CN105206170A - Motion analysis platform for cam follower - Google Patents
Motion analysis platform for cam follower Download PDFInfo
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- CN105206170A CN105206170A CN201510713486.8A CN201510713486A CN105206170A CN 105206170 A CN105206170 A CN 105206170A CN 201510713486 A CN201510713486 A CN 201510713486A CN 105206170 A CN105206170 A CN 105206170A
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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
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Abstract
The invention discloses a motion analysis platform for a cam follower. The motion analysis platform comprises a cam change-over lever set mechanism arranged on a main bracket, a paper advance mechanism and a transmission mechanism, wherein paper advance shafts are symmetrically arranged on the upper side and the lower side of a paper advance base plate on the paper advance mechanism; paper advance wheels are arranged on the paper advance shafts and meshed with paper advance wheel holes up and down; a gear reducer in the transmission mechanism is connected with a cantilever shaft; the cantilever shaft is connected with a camshaft through a bevel gear transmission mechanism; a cam is arranged on the camshaft; the cantilever shaft is connected with the paper advance shafts through a synchronous pulley mechanism; swing rods in the cam change-over lever set mechanism are hinged to be X-shaped; a telescopic rod is propped against the outer circumference of the cam; an advance penholder is connected with a pen cap; the pen cap is hinged to the swing rods and connected with a drawing pen. According to the motion analysis platform, the chord-line method and the similar triangle principle are used together, the displacement diagram, the velocity diagram and the acceleration diagram of the cam can be continually and accurately drawn through a lever mechanism, comprehension of the mechanical structure and the cam by students can be deepened, the learning efficiency is improved, and the teaching quality is also improved.
Description
Technical field
The present invention relates to tutor auxiliary platform equipment technical field, refer more particularly to a kind of cam follower motion analysis platform.
Background technology
As long as cam mechanism basic characteristics are to make suitable cam contour, driven member just can be made to realize the motion (comprising straight line, swing, constant speed and variable-speed motion) of various complexity, and simple and compact for structure, take up space little, design comparison is convenient.In recent years, with the application of computing machine and CNC processing technology, cam manufacture and cam mechanism be designed with revolutionary change, cam mechanism gets more and more, and application is more and more wider, has become a kind of important gear train.Meanwhile, China all obtains huge advance in the Theory and applications research of cam mechanism or in the product development of cam mechanism and manufacture view.Although China reaches advanced international standard in theoretical research, but at cam manufacture view, compared with developed countries, still there is a certain distance in China, main cause is cam contour is Curve Machining difficulty, and the aggregate level of China's machinery manufacturing industry is not high.Thus the teaching of cam seems particularly important.
In the teaching of cam mechanism, explain theoretically, its action is more abstract, students at school time truly clearly cannot see its movement locus, its rule can only be described abstractively according to existing knowledge and thinking.Existing cam mechanism be designed with two kinds of methods: analytical method and graphical method.Although analytical method can design accurately, calculate the radial dimension of each point on cam profile exactly, very not directly perceived, it is particularly difficult to learn for student weak in math.And although graphical method intuitive is strong, easily by student is accepted, constructional error is comparatively large, is only applicable to the not too strict place of driven member requirement.For the cam that accuracy requirement is higher, diagram rule is not too suitable.The described transmission in teaching cam mechanism has become Focal point and difficult point.
By patent retrieval, there is following known prior art:
Patent 1:
Application number: 201420287189.2, the applying date: 2014-05-30, the open day for announcing: 2014-10-01, this invention belongs to teaching aid technical field, disclose a kind of multiple degrees of freedom cam instructional device, comprise base plate, support, input shaft, constitute multiple degrees of freedom cam instructional device by the transmission between multiple particular gear, actual presentation pinnacle push rod, flat push rod, fork can act on process cam generating stroke curve.Can stop at any time manually draw stroke curve and carry out tracing analysis; Can change difference and producing cause that eccentric throw contrasts many curves, operation freely, flexibly; This device also draws cam by stroke curve, understands the generative process of cam, makes student more intuitivism apprehension reversal process can design the principle of cam.This device can be demonstrated as classroom instruction again can as student experimenting equipment; Student's operating ability can not only be improved, the corresponding relation of cam and stroke curve can also be analyzed at any time, improve students ' interest of study.
