CN103971579B - Automatic gear model for demonstration purpose - Google Patents
Automatic gear model for demonstration purpose Download PDFInfo
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- CN103971579B CN103971579B CN201410157947.3A CN201410157947A CN103971579B CN 103971579 B CN103971579 B CN 103971579B CN 201410157947 A CN201410157947 A CN 201410157947A CN 103971579 B CN103971579 B CN 103971579B
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- gear
- base plate
- movable base
- tooth bar
- frame
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Abstract
The present invention relates to the automatic gear model for demonstration purpose of improvement, comprise frame, the movable base plate coordinated with housing slide, it is furnished with stamp work platform by spring, stamp work platform is provided with the second screw mandrel, rack cutter machining simulation print head, and the second screw mandrel is by driving stepper motor; Movable base plate also installs main shaft by bearing, intrinsic cam, partial gear on main shaft, main shaft passes through a pair cone gear-driven by direct current generator; The also intrinsic incomplete tooth bar engaged with partial gear in frame; Also intrinsic mobile rack on movable base plate, the gears meshing on mobile rack and gear back shaft, gear back shaft lower end is positioned on bracket by bearing, and bracket coordinates with the slide bottom frame, is provided with register pin between bracket and frame; Middle part also intrinsic pallet and the platen dish of gear back shaft, gear back shaft upper end cover has setting-out cutting mechanism.It achieve with generation method automatic simulation processing involute gear, accurately can complete cutter displacement and ground paper setting-out and cutting work.
Description
Technical field
The present invention relates to a kind of teaching demonstration instrument, particularly a kind of gear model for demonstration purpose automatically, can realization generation method automation simulation cut involute gear, and accurately can complete cutter and conjugate and ground paper setting-out and cutting work.
Background technology
When gears generating experiment does in current each engineering and polytechnic universities, first to calculate the reference circle of gear and point circle, then manual drawing reference circle, cutting point circle, make ground paper and put into shaping meter.Need manually to promote tooth bar in experiment and move several millimeters of displacements, after stopping, pin tooth bar, then along rack tooth profile setting-out to show tool marks, this process repeats constantly to carry out, by some tool marks envelope displays by cutting tooth form.This experimental technique not only setting-out error only by artificial setting-out simulation Gear Processing is large, and the poor intuition at cut position, be unfavorable for that student understands Cutting Gear cutting principle and Undercutting Phenomenon, displacement simultaneously because of artificial promotion tooth bar is uneven, the defects such as greatly random and naked eyes location tooth bar " slotting tool " addendum modification is inaccurate, be difficult to obtain repetition setting-out effort accurately attractive in appearance by cutting tooth form, a large amount of in addition time-consuming, after even may affecting laboratory, other course normally carries out.
Summary of the invention
For overcoming above-mentioned drawback, the invention provides a kind of gear model for demonstration purpose automatically, ground paper shearing can be completed, reference circle is rule, tooth bar accurately conjugates and emulates Gear Processing.
Technical scheme of the present invention: a kind of gear model for demonstration purpose automatically, comprise frame 28, bottom frame 28, be provided with left and right sides chute, be furnished with left slider 32 and right side slide block 29 in left and right sides chute respectively, left slider 32 and right side slide block 29 are fixed together with movable base plate 27; Movable base plate 27 is fixed with guide rod 26, and on guide rod 26, cover has spring 25, and stamp work platform 23 to be arranged on spring 25 and to be slidably matched with guide rod 26; Stamp work platform 23 is provided with stepper motor 22, stepper motor 22 drives the second screw mandrel 11 to rotate, and the second screw mandrel 11 is furnished with rack cutter machining simulation print 10; Movable base plate 27 is also fixed with left bearing 12 and the right bearing 21 of coaxial line, main shaft 20 is just arranged in left bearing 12 and right bearing 21, main shaft 20 is installed with left cam 13, first conical gear 14, partial gear 18, right cam 19, when left cam 13, right cam 19 are rotated, pushes stamp work platform 23 downwards; First conical gear 14 engages with the second conical gear 15 that direct current generator 16 output shaft is fixedly mounted with, and direct current generator 16 is arranged on machine operation platform 30, and machine operation platform 30 is fixed on movable base plate 27; Frame 28 is also fixed with incomplete tooth bar 17, and incomplete tooth bar 17 engages with partial gear 18, and incomplete tooth bar 17 is furnished with Locking arc 36;
Movable base plate 27 is also fixed with mobile rack 33, mobile rack 33 engages with gear 2, ensure by gear cutting machine reference circle and tooth bar " slotting tool " nodel line tangent, and mutually make pure rolling, gear 2 is packed on gear back shaft 7, gear back shaft 7 lower end is arranged on bracket 35 by clutch shaft bearing 1, and bracket 35 is slidably matched with the chute 34 bottom frame 28, utilizes the location, position of both register pin 41 realizations and fixes; The middle part of gear back shaft 7 is also fixed with the platen dish 8 of pallet 3 and threaded engagement, gear back shaft 7 upper end is cone shape, its cone coordinates with the circular cone through hole of the first screw mandrel 6 end, and on the first screw mandrel 6, threaded engagement has pivoted arm 5, pivoted arm 5 is provided with the combination writing of indictments, appeals, etc. 4.
