sleeve A8 snaps on bearing block 10.
(3) operation of index table
(1) running-in
Since circular dividing table worm screw provided by the invention and spiral master gear instantaneous touch state are point contact, and by humorous
Wave slows down and worm and helical gear double reduction, slows down bigger, is suitable for low speed rotation and indexes occasion.In order to improve worm screw and spiral shell
The contact condition for revolving master gear needs to carry out running-in to the device before use.After running-in, worm screw and spiral master gear
Instantaneous Multi-contact state, will become instantaneous multiple cell domain face contact, to improve worm screw and spiral master gear
Contact stiffness.
(2) angular indexing is determined manually
The transmission ratio of the reduction ratio of harmonic gear optional 30~50, worm screw and spiral master gear optional 120~
180, the synthesis reduction ratio of the device is up to 3600~9000；By taking revolving speed 6000rpm driving motor as an example, which turns
Speed is 4 °~10 °/s, therefore index table provided by the invention is low speed turntable, cannot realize circular dividing table using motor driven
Quick index.The quick index for realizing circular dividing table drives worm screw case 17 vertical around Triangulum by 20 eccentric rotation axis 21 of handle
Axis 15 rotates, and is detached from worm screw 14 and completely disengages with spiral master gear 5, after hand rotation circular dividing table to special angle,
Handle 20 is moved, worm screw case 17 turns round under the action of tension spring 29 around Triangulum vertical shaft 15, and worm screw 14 enters and presses spiral mark
In the tooth socket of quasi- gear 5, to realize the quick index of circular dividing table.Being indexed manually using the circular dividing table can be achieved 1/z (wherein z
Angular indexing is determined for the number of teeth integral multiple of spiral master gear；It is " following that indexing accuracy is up to 10.
(2) continuous automatic or determine angular indexing
Since the indexing means that the invention provides has self-locking function, it can use servo motor driving and realize arbitrarily
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, which is characterized in that including sired results
Make platform (1), dust cover (2), stiffening ring (3), circular dividing table pedestal (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), Ping Mizhu plate (19), handle (20), compensation
Ring (21), ring flange (22), yielding coupling (23), clutch seat (24), connector sleeve (25), flange shaft (26), spring adjust spiral shell
Follow closely (27), vertical support (28), tension spring (29), spring base (30), eccentric shaft (31), knob (32), knob support (33), harmonic wave electricity
Machine (34)；
Plane is circumferentially equipped with symmetrical T-slot (1-1) and uniformly distributed workpiece connection screw thread hole (1-2) on circular table；Sired results
Make the flatness of plane on platform less than 2 μm, the end face beat after assembly is not more than 5 μm；The circle of protrusion is arranged below in circular table
Ring end face, uniformly distributed threaded hole on end face, is the installation positioning surface (1-7) of master gear；The flatness of circular table lower end surface is missed
Difference is less than 1 μm, and the parallelism error with plane on circular table is less than 2 μm；Circular table bottom surface has width to be greater than dust-proof cover wall
The annular groove (1-8) of 2 thick~3mm forms labyrinth seal with dust cover top structure；Oil filler point (1- is additionally provided on circular table
4)；
Dust cover lower part is welded and fixed with stiffening ring, and is bolted with circular dividing table pedestal (4)；Dust cover and stiffening ring connect
A notch is stayed to prevent from interfering with worm screw case in the place of connecing；
For the upper table facial plane degree error of circular dividing table pedestal less than 3 μm, bottom surface uses frame structure, circumferential side frame and centre
The annulus of protrusion is coplanar, and flatness error is less than 5 μm, and the parallelism error with upper table face is less than 5 μm；
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 tooth
The tooth pitch precision of wheel is 3 grades or more precision；End face beat of the spiral master gear axially position datum level relative to interior axially bored line
No more than 2 μm；Spiral master gear is fixed on circular table by pressure ring (6)；Assemble rear screw master gear inner hole and