Patent 2:
Application number: 201420195809.X, the applying date: 2014-04-21, the open day for announcing: 2014-10-29, this invention provides a kind of cam instructional device, comprises substrate, execution module and acceleration module.Execution module comprises fixed head, the first driving member, drawing board, cam, polished rod, impeller and the first paintbrush.Fixed head movable is fixed on substrate.First driving member band moving cam and drawing board motion, contact with impeller in cam and drawing board motion process and drive impeller to move up and down, and the motion of impeller drives the first paintbrush to move, thus draws out the curve movement of cam.Contrary, according to the curve movement of cam, impeller draws the outline line of cam on drawing board.Acceleration module comprises flat board, control circuit, the second driving member, the second paintbrush frame and the second paintbrush.Dull and stereotyped movable is fixed on substrate.Control circuit detects the movement velocity of polished rod in real time, and by this detection control second driving member, thus drive the second paintbrush to draw out the accelerating curve of cam.
By retrieving discovery above, above technical scheme can not affect novelty of the present invention; And the mutual combination of above patent document can not destroy creativeness of the present invention.
Summary of the invention
The object of the invention is for above problem, a kind of cam follower motion analysis platform is provided, this cover mechanism shows the drawing process of cam follower motion rule intuitively, deepen the understanding of student to physical construction and cam, motivate students' interest in learning, improve the manipulative ability of student, Developing Students ' innovative thinking, effectively improve the quality of teaching and efficiency, teaching significance is far-reaching.
For realizing above object, the technical solution used in the present invention is: a kind of cam follower motion analysis platform, and it comprises the cam selector bar group mechanism being arranged on total pedestal upper end, the paper advance mechanism of lower end, and the gear train of side, is characterized in that,
Described total support comprise symmetrically arranged two pieces of outer baffles (1) and middle connect fixed bar (18), auxiliary rod (19), walk penholder (20);
Described paper advance mechanism comprises being horizontally set on walks Paper baseplate (2) between outer baffle (1); Described walk Paper baseplate (2) upper and lower surface be provided with away reel (23) symmetrically, walk reel (23) is evenly provided with paper feed wheel (22); Described paper feed wheel (22) up and down symmetry is engaged in paper feed wheel bore (27);
Described gear train comprises the gear reduction box (9) being arranged on total frame bottom and being connected with motor (8); Described gear reduction box (9) is connected with cantilevered axle (10); Described cantilevered axle (10) is connected with camshaft (14) by bevel gear transmission (13); Described camshaft (14) is evenly provided with vertically three cams (15); Described cantilevered axle (10) by synchronous pulley mechanism (12) with walk reel (23) and be connected;
Described cam selector bar group mechanism comprises the expansion link (16) be arranged between two pieces of outer baffles (1); Described expansion link (16) is hinged with fork (21); Described fork is interconnected to X-shaped shape by articulated manner between (21), and the pin joint between described fork (21) is slidably connected with fixed bar (17), motion bar (18) respectively by linear bearing; Described expansion link (16) one end is against on corresponding cam (15) excircle respectively, is provided with back-moving spring (25) between the other end and outer baffle (1); Describedly walk penholder (20) is connected with the pen cap (24) by linear bearing; The described pen cap (24) is hinged with fork (21); The described pen cap is provided with ruling pen in (24).
Further, described side outer baffle (1) inner side is provided with deceleration boxboard (3); Described deceleration boxboard (3) four angles connect and compose reducer casing installing space by connecting link (5) and side outer baffle (1); Described gear reduction box (9) is arranged in reducer casing installing space; Motor fixing plate (4) is provided with between described deceleration boxboard (3) and opposite side outer baffle (1); Described motor fixing plate (4) is provided with motor (8).
Further, walk reel (23) two ends described in be fixed on outer baffle (1) by ball bearing.
Further, described expansion link (16) two ends are fixed on outer baffle (1) by linear bearing.
Further, three described cams (15) all with camshaft (14) for the center of circle, in the same direction rotate depart from certain angle; Between described cam (15), deviation angle is identical.
Further, described cantilevered axle (10) is fixed by fixed mount (6); Described camshaft (14) is fixed hanging deck (7) by upper and lower two panels and is fixed; Described fixing hanging deck (7), fixed mount (6) are all arranged on outer baffle-plate (1) outside.