Described rack cutter machining simulation print 10 comprises tooth bar " slotting tool ", flank profil blade 40 thick 1-2 millimeters (containing tooth top and dual-side flank profil) is retained at tooth bar " slotting tool " lower surface, the sponge groove of dress sponge 38 is offered in inclination groove, tooth bar " slotting tool " upper surface is furnished with oil hole 37, outstanding wrapping containing big basin-like inkstone continuous 38 and flank profil periphery in lower surface ink print cloth 39 pairs of sponge grooves.
The present invention integrates ground paper setting-out, cutting, cutter accurately conjugate, emulate the technology such as Gear Processing, is aided with on-screen keyboard, realizes automatic simulation processing.Emulation Gear Processing mechanism simulation cutting knife impression, understands gear enveloping process principle with making student's visual pattern; Digital Control realizes the accurate displacement of tooth bar " slotting tool ", can obtain the processing profile of tooth of master gear and X-gear accurately, makes student understand the Undercutting Phenomenon of Gear Processing process better, grasps the method avoiding root to cut.Auxiliary setting-out cutting mechanism realizes the cutting of point circle and the drafting of reference circle easily, the removable design of bracket facilitates picking and placeing of drawing ground paper, unique continuous embossed machining simulation of tooth bar " slotting tool " robotization, greatly can shorten non-drawing time, improves conventional efficient.It meets the requirement that vast science and engineering universities and colleges improve teaching appliance upgrading, and its complete function, cheap, both artistic and practical simultaneously, for student provides a perfection, comfortable experimental learning platform, can be widely used in the teaching of vast science and engineering universities and colleges.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is partial gear rack structure schematic diagram in the present invention.
Fig. 3 is middle rack cutter machining simulation printing head structure schematic diagram of the present invention.
Fig. 4 is the amplification cut-away view of A-A in Fig. 3.
In figure: 1 clutch shaft bearing, 2 gears, 3 pallets, the 4 combination writing of indictments, appeals, etc., 5 pivoted arms, 6 first screw mandrels, 7 gear back shafts, 8 platen dishes, 9 ground paper, 10 rack cutter machining simulation print heads, 11 second screw mandrels, 12 left bearings, 13 left cam, 14 first conical gears, 15 second conical gears, 16 direct current generators, 17 incomplete tooth bars, 18 partial gears, 19 right cam, 20 main shafts, 21 right bearings, 22 stepper motors, 23 stamp work platforms, 24 slide blocks, 25 springs, 26 guide rods, 27 movable base plates, 28 frames, slide block on the right side of in the of 29, 30 machine operation platforms, 31 second bearings, 32 left sliders, 33 mobile racks, 34 chutes, 35 brackets, 36 Locking arc, 37 oil holes, 38 sponges, 39 ink print cloth, 40 blades, 41 register pins.
Embodiment
As shown in drawings, the present invention includes movable base plate 27, left slider 32 and right side slide block 29 are installed bottom movable base plate 27, can slide in the groove of frame 28; Movable base plate 27 upper surface consolidation four is arranged symmetrically with guide rod 26, and on the left of movable base plate 27 upper surface and right side is consolidation left bearing 12 and right bearing 21 respectively.Four guide rods 26 are set with spring 25, guide rod 26 is slidably matched by slide block 24 and stamp work platform 23, second screw mandrel 11 and rack cutter machining simulation are installed on the left of stamp work platform 23 print head 10(rack cutter machining simulation and print 10 inside and arrange and contain big basin-like inkstone silk floss 38, top is furnished with oil hole 37, bottom is wrapped up containing big basin-like inkstone continuous 38 and flank profil " blade " periphery by ink print cloth 39), second screw mandrel 11 left end is supported by the second bearing 31, and right-hand member is connected with stepper motor 22 by shaft coupling; Movable base plate is fixed with machine operation platform 30, machine operation platform 30 is provided with direct current generator 16, direct current generator 16 is by the first conical gear 14 and the second conical gear 15 transmitting torque, and drive installation is at the main shaft 20 of left bearing 12 and right bearing 21.Main shaft 20 is fixed with left cam 13, right cam 19 and partial gear 18, promote stamp work platform 23 when left cam 13 and right cam 19 synchronous axial system and move up and down along guide rod 26, partial gear 18 coordinates with incomplete tooth bar 17.Input keyboard, screen and associated circuit board are installed in frame 28 top, direct current generator 16 and stepper motor 22 are controlled, the chute 34 that frame 28 left end is arranged coordinates with bracket 35 and slides, and utilizes the register pin of the horizontal direction position realized between chute 34 and bracket 35 to locate and fixes.Clutch shaft bearing 1 is arranged on bracket 35, gear back shaft 7 bottom is arranged in clutch shaft bearing 1, pallet 3 and gear 2 is fixedly mounted with in the middle part of gear back shaft 7, its middle gear 2 and mobile rack 33 engaged transmission, there is threaded portion that platen dish 8 is installed in the middle part of gear back shaft 7, upper cone profile shaft section place cover has on the first screw mandrel 6, first screw mandrel 6 installs pivoted arm 5, and installation combination writing of indictments, appeals, etc. 4(one end, pivoted arm 5 front end is the cutter other end is an Intermediate Gray mounting hole).
