CN104999834B - A kind of function curve drawing instrument for classroom instruction - Google Patents
A kind of function curve drawing instrument for classroom instruction Download PDFInfo
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- CN104999834B CN104999834B CN201510482230.0A CN201510482230A CN104999834B CN 104999834 B CN104999834 B CN 104999834B CN 201510482230 A CN201510482230 A CN 201510482230A CN 104999834 B CN104999834 B CN 104999834B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L11/00—Non-circular-curve-drawing instruments
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Abstract
The invention discloses a kind of function curve drawing instrument for classroom instruction, including main frame, base, rocking bar, put pen device, amplitude modulation apparatus, frequency modulation device, object stage, slideway and slide plate.Manually shake rocking bar when the present invention works, transfer power to frequency modulation device by axle, change gear ratio by frequency modulation device, power is delivered on object stage and amplitude modulation apparatus respectively by axle, gear, bevel gear.Gear on object stage transfers power on the tooth bar under slide plate, it is achieved the lateral displacement along tooth bar direction of paintbrush.Amplitude modulation apparatus transfers power to put on pen device according to crank block principle, it is achieved the longitudinal oscillation along vertical tooth rack direction of paintbrush.Owing to the present invention adopts slider-crank mechanism, when the swing realizing pen, change crank length, the amplitude that pen swings can be changed, be the amplitude of function.Change the gear ratio between two displacements by frequency modulation device, the speed that pen swings back and forth can be changed, it is achieved the adjustment of function frequency.
Description
Technical field
The present invention relates to classroom instruction teaching aid, especially a kind of sine and cosine function curve drawing instrument for classroom instruction utilizing theory of mechanics.
Background technology
At present when middle senior middle school learning physics ripple and sine and cosine function, relatively abstract hard to understand.Teacher, in teaching, can only adopt trace-point method to solve image, and the mode only by Freehandhand-drawing is mapped, and not only degree of accuracy is low, and produces certain obstacle for being formed of Students ' Learning curve.In technology today, can directly not make the instrument of sine and cosine functional image, more can not the frequency of adjustment function image easily and effectively and amplitude.For the calculating of the joining of curve, frequency, amplitude calculating, classmates can not well grasp.
Summary of the invention
For solving the problems referred to above that prior art exists, the present invention to design a kind of function curve drawing instrument for classroom instruction that can accurately draw sine, cosine function curve, and can facilitate the amplitude of adjustment sine and cosine function curve freely and the size of frequency.Allow classmates can be clearly seen that the forming process of sine and cosine function.
To achieve these goals, technical scheme is as follows: a kind of function curve drawing instrument for classroom instruction, including main frame, base, support and slideway, also include upper bracket, slide bar, slide plate, slide block, gear, connecting rod, rocking bar, frequency modulation case, the axis of cone, roller, fixing axle, adjusting nut, set screw, tooth bar and axle；
Described base includes base A, base B, base C and base D, is separately fixed on four angles below main frame, is used for supporting main frame；
Described support includes support A, support B, support C, support D, support E, support F, support G, support H, support I, support J, support K and support L；Described support is installed in the lower section of main frame；
Described slide plate is arranged on the top of main frame, two tooth bar A being parallel to each other and tooth bar B it are fixed with below slide plate, and the lower edges parallel of tooth bar A and slide plate, tooth bar A is meshed with the gear D being fixed on below main frame and gear G, tooth bar B is meshed with the gear C being fixed on below main frame and gear F, gear C is in line vertical with tooth bar A with gear D, and gear C is consistent with the spacing of tooth bar A and tooth bar B with the spacing of gear D.Gear G and gear F is in line vertical with tooth bar A, and gear G is consistent with the spacing of tooth bar A and tooth bar B with the spacing of gear F.
Described upper bracket includes 2 upper bracket A and 2 upper bracket B, 2 described upper bracket A are fixed on the upper left side above main frame, outside slide plate, 2 described upper bracket B are fixed on the upper right side above main frame, outside slide plate, are provided with and 2 slide bar B by interference fit between 2 upper bracket A and 2 upper bracket B；In 2 described slide bar B are parallel to each other and its centrage is generally aligned in the same plane, the centrage of 2 described slide bar B is parallel with the lower edges of slide plate；Article 2, slide bar B being sequentially installed with from left to right slide block A and slide block C, described slide block A and slide block C is connected also by 2 slide bar A, on 2 slide bar A, between 2 slide block A and slide block C, is equipped with slide block B；The left end of described slide block A is connected with connecting rod, and the other end of connecting rod is connected with set screw；Slide block B can be slided on 2 slide bar A, the center of slide block B has hole, the central axis of this hole is vertical with the upper surface of slide block B, and through slide block, for inserting paintbrush, having screwed aperture on slide block B side, the central axis of this threaded aperture is vertical with the side surface of slide block B, is used for being screwed into the fixing paintbrush of screw；Described upper bracket A, upper bracket B, slide bar A, slide bar B, slide block A, slide block B and slide block C, screw are constituted puts pen device.