Further, described outer baffle (1) is provided with the strip waist-shaped hole (26) of horizontal direction; Described motion bar (17) two ends are in waist-shaped hole (26);
Further, the described pen cap (24) comprises the pen cap one (41), the pen cap two (42), the pen cap three (43); Described expansion link (16) comprises expansion link one (61), expansion link two (62), expansion link three (63); Described fork (21) comprises fork one (31), fork two (32), fork three (33), fork four (34), fork five (35), fork six (36), fork seven (37), fork eight (38); Described fork one (31) end and fork two (32) middle-end, fork four (34) end are hinged on fixed bar (18) same point, middle-end and fork six (36) middle-end are hinged on motion bar (17) same point, front end and the pen cap one (41) hinged; Described fork two (32) front end and the pen cap two (42) hinged, end is hinged on fixed bar (18); Described fork three (33) front end and the pen cap three (43) hinged, rear end is hinged on fixed bar (18), and middle-end and fork four (34) front end are hinged on expansion link one (61) same point; Described fork four (34) middle-end and fork five (35) middle-end are hinged on motion bar (17) same point; Described fork five (35) front end and fork seven (37) front end are hinged on expansion link two (62) same point, and end is hinged on fixed bar (18); Described fork six (36) front end is hinged on auxiliary rod (19), and end and fork seven (37) end are hinged on fixed bar (18) same point; Described fork seven (37) middle-end and fork eight (38) are hinged on motion bar (17) same point; Described fork eight (38) front end is hinged on expansion link (63), and end is hinged on fixed bar (18).
Further, one end that described expansion link (16) contacts with cam (15) excircle, end is provided with miniature bearing (30).
Further, described outer baffle (1), deceleration boxboard (3), walk Paper baseplate (2), motor fixing plate (4) is organic glass.
Beneficial effect of the present invention:
1, have employed multiple mechanical transmission mechanism in the present invention, comprise straight spur gear mechanism, bevel gear mechanism, toothed belt transmission, cam mechanism, leverage, friction wheel mechanism, is combined by multiple mechanical transmission structure and embodies mechanical principle knowledge, and be arranged on transparent poly (methyl methacrylate) plate, very clear, greatly improve student to the learning interest of mechanical drive knowledge, improve student to the understanding of mechanical principle.
2, the present invention utilizes chord_line method in conjunction with similar triangle theory, realizes by leverage the displacement diagram, velocity diagram, the acceleration diagram that draw cam continuously exactly; By means of this device, we clearly can analyze cam in each moment, the motion conditions under each state, and convenient teaching, promotes and disperse student thought, make whole teaching process more fascinating, improve the learning interest of student, improve the quality of teaching.
3, simple and stable structure of the present invention, light, low cost of manufacture, suitable production in enormous quantities, practical.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is the structural representation at rear portion of the present invention.
Fig. 3 is front elevation of the present invention.
Fig. 4 is cam selector bar group mechanism structure schematic diagram of the present invention.
Fig. 5 is the partial structurtes schematic diagram of cam selector bar group mechanism of the present invention.
Fig. 6 is the sectional structure schematic diagram of cam selector bar group mechanism of the present invention.
Fig. 7 is the structural relation schematic diagram of cam of the present invention and expansion link.
Fig. 8 is the expanded view of local A in Fig. 1.
Fig. 9 is that the present invention draws out the schematic diagram of cam displacement, speed, acceleration by paper feed.
Shown in figure, numerical reference is expressed as: 1, outer baffle, 2, walk Paper baseplate, 3, deceleration boxboard, 4, motor fixing plate, 5, connecting link, 6, fixed mount, 7, fixing hanging deck, 8, motor, 9, gear reduction box, 10, cantilevered axle, 11, secondary spur gear reducing gear, 12, , synchronous pulley mechanism, 13, bevel gear transmission, 14, camshaft, 15, cam, 16, expansion link, 17, motion bar, 18, fixed bar, 19, auxiliary rod, 20, walk penholder, 21, fork, 22, paper feed is taken turns, 23, walk reel, 24, the pen cap, 25, back-moving spring, 26, waist-shaped hole, 27, paper feed wheel bore, 28, driven shaft, 29, paper feed, 30, miniature bearing, 31, fork one, 32, fork two, 33, fork three, 34, fork four, 35, fork five, 36, fork six, 37, fork seven, 38, fork eight, 41, the pen cap one, 42, the pen cap two, 43, the pen cap three.
