CN104517519B - Novel involute gear shaping meter - Google Patents
Novel involute gear shaping meter Download PDFInfo
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- CN104517519B CN104517519B CN201510023134.XA CN201510023134A CN104517519B CN 104517519 B CN104517519 B CN 104517519B CN 201510023134 A CN201510023134 A CN 201510023134A CN 104517519 B CN104517519 B CN 104517519B
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- gear
- base disk
- shaping meter
- gears
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
Abstract
The present invention relates to a kind of novel involute gear shaping meter, this shaping meter includes mounting seat, all parts are installed on base disk, at this center, base disk back side, central gear is installed, three gears engaged with this central gear are uniform along central gear circumference, it is installed on base disk front with these three gear coaxial mounted the other three gears, circle paper pallet is coaxially mounted to base front surface with central gear, small gap is left between three gears that circle paper pallet and front are installed, the DC micromotor that central gear is arranged on the base disk back side by support drives, powered by dry cell batteries, intermittent-rotation angle is controlled by programmable single chip computer module, for convenience of operation, switch and start button it is also equipped with on base.This shaping meter can depict standard and the tooth curve of positive and negative profile modified gear, its simple in construction by the envelope of three master gear cutter tooth-profile that base disk front is installed, and material of main part can be selected for acrylic board and makes, low cost.
Description
Technical field:
The present invention relates to a kind of novel involute gear shaping meter, belong to education and instruction instrument or experiment appliance field.
Background technology:
Generation method is one of modal method of Gear Processing, and such as gear hobbing and Gear Shaping gear, its principle is to utilize flank profil to engage
Philosophy carrys out cutting flank profil, one of gear (or wheel and rack) that a pair is meshed by imagination as cutter, and another
Individual as wheel blank, and make both still by former ratio transmissions, cutter also axially makees cutting movement along wheel blank and cutter relieving moves simultaneously,
Then just can process on wheel blank and the flank profil of cutter tooth-profile conjugation.If the profile of cutter blade is involute, then according to conjugation
Principle, the gear teeth that its cutting envelope goes out also must be involute.The flank profil great majority of common involute gear use generation method exactly
Process, but in the actual course of processing, can't see blade envelope go out the process of flank profil, be not easy to it is appreciated that during Gear Processing
Parameter Variation after the reason that involute gear generation root is cut, the method avoiding root to cut with displacement correction and gear modification.
To this end, domestic each big, mechanical each specialty of special secondary school universities and colleges is when learning correlated curriculum, all offer involute gear meshed experiment,
This experiment is checking and an important channel of simulation Gear Processing principle.
The gear model for demonstration purpose that gears generating experiment uses at present is made up of parts such as pallet, base, rack cutter, balladeur trains.Experiment
Time, the tooth base (circle paper) of gear to be processed is all arranged on shaping meter with rack cutter model, tightening nut pressing plate compresses
Circle paper, more just rack cutter center line is adjusted to center to zero, and make its center line tangent with wheel blank reference circle, and by rack cutter and cunning
Plate fastens, and finally rack cutter is pushed into extreme position, successively single-way moving rack cutter describe sword exterior feature respectively with pencil successively
Instantaneous position, draws the complete profile of tooth of two or more.When drawing profile modified gear flank profil, need first to unclamp clamp nut, rotate wheel blank
Circle paper, by normal shift fan section just to rack position, and compresses round paper, is then adjusted to by rack cutter two ends scale center line respectively
Away from or near tooth base reference circle certain distance, and rack cutter is fastened with slide plate, draws out positive and negative profile modified gear profile respectively.
Existing shaping meter has a following drawback: 1) producer must provide round paper for a long time together, which greatly limits school and carries out smoothly
Gears generating experiment；2) student needs when testing repeatedly to adjust round paper position, complex operation；3) fine setting transverse guides fortune
The uniform mobile of guide plate it is difficulty with time dynamic；Gear modification moves up and down realization by tooth plate, easily causes whole tooth bar inclined
Tiltedly, the involute profile precision depicted is affected.For drawbacks described above, patent announcement number be CN2607636 and
Existing gear model for demonstration purpose has also been made to improve by two patents of CN2113532, but is all based on the local directed complete set of original agent structure,
Though avoiding some defects, but it being the most loaded down with trivial details to operate.Moreover, existing shaping meter purchase cost is the most of a relatively high.