The coaxiality of inner hole error of bearing block is not more than 1 μm, and the rotational positioning face of spiral master gear is with respect to plane on circular table
Parallelism error is not more than 2 μm；
Support base (13) is bowl shaped structure, and upper ring surface is the axially mounted positioning surface of support base and spiral master gear；Lower anchor ring
Respective flatness error for the installation positioning surface of support base and circular dividing table pedestal, two anchor rings is not more than 2 μm, and parallelism error is not
Greater than 2 μm；An annular groove is set among upper ring surface, for storing lubricant grease, laminating tablet thereon, it is laminating after support base play cunning
The effect of dynamic bearing；
Mandrel includes a bottom surface and two shaft part compositions；Upper shaft part be circular table radial reference, circularity less than 0.5 μm,
Cylindricity is less than 1 μm, and 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) He Mizhu axle sleeve B
(11) cooperate respectively with bearing block (10) and spiral master gear；The spherical rolling body of G5 grades or more precision selected by close pearl axle sleeve
It is 0~3 μm with axis and the unilateral magnitude of interference in hole；It is diameter of the mandrel relative to circular dividing table pedestal that lower shaft part cylindricity, which is no more than 3 μm,
It is clearance fit with circular dividing table pedestal mandrel location hole to reference for installation；
Triangulum vertical shaft (15) are connected on pedestal, axis passes through close pearl axle sleeve C (16) connecting worm case (17) perpendicular to pedestal
One end, worm screw case is with respect to Triangulum vertical shaft rotating；The worm screw case other end is connect with connector sleeve (25), and close pearl plate is put down in underrun
(19) cooperate with the small track base (18) being fixed on pedestal, form a sliding bearing；Connector sleeve close to helical gear one
Side is connected with spring base (30), is equipped with tension spring (29) between vertical support (28) and spring base (30)；Spring adjusting screw (27)
It is connect across vertical support with tension spring；The connector sleeve other side is connected with clutch seat (24), inner hole and eccentric shaft (31) clearance fit；
Handle (20) is connect 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 respectively as follows: angular contact ball axis from inside and outside
Hold D, worm screw, angular contact ball bearing E, compensation ring (21), ring flange (22), yielding coupling (23), flange shaft (26) and harmonic wave
Motor (34).
2. one kind according to claim 1 is based on high-precision spiral master gear and worm geared precision indexing turntable,
It is characterized in that, bearing block and mandrel use GCr15 material, and using quenching subzero treatment, hardness is not less than HRC58；Spiral
Master gear is using 40Cr material and using quenching subzero treatment, hardness HRC45~50；Worm screw uses 38CrMoAlA tool steel
Material, surfaces nitrided processing, hardness HV830 or more.
3. according to claim 1 or 2 based on high-precision spiral master gear and worm geared precision indexing turntable
Assembly method, which comprises the steps of:
Step 1, mandrel is connected by screw on circular dividing table pedestal；
The upper datum level of the datum clamp face of mandrel and circular dividing table pedestal is cleaned up, one layer of lubricating oil is then applied；With mandrel
Shaft part on the basis of install circular dividing table pedestal；The countersunk head threaded hole of circular dividing table pedestal quadrangle connects hanging ring, for removing for circular dividing table
Fortune；
Step 2, support base is installed on circular dividing table pedestal；
It is that axial benchmark installs support base with the upper datum level of circular dividing table pedestal using the axis of mandrel as radial reference；Before installation
Laminating scraping processing is carried out to support base upper ring surface, laminating material thickness is 0.707~1mm；Laminating front and back measures support base
Parallelism error of the upper ring surface relative to anchor ring under support base, it is ensured 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 table；
Spiral master gear is connected on circular table by pressure ring and screw first, and adjusts hole axle in spiral master gear