Embodiment
In order to make those skilled in the art understand technical scheme of the present invention better, describe the present invention below in conjunction with accompanying drawing, the description of this part is only exemplary and explanatory, should not have any restriction to protection scope of the present invention.
As shown in figs 1-9, anatomical connectivity of the present invention closes and is: a kind of cam follower motion analysis platform, and it comprises the cam selector bar group mechanism being arranged on total pedestal upper end, the paper advance mechanism of lower end, and the gear train of side, is characterized in that,
Described total support comprise symmetrically arranged two pieces of outer baffles 1 and middle connect fixed bar 18, auxiliary rod 19, walk penholder 20;
Described paper advance mechanism comprises being horizontally set on walks Paper baseplate 2 between outer baffle 1; Described walk Paper baseplate 2 upper and lower surface be provided with away reel 23 symmetrically, walk reel 23 is evenly provided with paper feed wheel 22; Described paper feed wheel about 22 symmetries are engaged in paper feed wheel bore 27;
Described gear train comprises the gear reduction box 9 being arranged on total frame bottom and being connected with motor 8; Described gear reduction box 9 is connected with cantilevered axle 10; Described cantilevered axle 10 is connected with camshaft 14 by bevel gear transmission 13; Described camshaft 14 is evenly provided with three cams 15 vertically; Described cantilevered axle 10 by synchronous pulley mechanism 12 with walk reel 23 and be connected;
Described cam selector bar group mechanism comprises the expansion link 16 be arranged between two pieces of outer baffles 1; Described expansion link 16 is hinged with fork 21; Be interconnected to X-shaped shape by articulated manner between described fork 21, the pin joint between described fork 21 is slidably connected with fixed bar 17, motion bar 18 respectively by linear bearing; Described expansion link 16 one end is against on corresponding cam 15 excircle respectively, is provided with back-moving spring 25 between the other end and outer baffle 1; Describedly walk penholder 20 is connected with the pen cap 24 by linear bearing; The described pen cap 24 is hinged with fork 21; Ruling pen is provided with in the described pen cap 24.
Preferably, deceleration boxboard 3 is provided with inside described side outer baffle 1; Described deceleration boxboard 3 four angles connect and compose reducer casing installing space by connecting link 5 and side outer baffle 1; Described gear reduction box 9 is arranged in reducer casing installing space; Motor fixing plate 4 is provided with between described deceleration boxboard 3 and opposite side outer baffle 1; Described motor fixing plate 4 is provided with motor 8.
Preferably, walk reel 23 two ends described in be fixed on outer baffle 1 by ball bearing.
Preferably, described expansion link 16 two ends are fixed on outer baffle 1 by linear bearing.
Preferably, three described cams 15 all with camshaft 14 for the center of circle, in the same direction rotate depart from certain angle; Between described cam 15, deviation angle is identical.
Preferably, described cantilevered axle 10 is fixed by fixed mount 6; Described camshaft 14 is fixed hanging deck 7 by upper and lower two panels and is fixed; Described fixing hanging deck 7, fixed mount 6 are all arranged on outside outer baffle-plate 1.
Preferably, described outer baffle 1 is provided with the strip waist-shaped hole 26 of horizontal direction; Described motion bar 17 two ends are in waist-shaped hole 26;
Preferably, the described pen cap 24 comprises the pen cap 1, the pen cap 2 42, the pen cap 3 43; Described expansion link 16 comprises expansion link 1, expansion link 2 62, expansion link 3 63; Described fork 21 comprises fork 1, fork 2 32, fork 3 33, fork 4 34, fork 5 35, fork 6 36, fork 7 37, fork 8 38; Described fork 1 end and fork 2 32 middle-end, fork 4 34 end are hinged on fixed bar 18 same point, and middle-end and fork 6 36 middle-end are hinged on motion bar 17 same point, front end and the pen cap 1 hinged; Described fork 2 32 front end and the pen cap 2 42 hinged, end is hinged on fixed bar 18; Described fork 3 33 front end and the pen cap 3 43 hinged, rear end is hinged on fixed bar 18, and middle-end and fork 4 34 front end are hinged on expansion link 1 same point; Described fork 4 34 middle-end and fork 5 35 middle-end are hinged on motion bar 17 same point; Described fork 5 35 front end and fork 7 37 front end are hinged on expansion link 2 62 same point, and end is hinged on fixed bar 18; Described fork 6 36 front end is hinged on auxiliary rod 19, and end and fork 7 37 end are hinged on fixed bar 18 same point; Described fork 7 37 middle-end and fork 8 38 are hinged on motion bar 17 same point; Described fork 8 38 front end is hinged on expansion link 63, and end is hinged on fixed bar 18.