Described set screw is connected with connecting rod, and the other end connects adjusting nut；Described adjusting nut is placed in slideway, and adjusting nut can slide in slideway but cannot take out in slideway；Described slideway is fixed in gear A, and gear A is fixed on support L by fixing axle, and gear A can around solid fixed-axis rotation；Described set screw, connecting rod, adjusting nut, slideway, gear A, fixing axle and support A constitute amplitude modulation apparatus.
Described frequency modulation case is fixed on the lower section of main frame, frequency modulation case there is two circular cavities, it is separately installed with axle A and axle F, one of them hole lays a small slide block with spring, the axle A through this hole is enable to move in parallel, make axle A translate a segment distance to away from axle F horizontal direction, and return under the action of the spring；The described axis of cone has 2, is axis of cone A and axis of cone B respectively, respectively on the reverse axle A being placed on frequency modulation case and axle F；Being provided with roller between described axis of cone A and axis of cone B, described roller is arranged on axle B, can rotate around axle B and can move along axle B, and described axle B two ends are separately fixed on support C and support D, and axis of cone A, axis of cone B fit tightly with roller simultaneously；Described frequency modulation case, axle A, axle B, axle F, axis of cone A, axis of cone B, roller, support C and support D constitute frequency modulation device；
Described rocking bar is fixed on the support E below main frame, and the other end is connected with the axle F on frequency modulation case；Tooth bar A and tooth bar B it is respectively fixed with below described slide plate, tooth bar A is meshed with gear G, gear G is fixed on by axle D on the support J below main frame and support K, gear E is meshed with gear G, and gear E is fixed between the support H below main frame and support I by axle E, and the left end of axle E is fixed with bevel gear A, bevel gear A is meshed with bevel gear B, bevel gear B is fixed on the axle F of frequency modulation case, support F below main frame and support G is equipped with gear C and gear D respectively, for balancing skateboard；Described slide plate, tooth bar A, tooth bar B, gear C, gear D, gear G, gear F, axle D, axle E, support H, support I, support J and support K constitute object stage；Described gear B is fixed on the left end of frequency modulation device axis A, and gear B is meshed with the gear H being fixed on support L, and gear H is meshed with the gear A in amplitude modulation apparatus.
The operation principle of the present invention is as follows: the rocking bar of the present invention is positioned at the edge of main frame, convenient shake.Manually shake rocking bar during work, transfer power to frequency modulation device by axle F, change gear ratio by frequency modulation device, power is delivered on object stage and amplitude modulation apparatus respectively by axle A, axle E, axle F, gear B, gear E, bevel gear A and bevel gear B.Gear G and gear F on object stage can transfer power on the tooth bar A under slide plate and tooth bar B via rack and pinion engagement transmission, it is achieved the lateral displacement along tooth bar A, tooth bar B direction of paintbrush.Amplitude modulation apparatus transfers power to put on pen device according to crank block principle, puts and pen device can be laid paintbrush, it is achieved the longitudinal oscillation along vertical tooth rack A, tooth bar B direction of paintbrush.
When the present invention works, A4 size sheets is put on object stage, paintbrush is clipped in and puts on pen device, and regulate position and the height of pen, tighten the size of screw, regulating frequency and amplitude, shake rocking bar, sine and cosine function curve can be made on paper.
Compared with prior art, the method have the advantages that
1, owing to present invention employs the relative motion between slider-crank mechanism and rack-and-pinion, it is achieved that pen is laterally moving simultaneously, it is possible to longitudinally swings back and forth, reduces the forming process of sine and cosine function completely.
2, owing to the present invention adopts slider-crank mechanism, when the swing realizing pen, change crank length, the amplitude that pen swings can be changed, be the amplitude of function.Change the gear ratio between two displacements by frequency modulation device, the speed that pen swings back and forth can be changed, it is achieved the adjustment of function frequency.
3, owing to the present invention adopts purely mechanic structure, doing manual work simple, material is cheap and easily-available, and structural volume is little, low cost of manufacture, has commercialization and marketization advantage, operates easy for installation.
Accompanying drawing explanation
The present invention has 5, accompanying drawing, wherein:
Fig. 1 is the axonometric drawing of the present invention.
Fig. 2 is the upward view of the present invention.
Fig. 3 is the left view of the present invention.
Fig. 4 is the slide plate upward view of the present invention.