When using of the present invention, first extract register pin 41, the main worktable that gear 2, pallet 3 are formed moves to left by movable support bracket 35, allows gear 2 depart from mobile rack 33; Ground paper 9 is placed on pallet 3, screws platen dish 8 pairs of ground paper 9 and position compression.Circular cone through hole on the first screw mandrel 6 in the setting-out cutting mechanism be made up of the first screw mandrel 6, pivoted arm 5, the combination writing of indictments, appeals, etc. 4 is enclosed within the upper end of gear back shaft 7; By rotating pivoted arm 5(, it is marked with length scale) regulate the distance combining nib and gear back shaft 7 axle center in the writing of indictments, appeals, etc. 4, rotate by holding paintbrush the drafting realizing preliminary dimension reference circle around gear back shaft 7.Complete reference circle draw after, writing of indictments, appeals, etc. switching is carried out in the rotation combination writing of indictments, appeals, etc. 4, allow point of a knife on ground paper 9 around gear back shaft 7 respectively half revolution realize the semi-circumference cutting of master gear and predetermined X-gear point circle.After completing above-mentioned work, take out setting-out cutting mechanism, move right bracket 35, inserts register pin 41 and reset, gear 2 is engaged with mobile rack 33 standard, adjust by trimscript accurate gear compound graduation circle its semi-circumference midpoint and tooth bar " slotting tool " center line tangent.Register pin 41 between bracket 35 and chute 34, can prevent gear 2, mobile rack 33 engaged transmission phase mutual edge distance from changing.Again mobile rack 33 is pushed into the extreme position at mobile two ends.
Then start direct current generator 16, drive the left cam 13 be fixed on main shaft 20, partial gear 18, right cam 19 synchronous axial system respectively by the first conical gear 14 and the second conical gear 15.Left cam 13 and right cam 19 are in rise motion, pressing stamp work platform 23, be forced through the rack cutter machining simulation print 10 that screw pair is connected on the left of stamp work platform 23 to move downward, make it on ground paper 9, print off ink tool marks, thus realize the cutting simulation of tooth bar " slotting tool "; The elastic force utilizing spring 25 to produce in left cam 13 and right cam 19 drawback movement promotes stamp work platform 23 and resets.The incomplete tooth bar 17 of partial gear 18 pushing in left cam 13 and right cam 19 drawback movement, because incomplete tooth bar 17 is fixed in frame 28, utilize relative motion principle, partial gear 18 just drives movable base plate 27 and stamp work platform 23 above and machine operation platform 30 thereof to move horizontally a bit of distance, and mobile rack 33 driven wheel 2 simultaneously on the left of movable base plate 27 and ground paper 9 rotate a corresponding angle and realize rolling movement.After ground paper 9 rotates, the Locking arc 36 on incomplete tooth bar 17 pins partial gear 18, makes it ensure that movable base plate 27 is static when rack cutter machining simulation print 10 impression ground paper.The above-mentioned motion of periodic cycle, just can impress out a series of ink tool marks, realize generation method simulation of gear machining fast and accurately on ground paper 9.In motion process, limit switch is used to control the fore/aft travel of movable base plate 27.
After completing master gear drafting, unscrew platen dish 8, compress after ground paper is rotated 180 degree, predetermined modification coefficient is inputted in keyboard, press the switch activated stepper motor 22 of displacement, stepper motor 22 drives the second screw mandrel 11 to rotate by shaft coupling, realizes rack cutter machining simulation print 10 and conjugates accurately, again start direct current generator 16 and realize complete machine backhaul impression, emulate the processing of X-gear.Test rear powered-down, allowed bracket 35 skid off main worktable, take off the ground paper 9 of drafting.
The content be not described in detail in this instructions is the known prior art of professional and technical personnel in the field.