Preferably, one end that described expansion link 16 contacts with cam 15 excircle, end is provided with miniature bearing 30.
Preferably, described outer baffle 1, deceleration boxboard 3, walk Paper baseplate 2, motor fixing plate 4 is organic glass.
Overall construction design:
Because this device is teaching demonstration instrument, therefore want intuitively small and exquisite, and want lightweight, be convenient to mobile, but also must there be certain strength and stiffness, guarantee the weight sustaining motor, gear and annex thereof, study decision use poly (methyl methacrylate) plate to do external baffle in order to can be observed us intuitively, and poly (methyl methacrylate) plate has certain intensity can bear the weight of whole mechanism completely.First motor and reducer casing part in global design, motor is originated as the driving force of whole device, and motor and reducer casing are placed on the below of whole device by us, are conducive to device so attractive in appearance, and facilitate transmission.Then be cam portion, we adopt the structure of semi-girder, and such setting is not only attractive in appearance but also quick detachable, is convenient for changing different cams.Moreover be bar group part, because the principle adopted is the method mapping of similar triangles, described we adopt fixing thin bar to do support bar, and fork does drive link, can reduce the weight of device like this, also be conducive to transmission.Then be encircled portion, in order to enable mechanism reduce resistance, we are provided with three groups of wheels, then make backing plate with one piece of poly (methyl methacrylate) plate and reduce friction.
The design of reducer casing part:
Needed for mechanism, driving force is comparatively large, and consumed power is comparatively large, and described we drive with the individual event motor of 120W, 1400r/min, but the speed of mapping own can affect the accuracy of mapping too soon, and therefore we to be slowed down rotating speed by reducer casing.The straight spur gear that motor is 5.25 through reducer casing by four stage gear ratios is decelerated to 1.84r/min.Reducer casing is divided into two parts after exporting, a part is rotated through the bevel gear steering ribbon moving cam axle of 1:3, and another part passes to paper feed wheel line shaft at a distance by synchronous pulley after the straight spur gear that ratio of gear is 1:3 slows down, and realizes the synchronous of paper advance mechanism and cam set.
Cam portion designs:
Cam adopts cantilever beam structure to fix, directly driving force is done by an axle, three cams are driven to rotate, camshaft connects low speed bevel gear, the angle hole direct fixed angle of cam by cam makes, realize the rotation of different angles, owing to having axial force and radial force on camshaft, described employing thrust bearing and deep groove ball bearing ensure working well of axle.
Cam selector bar group mechanism design:
Bar group starts to be on driven member, directly adopt its shift position to obtain displacement diagram, in order to make driven member reset, adding spring make it reset at driven member end, is displaced through fork to ask speed then by driven member.Fork part is as the core of this device, it is divided into three layers, because adopt similar triangle theory to transmit the height of displacement difference, X-shaped formula is linked to be by hinged between described fork and fork, when drawing velocity diagram, two end points of X bar group are hinged on two adjacent push rods, also have an end points to rotate around point of fixity in addition, the distance of the remaining relative fixed endpoint of that end points is exactly the displacement difference of two push rods, can obtain speed by this displacement difference.Three groups of push rods obtain two speed, in like manner can obtain an acceleration.For moving on same end face by three sources of graph, speed and displacement all have employed a parallel push rods and are moved by pen at one end corresponding with acceleration.In order to reduce the resistance in fork motion, we add the carrier that on location slender axles slide of linear bearing as fork in fork supporting construction.For preventing bearing from rotating on bar, some also adopt pair of bearings with the use of form.