Line is overlapped with circular table external cylindrical surface axis, is then successively packed into close pearl axle sleeve B, bearing block and close pearl axle sleeve A；With support base
Upper datum level is axial benchmark, using mandrel and close pearl axle sleeve B as radial reference rotation circular table, gradually by axis in rotation process
The attachment screw for holding seat is tightened by diagonal sequence；Finally by circular table together with bearing block, spiral master gear and pressure ring together
It removes, together to the inner hole attrition process of inner hole of bearing seat and spiral master gear after assembly；
Step 4, worm screw and anti-backlash mechanism are installed；
Triangulum vertical shaft, vertical support, knob support and small track base are connected by screw on circular dividing table pedestal first, and
The guardrail of close pearl plate stroke is put down in connection limitation on small track base, will then be put down close pearl plate and is put into guardrail；Then by worm screw shafting
It is packed into 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 and harmonic motor；The thickness of compensation ring is adjusted by grinding according to fit-up gap；Connector sleeve passes through screw and worm screw
Case connects together, and harmonic motor is connected together by screw with connector sleeve；Then on connector sleeve install spring base and from
Close seat；
Then the worm screw case after matching is connected on Triangulum vertical shaft by close pearl axle sleeve C, and connector sleeve, which is put into, puts down on close pearl plate；It will
One end of tension spring is connected on spring base, and the other end is connected on spring adjusting screw, by adjusting the active length of tension spring, is adjusted
The radial pressure of whole worm screw and spiral master gear is fixed spring adjusting screw with nut after 0.3~1kgf, adjustment
Onto vertical support；Eccentric shaft, knob and handle are finally connected, by manual operation, is detached from worm screw and spiral master gear
Engagement, realizes the quick index of circular dividing table；
Step 5, the installation of dust cover and platform；
Dust cover and stiffening ring are spoted weld together first, are then fitted on circular dividing table pedestal；Then rotational handle makes 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 mark
The lubricating grease of low viscosity is filled in the tooth socket 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 is packed on mandrel, finally close pearl axle sleeve A is pressed among mandrel and bearing block, Zhi Daomi
Until flange on pearl axle sleeve A snaps on bearing block.
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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 |
| CN111097977B (en) * | 2019-12-27 | 2021-07-13 | 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 |
| 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 |
| CN114536099B (en) * | 2022-01-30 | 2023-06-27 | 山东联峰精密科技有限公司 | High-precision air suspension interval dividing disc |
| CN115533420B (en) * | 2022-10-18 | 2023-05-30 | 深圳市山河动力电子有限公司 | Lithium battery welding equipment |
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| NL109370C (en) * | 1957-11-13 | |||
| JPS59175906A (en) * | 1983-03-25 | 1984-10-05 | Yoshikazu Sato | Numerical control lathe |
| DE3722871A1 (en) * | 1986-07-12 | 1988-03-24 | Mauritius Jauch | Rotary indexing table |
| CN1116149C (en) * | 2001-02-12 | 2003-07-30 | 高明渝 | Numerically controlled worktable with cam transmitting positioner and encoding turret |
| CN2707430Y (en) * | 2004-06-25 | 2005-07-06 | 重庆机床厂 | auxiliary rotating table with double indexes for machine tool |
| CN2707427Y (en) * | 2004-06-25 | 2005-07-06 | 重庆机床厂 | Rotating table for numerical control machine |
| CN2889601Y (en) * | 2005-12-28 | 2007-04-18 | 天津市双龙自动化技术有限公司 | Automatic graduation mechanical clamping fittings |
| CN2897537Y (en) * | 2006-04-05 | 2007-05-09 | 吴政男 | Digital-controlled scaling unit with assembled worm |
| CN201012860Y (en) * | 2007-01-25 | 2008-01-30 | 上海力保科技有限公司 | Scale division rotating pedestal |
| CN201871949U (en) * | 2010-11-23 | 2011-06-22 | 营口重型机床集团有限公司 | Numerically-controlled rotary worktable |
| CN102059558B (en) * | 2010-11-24 | 2013-02-13 | 南京工大数控科技有限公司 | Large and heavy numerical control static-pressure revolving platform |
| CN203875688U (en) * | 2014-05-19 | 2014-10-15 | 九江精达检测技术有限公司 | Inversion device for automatic control of multi-tooth division table |
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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 |