Summary of the invention:
It is an object of the invention to provide a kind of novel involute gear shaping meter, which obviate the various frauds that existing shaping meter brings
End, makes meshed experiment operate simpler, quick and with low cost, and the present invention is to realize by following technical solution
Above-mentioned purpose.
In the structure of novel involute gear shaping meter, wherein three master gears 2,2 ', 2 are " by rotating shaft 3 circumference all
Cloth is installed on the front of circular bottom plate 1, and " (normal shift) is passed through for the other three gear 7 (standard), 7 ' (negative addendum modifications) and 7
The uniform back side being installed on circular bottom plate 1 of rotating shaft 3, three rotating shafts 3 are installed on circular base by three bearing 15 supportings the most respectively
On plate 1, central shaft 14 is installed on the center of base plate 1 by bearing 16 supporting, and circle paper pallet 4 is fixed on central shaft 14 upper end
Being installed on circular bottom plate front, central gear 13 is installed on the other end of central shaft 14, and is in the back side of base plate 1, center
Gear 13 is driven by DC micromotor 10, its master gear 7 uniform with circumference, negative addendum modification gear 7 ' and gear with positive correction
7 " keeping meshing relation, the installation centre-to-centre spacing of three is different.Tray surface can be filled in for ease of drawing the round paper of flank profil,
Should ensure that round paper pallet and gear 2,2 ' and 2 during installation " between leave the gap of about 0.5mm, pallet 4 surface is coated with Bao Tie
Skin, circle paper is fixing by Magnet 6 absorption, it is to avoid the fold of circle paper during drawing flank profil.
The present invention, compared with existing involute gear shaping meter, has a following technical characteristic:
1. overall structure is the compactest, and during experiment, circle paper is convenient makes by oneself and easily dismount and fixing, and central gear every turn is once
Draw standard and positive and negative profile modified gear flank profil simultaneously, convenient and swift；
2. improve traditional solid paper device, circular blank sheet of paper is fixed by magnet adsorption, it is to avoid the operating process of existing shaping meter
In repeated disassembled and assembled with fixing；
3. use gear to replace the tooth bar simulation involute gear tooth course of processing, utilize gear ratio identical but the different gear of centre-to-centre spacing passes
Moving and realize positive and negative displacement, eliminating tradition shaping meter is to realize displacement to adjust the error that rack cutter position is brought；
4. utilize Single-chip Controlling DC micromotor, be accurately controlled the angle (adjustable angle) of every time rotation, it is to avoid hands
During dynamic operation, the uneven rolling movement envelope track caused of rotational angle describes sparse inequality.
Accompanying drawing illustrates:
Accompanying drawing 1 is the Facad structure schematic diagram of novel involute gear shaping meter proposed by the invention；
Accompanying drawing 2 is the structure schematic diagram of novel involute gear shaping meter proposed by the invention；
Accompanying drawing 3 is central gear meshing relation schematic diagram in Fig. 1；
Accompanying drawing 4 is Fig. 1 shaft and bearing assembling schematic diagram；
Accompanying drawing 5 is central shaft and bearing assembling schematic diagram in Fig. 1.
Detailed description of the invention:
Seeing Fig. 1 to Fig. 5, these five accompanying drawings provide novel one embodiment of involute gear shaping meter proposed by the invention
Appearance assumption diagram.This shaping meter includes that mounting seat, all parts are installed on base disk, and deep-groove ball is passed through in three rotating shafts
Bearings is installed in base disc hole, uniform along disk circumference, and wherein three pairs of gears are respectively arranged in base circle by rotating shaft
The front and back of dish, central shaft is supported by deep groove ball bearing and is installed on base disk central authorities, and central gear is installed by central shaft
In the base disk back side, engaging with three gears of the disk back side uniform installation of circumference, circle paper pallet is fixed on the central shaft other end,
Being installed between three gears that base disk front, pallet and front are installed has small gap, central gear to be installed by support
DC micromotor at the base disk back side drives, and motor is powered by dry cell batteries, and intermittent-rotation angle is by programmable single chip computer
Module controls, and for convenience of operation, base is also equipped with switch and start button.