Paper feed partial design
In the design of paper advance mechanism, we are with three groups of roller synchronism output, and dress lastblock backing plate is used for supporting drawing in the middle of roller, that group roller of output terminal is driving wheel, and other two groups is engaged wheel, is loaded by paper from input end, drawing device then draws on paper correspondingly has track, until roll out from output terminal, like this, paper tape below just can export when starting shooting automatically.
Principle of work of the present invention:
(1) drawing principle of the displacement diagram of driven member motion
Adopt Direct graphic method method, motor driving cam makes uniform motion, the ruling pen side-to-side movement in band moving cam selector bar group mechanism, by the transmission of synchronous pulley, ensure that paper tape and cam are synchronized with the movement, the ruling pen on driven member just depicts displacement diagram, and this device is that surface level is drawn.
(2) drawing principle of the velocity diagram of driven member motion
Chord_line method: by V=△ S/ △ t, be deformed into V=△ S*K1, wherein K1 is speed proportional coefficient, as long as the described △ of recording S just can try to achieve speed, △ S is recorded by similar triangle theory.
Similar triangle theory: two forks are hinged to X bar group, wherein two end points are hinged on two adjacent push rods, another one end points is fixed, and the distance of the remaining relative fixed endpoint of that end points is exactly the displacement difference of two push rods, then on this end points, adds a pen can draw velocity diagram.
(3) drawing principle of the acceleration diagram of driven member motion
Two groups of bars " induction " go out a speed, and three groups of bars " induction " go out two speed.
Chord_line method: according to a=△ v/ △ t, be deformed into a=△ v*K2, wherein k2 is acceleration scale-up factor, as long as the described △ of recording v just can record acceleration.△ v is recorded by similar triangle theory, two forks are hinged to X bar group, wherein two end points are hinged in two speed that " induction " go out, another one end points is fixed, the distance of the remaining relative fixed endpoint of that end points is exactly △ v, then on this end points, adds a pen can draw acceleration diagram.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.
Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above example just understands method of the present invention and core concept thereof for helping.The above is only the preferred embodiment of the present invention, should be understood that, due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, under the premise without departing from the principles of the invention, some improvement, retouching or change can also be made, also above-mentioned technical characteristic can be combined by rights; These improve retouching, change or combination, or the design of invention and technical scheme are directly applied to other occasion without improving, and all should be considered as protection scope of the present invention.
Claims (10)
1. a cam follower motion analysis platform, it comprises the cam selector bar group mechanism being arranged on total pedestal upper end, the paper advance mechanism of lower end, and the gear train of side, is characterized in that,
Described total support comprise symmetrically arranged two pieces of outer baffles (1) and middle connect fixed bar (18), auxiliary rod (19), walk penholder (20);
Described paper advance mechanism comprises being horizontally set on walks Paper baseplate (2) between outer baffle (1); Described walk Paper baseplate (2) upper and lower surface be provided with away reel (23) symmetrically, walk reel (23) is evenly provided with paper feed wheel (22); Described paper feed wheel (22) up and down symmetry is engaged in paper feed wheel bore (27);
Described gear train comprises the gear reduction box (9) being arranged on total frame bottom and being connected with motor (8); Described gear reduction box (9) is connected with cantilevered axle (10); Described cantilevered axle (10) is connected with camshaft (14) by bevel gear transmission (13); Described camshaft (14) is evenly provided with vertically three cams (15); Described cantilevered axle (10) by synchronous pulley mechanism (12) with walk reel (23) and be connected;
Described cam selector bar group mechanism comprises the expansion link (16) be arranged between two pieces of outer baffles (1); Described expansion link (16) is hinged with fork (21); Described fork is interconnected to X-shaped shape by articulated manner between (21), and the pin joint between described fork (21) is slidably connected with fixed bar (17), motion bar (18) respectively by linear bearing; Described expansion link (16) one end is against on corresponding cam (15) excircle respectively, is provided with back-moving spring (25) between the other end and outer baffle (1); Describedly walk penholder (20) is connected with the pen cap (24) by linear bearing; The described pen cap (24) is hinged with fork (21); The described pen cap is provided with ruling pen in (24).
2. a kind of cam follower motion analysis platform as claimed in claim 1, is characterized in that, described side outer baffle (1) inner side is provided with deceleration boxboard (3); Described deceleration boxboard (3) four angles connect and compose reducer casing installing space by connecting link (5) and side outer baffle (1); Described gear reduction box (9) is arranged in reducer casing installing space; Motor fixing plate (4) is provided with between described deceleration boxboard (3) and opposite side outer baffle (1); Described motor fixing plate (4) is provided with motor (8).