Fig. 5 is the fundamental diagram of the present invention.
nullIn figure: 1、Main frame，2、Upper bracket A，3、Gear A，4、Slideway，5、Set screw，6、Connecting rod，7、Slide block A，8、Slide block B，9、Slide bar A，10、Slide block C，11、Slide bar B，12、Upper bracket B，13、Slide plate，14、Rocking bar，15、Base A，16、Support A，17、Gear B，18、Support B，19、Axle A，20、Frequency modulation case，21、Support C，22、Axle B，23、Axis of cone A，24、Roller，25、Axis of cone B，26、Support D，27、Base B，28、Support E，29、Base C，30、Support F，31、Gear C，32、Axle C，33、Gear D，34、Support G，35、Support H，36、Gear E，37、Support I，38、Axle D，39、Support J，40、Gear F，41、Base D，42、Gear G，43、Support K，44、Axle E，45、Bevel gear A，46、Axle F，47、Bevel gear B，48、Support L，49、Gear H，50、Adjusting nut，51、Fixing axle，52、Tooth bar A，53、Tooth bar B.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described through.As Figure 1-4, a kind of function curve drawing instrument for classroom instruction, including main frame 1, base, support and slideway 4, also include upper bracket, slide bar, slide plate 13, slide block, gear, connecting rod 6, rocking bar 14, frequency modulation case 20, the axis of cone, roller 24, fixing axle 51, adjusting nut 50, set screw 5, tooth bar and axle；
Described base includes base A15, base B27, base C29 and base D41, is separately fixed on four angles below main frame 1, is used for supporting main frame 1；
Described support includes support A16, support B18, support C21, support D26, support E28, support F30, support G34, support H35, support I37, support J39, support K43 and support L48；Described support is installed in the lower section of main frame 1；
Described slide plate 13 is arranged on the top of main frame 1, two tooth bar A52 being parallel to each other and tooth bar B53 it are fixed with below slide plate 13, and the lower edges parallel of tooth bar A52 and slide plate 13, tooth bar A52 is meshed with the gear D 33 being fixed on below main frame 1 and gear G42, tooth bar B53 is meshed with the gear C 31 being fixed on below main frame 1 and gear F40, gear C 31 is in line vertical with tooth bar A52 with gear D 33, and gear C 31 is consistent with the spacing of tooth bar A52 and tooth bar B53 with the spacing of gear D 33；Gear G42 and gear F40 is in line vertical with tooth bar A52, and gear G42 is consistent with the spacing of tooth bar A52 and tooth bar B53 with the spacing of gear F40；
Described upper bracket includes 2 upper bracket A2 and 2 upper bracket B12,2 described upper bracket A2 are fixed on the upper left side above main frame 1, outside slide plate 13,2 described upper bracket B12 are fixed on the upper right side above main frame 1, outside slide plate 13, are provided with and 2 slide bar B11 by interference fit between 2 upper bracket A2 and 2 upper bracket B12；In 2 described slide bar B11 are parallel to each other and its centrage is generally aligned in the same plane, the centrage of 2 described slide bar B11 is parallel with the lower edges of slide plate 13；Article 2, slide bar B11 being sequentially installed with from left to right slide block A7 and slide block C10, described slide block A7 and slide block C10 is connected also by 2 slide bar A9, on 2 slide bar A9, between 2 slide block A7 and slide block C10, is equipped with slide block B 8；The left end of described slide block A7 is connected with connecting rod 6, and the other end of connecting rod 6 is connected with set screw 5；Slide block B 8 can be slided on 2 slide bar A9, the center of slide block B 8 has hole, the central axis of this hole is vertical with the upper surface of slide block B 8, and through slide block, for inserting paintbrush, having screwed aperture on slide block B 8 side, the central axis of this threaded aperture is vertical with the side surface of slide block B 8, is used for being screwed into the fixing paintbrush of screw；Described upper bracket A2, upper bracket B12, slide bar A9, slide bar B11, slide block A7, slide block B 8 and slide block C10, screw are constituted puts pen device；
Described set screw 5 is connected with connecting rod 6, and the other end connects adjusting nut 50；Described adjusting nut 50 is placed in slideway 4, and adjusting nut 50 can slide in slideway 4 but cannot take out in slideway 4；Described slideway 4 is fixed in gear A 3, and gear A 3 is fixed on support L48 by fixing axle 51, and gear A 3 can rotate around fixing axle 51；Described set screw 5, connecting rod 6, adjusting nut 50, slideway 4, gear A 3, fixing axle 51 and support A16 constitute amplitude modulation apparatus；