This shaping meter in use, prepares the big circular blank sheet of paper such as and round tray diameter and fills in pallet and three master gears
Between cutter, drawing is adjusted and is fixed with magnet adsorption after aliging with tray edge, operator's start button, and central gear is by electricity
Machine drives and Single-chip Controlling rotates stopping after special angle a little, draws out three gears engagement positions with pencil on circular blank sheet of paper
Putting the envelope at place, continue to start after having described, so circulation operates and i.e. can get the envelope at whole position of engagement, now,
The tooth curve of normal shift, negative addendum modification and master gear is also just displayed by painted envelope.
The parameter of one embodiment of the novel involute gear shaping meter of the present invention is: central gear 13 modulus m=10mm,
Number of teeth z=20；Master gear 2,2 ', 2 " and the modulus m=10mm of 7, number of teeth z=14；Negative addendum modification gear 7 ' modulus
M=10mm, number of teeth z=14, modification coefficient x=-0.4；" modulus m=10mm, number of teeth z=14 become gear with positive correction 7
Potential coefficient x=+0.4；Master gear 7, negative addendum modification gear 7 ' and gear with positive correction 7 " the installation centre-to-centre spacing with central gear 13
It is respectively 170mm, 165.5mm, 173.8mm；Circle paper pallet diameter d=260mm.
The parameter of three sections of involute profiles that the novel involute gear shaping meter of the present invention is drawn out is: modulus is m=10mm
, the number of teeth (completely) is z=20, and addendum coefficient is ha*=1.0, and tip clearance coefficient is c*=0.25, and modification coefficient is respectively
It is 0 ,-0.4 ,+0.4.
Claims (5)
- The most novel involute gear shaping meter, it is characterised in that: this shaping meter includes mounting seat, in this base disk back side Feeling at ease equipped with central gear, three gears engaged with this central gear are uniform along central gear circumference, coaxial with these three gears The other three gear installed is installed on base disk front, and circle paper pallet and central gear are coaxially mounted to base front surface, circle paper Leaving small gap between three gears that pallet and front are installed, central gear is arranged on the miniature of the base disk back side by support DC motor Driver, is powered by dry cell batteries.
- Involute gear shaping meter the most according to claim 1, it is characterised in that: it is installed on the base disk back side and center Three gears of gear engagement are master gear, negative addendum modification gear and the gear with positive correction that the number of teeth is identical.
- Involute gear shaping meter the most according to claim 1, it is characterised in that: it is installed on three of base disk front Gear is the master gear that the number of teeth is identical.
- Involute gear shaping meter the most according to claim 1, it is characterised in that: circle paper tray surface is coated with sheet iron, Circle paper can be fixed by magnet adsorption when being positioned on pallet.
- Involute gear shaping meter the most according to claim 1, it is characterised in that: DC micromotor is by monolithic able to programme Machine module control realization intermittent-rotation, angle of revolution can be adjusted as required.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510023134.XA CN104517519B (en) | 2015-01-16 | 2015-01-16 | Novel involute gear shaping meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510023134.XA CN104517519B (en) | 2015-01-16 | 2015-01-16 | Novel involute gear shaping meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104517519A CN104517519A (en) | 2015-04-15 |
| CN104517519B true CN104517519B (en) | 2016-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510023134.XA Active CN104517519B (en) | 2015-01-16 | 2015-01-16 | Novel involute gear shaping meter |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810079B (en) * | 2016-04-26 | 2018-08-14 | 昆明理工大学 | A kind of gear model for demonstration purpose |
| CN107507508B (en) * | 2017-10-19 | 2020-06-12 | 郑州轻工业学院 | Novel gear generating instrument |
| CN111915975A (en) * | 2020-05-13 | 2020-11-10 | 衢州职业技术学院 | Design method of novel gear generating machining virtual prototype based on UG NX |
| CN112435538B (en) * | 2020-12-04 | 2022-11-25 | 肇庆市肇梦空间科技有限公司 | University student's occupation planning is guided with device of explaining |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB544556A (en) * | 1939-11-21 | 1942-04-17 | Gleason Works | Method of producing gears |
| CN103927930B (en) * | 2014-04-30 | 2016-03-23 | 吉林大学 | A kind of gearing type gear model for demonstration purpose |
| CN203858810U (en) * | 2014-05-22 | 2014-10-01 | 张远芳 | New gear manufacturing experiment teaching device with integrated gear shaping and gear hobbing |
| CN104183190B (en) * | 2014-08-13 | 2016-08-24 | 浙江大学 | Novel numerical control gear shapping machine demonstrator and demenstration method |
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| CN104517519A (en) | 2015-04-15 |
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