3. a kind of cam follower motion analysis platform as claimed in claim 1, is characterized in that, described in walk reel (23) two ends and be fixed on outer baffle (1) by ball bearing.
4. a kind of cam follower motion analysis platform as claimed in claim 1, is characterized in that, described expansion link (16) two ends are fixed on outer baffle (1) by linear bearing.
5. a kind of cam follower motion analysis platform as claimed in claim 1, is characterized in that, three described cams (15) all with camshaft (14) for the center of circle, in the same direction rotate depart from certain angle; Between described cam (15), deviation angle is identical.
6. a kind of cam follower motion analysis platform as claimed in claim 1, is characterized in that, described cantilevered axle (10) is fixed by fixed mount (6); Described camshaft (14) is fixed hanging deck (7) by upper and lower two panels and is fixed; Described fixing hanging deck (7), fixed mount (6) are all arranged on outer baffle-plate (1) outside.
7. a kind of cam follower motion analysis platform as claimed in claim 1, is characterized in that, described outer baffle (1) is provided with the strip waist-shaped hole (26) of horizontal direction; Described motion bar (17) two ends are in waist-shaped hole (26).
8. a kind of cam follower motion analysis platform as claimed in claim 1, is characterized in that, the described pen cap (24) comprises the pen cap one (41), the pen cap two (42), the pen cap three (43); Described expansion link (16) comprises expansion link one (61), expansion link two (62), expansion link three (63); Described fork (21) comprises fork one (31), fork two (32), fork three (33), fork four (34), fork five (35), fork six (36), fork seven (37), fork eight (38); Described fork one (31) end and fork two (32) middle-end, fork four (34) end are hinged on fixed bar (18) same point, middle-end and fork six (36) middle-end are hinged on motion bar (17) same point, front end and the pen cap one (41) hinged; Described fork two (32) front end and the pen cap two (42) hinged, end is hinged on fixed bar (18); Described fork three (33) front end and the pen cap three (43) hinged, rear end is hinged on fixed bar (18), and middle-end and fork four (34) front end are hinged on expansion link one (61) same point; Described fork four (34) middle-end and fork five (35) middle-end are hinged on motion bar (17) same point; Described fork five (35) front end and fork seven (37) front end are hinged on expansion link two (62) same point, and end is hinged on fixed bar (18); Described fork six (36) front end is hinged on auxiliary rod (19), and end and fork seven (37) end are hinged on fixed bar (18) same point; Described fork seven (37) middle-end and fork eight (38) are hinged on motion bar (17) same point; Described fork eight (38) front end is hinged on expansion link (63), and end is hinged on fixed bar (18).
9. a kind of cam follower motion analysis platform as claimed in claim 1, is characterized in that, one end that described expansion link (16) contacts with cam (15) excircle, and end is provided with miniature bearing (30).
10. a kind of cam follower motion analysis platform as claimed in claim 1, it is characterized in that, described outer baffle (1), deceleration boxboard (3), walk Paper baseplate (2), motor fixing plate (4) is organic glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510713486.8A CN105206170B (en) | 2015-10-28 | 2015-10-28 | A kind of cam follower motion analysis platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510713486.8A CN105206170B (en) | 2015-10-28 | 2015-10-28 | A kind of cam follower motion analysis platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107543403A (en) * | 2017-08-15 | 2018-01-05 | 贵州省正安县怡人茶业有限责任公司 | Tea drying device |
| CN111899627A (en) * | 2020-06-02 | 2020-11-06 | 浙大城市学院 | Multifunctional experimental teaching instrument of space cam mechanism |
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| CN104616580A (en) * | 2014-12-25 | 2015-05-13 | 北京理工大学 | Cam mechanism contour design and driven part motion characteristic mapping platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107543403A (en) * | 2017-08-15 | 2018-01-05 | 贵州省正安县怡人茶业有限责任公司 | Tea drying device |
| CN111899627A (en) * | 2020-06-02 | 2020-11-06 | 浙大城市学院 | Multifunctional experimental teaching instrument of space cam mechanism |
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| CN105206170B (en) | 2017-09-26 |
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