Claims (2)
1. an automatic gear model for demonstration purpose, it is characterized in that: comprise frame (28), frame (28) bottom is provided with left and right sides chute, be furnished with left slider (32) and right side slide block (29) in left and right sides chute respectively, left slider (32) and right side slide block (29) are fixed together with movable base plate (27); Movable base plate (27) is fixed with guide rod (26), and on guide rod (26), cover has spring (25), and stamp work platform (23) is arranged in spring (25) and goes up and be slidably matched with guide rod (26); Stamp work platform (23) is provided with stepper motor (22), stepper motor (22) drives the second screw mandrel (11) to rotate, and the second screw mandrel (11) is furnished with rack cutter machining simulation print head (10); Movable base plate (27) is also fixed with left bearing (12) and right bearing (21), main shaft (20) is just arranged in left bearing (12) and right bearing (21), main shaft (20) is fixed with left cam (13), the first conical gear (14), partial gear (18), right cam (19), when left cam (13), right cam (19) are rotated, pushes stamp work platform (23) downwards; First conical gear (14) engages with the second conical gear (15) that direct current generator (16) output shaft is fixedly mounted with, and direct current generator (16) is arranged on machine operation platform (30), and machine operation platform (30) is fixed on movable base plate (27); Frame (28) is also provided with incomplete tooth bar (17), and incomplete tooth bar (17) engages with partial gear (18), incomplete tooth bar (17) is furnished with Locking arc (36);
Movable base plate (27) is also fixed with mobile rack (33), mobile rack (33) engages with gear (2), gear (2) is arranged on gear back shaft (7), gear back shaft (7) lower end is arranged on bracket (35) by clutch shaft bearing (1), the chute (34) of bracket (35) and frame (28) bottom is slidably matched, and is provided with register pin (41) between the chute (34) in bracket (35) and frame (28); The middle part of gear back shaft (7) is also fixed with the platen dish (8) of pallet (3) and threaded engagement, gear back shaft (7) upper end is cone shape, its cone coordinates with the circular cone through hole of the first screw mandrel (6) end, the upper threaded engagement of first screw mandrel (6) has pivoted arm (5), pivoted arm (5) is provided with the combination writing of indictments, appeals, etc. (4).
2. the automatic gear model for demonstration purpose of one according to claim 1, it is characterized in that: described rack cutter machining simulation print head (10) comprises tooth bar " slotting tool ", flank profil blade (40) thick 1-2 millimeters are retained at tooth bar " slotting tool " lower surface, the sponge groove of dress sponge (38) is offered in inclination groove, tooth bar " slotting tool " upper surface is furnished with oil hole (37), and lower surface ink prints cloth (39) to outstanding wrapping containing big basin-like inkstone silk floss (38) and flank profil periphery in sponge groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410157947.3A CN103971579B (en) | 2014-04-21 | 2014-04-21 | Automatic gear model for demonstration purpose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410157947.3A CN103971579B (en) | 2014-04-21 | 2014-04-21 | Automatic gear model for demonstration purpose |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103971579A CN103971579A (en) | 2014-08-06 |
| CN103971579B true CN103971579B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410157947.3A Expired - Fee Related CN103971579B (en) | 2014-04-21 | 2014-04-21 | Automatic gear model for demonstration purpose |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105225598B (en) * | 2014-07-05 | 2018-06-29 | 桂林理工大学 | Gear model for demonstration purpose |
| CN104361821B (en) * | 2014-11-28 | 2017-11-07 | 宁波大学 | A kind of gear enveloping apparatus for demonstrating for being used to impart knowledge to students |
| CN104882060B (en) * | 2015-06-09 | 2017-06-27 | 成都大学 | A kind of new gear meshed experiment machine |
| CN105206163A (en) * | 2015-10-14 | 2015-12-30 | 吉林化工学院 | Semiautomatic gear generation instrument |
| CN105374271B (en) * | 2015-12-02 | 2018-03-06 | 上海大学 | Portable gear drive and processing demonstrator |
| CN105469685B (en) * | 2015-12-16 | 2018-02-23 | 桂林电子科技大学 | Gear Processing demonstration combined teaching aid |
| 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 |
| CN108407059A (en) * | 2018-03-29 | 2018-08-17 | 重庆新康洁具有限责任公司 | Ceramic product production equipment |
| CN108516870B (en) * | 2018-03-29 | 2020-05-12 | 重庆新康洁具有限责任公司 | Glazing process for sanitary ware |
| CN109360481A (en) * | 2018-12-05 | 2019-02-19 | 桂林理工大学 | A kind of gear model for demonstration purpose |
| CN110570745B (en) * | 2019-09-12 | 2021-05-25 | 武汉轻工大学 | Automatic generating instrument |
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| CN103971579A (en) | 2014-08-06 |
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