Described frequency modulation case 20 is fixed on the lower section of main frame 1, frequency modulation case 20 there is two circular cavities, it is separately installed with axle A19 and axle F46, one of them hole lays a small slide block with spring, the axle A19 through this hole is enable to move in parallel, make axle A19 translate a segment distance to away from axle F46 horizontal direction, and return under the action of the spring；The described axis of cone has 2, is axis of cone A23 and axis of cone B25 respectively, respectively on the reverse axle A19 being placed on frequency modulation case 20 and axle F46；Roller 24 is installed between described axis of cone A23 and axis of cone B25, described roller 24 is arranged on axle B22, can rotate around axle B22 and can move along axle B22, described axle B22 two ends are separately fixed on support C21 and support D26, and axis of cone A23, axis of cone B25 fit tightly with roller 24 simultaneously；Described frequency modulation case 20, axle A19, axle B22, axle F46, axis of cone A23, axis of cone B25, roller 24, support C21 and support D26 constitute frequency modulation device；
Described rocking bar 14 is fixed on the support E28 below main frame 1, and the other end is connected with the axle F46 on frequency modulation case 20；Tooth bar A52 and tooth bar B53 it is respectively fixed with below described slide plate 13, tooth bar A52 is meshed with gear G42, gear G42 is fixed on by axle D38 on the support J39 below main frame 1 and support K43, gear E36 is meshed with gear G42, gear E36 is fixed between the support H35 below main frame 1 and support I37 by axle E44, the left end of axle E44 is fixed with bevel gear A45, bevel gear A45 is meshed with bevel gear B47, bevel gear B47 is fixed on the axle F46 of frequency modulation case 20, support F30 below main frame 1 and support G34 is equipped with gear C 31 and gear D 33 respectively, for balancing skateboard 13；Described slide plate 13, tooth bar A52, tooth bar B53, gear C 31, gear D 33, gear G42, gear F40, axle D38, axle E44, support H35, support I37, support J39 and support K43 constitute object stage；Described gear B 17 is fixed on the left end of frequency modulation device axis A19, and gear B 17 is meshed with the gear H49 being fixed on support L48, and gear H49 is meshed with the gear A 3 in amplitude modulation apparatus.
As it is shown in figure 5, the operation principle of the present invention is as follows: the rocking bar 14 of the present invention is positioned at the edge of main frame 1, convenient shake；Rocking bar 14 is manually shaken during work, frequency modulation device is transferred power to by axle F46, change gear ratio by frequency modulation device, power is delivered on object stage and amplitude modulation apparatus respectively by axle A19, axle E44, axle F46, gear B 17, gear E36, bevel gear A45 and bevel gear B47；Gear G42 and gear F40 on object stage can transfer power on the tooth bar A52 under slide plate 13 and tooth bar B53 via rack and pinion engagement transmission, it is achieved the lateral displacement along tooth bar A52, tooth bar B53 direction of paintbrush；Amplitude modulation apparatus transfers power to put on pen device according to crank block principle, puts and pen device can be laid paintbrush, it is achieved the longitudinal oscillation along vertical tooth rack A52, tooth bar B53 direction of paintbrush.
Claims (1)
1. the function curve drawing instrument for classroom instruction, it is characterized in that: include main frame (1), base, support and slideway (4), also include upper bracket, slide bar, slide plate (13), slide block, gear, connecting rod (6), rocking bar (14), frequency modulation case (20), the axis of cone, roller (24), fixing axle (51), adjusting nut (50), set screw (5), tooth bar and axle；
Described base includes base A (15), base B (27), base C (29) and base D (41), it is separately fixed on four angles of main frame (1) lower section, is used for supporting main frame (1)；
Described support includes support A (16), support B (18), support C (21), support D (26), support E (28), support F (30), support G (34), support H (35), support I (37), support J (39), support K (43) and support L (48)；Described support is installed in the lower section of main frame (1)；
Described slide plate (13) is arranged on the top of main frame (1), slide plate (13) lower section is fixed with two tooth bar A (52) being parallel to each other and tooth bar B (53), and the lower edges parallel of tooth bar A (52) and slide plate (13), tooth bar A (52) is meshed with the gear D (33) being fixed on main frame (1) lower section and gear G (42), tooth bar B (53) is meshed with the gear C (31) being fixed on main frame (1) lower section and gear F (40), gear C (31) and gear D (33) are in line vertical with tooth bar A (52), gear C (31) is consistent with the spacing of tooth bar A (52) and tooth bar B (53) with the spacing of gear D (33)；Gear G (42) and gear F (40) is in line vertical with tooth bar A (52), and the spacing of gear G (42) and gear F (40) is consistent with the spacing of tooth bar A (52) and tooth bar B (53)；
Described upper bracket includes 2 upper bracket A (2) and 2 upper bracket B (12), 2 described upper bracket A (2) are fixed on main frame (1) top, slide plate (13) upper left side outward, 2 described upper bracket B (12) are fixed on main frame (1) top, slide plate (13) upper right side outward, are provided with and 2 slide bar B (11) by interference fit between 2 upper bracket A (2) and 2 upper bracket B (12)；In 2 described slide bar B (11) are parallel to each other and its centrage is generally aligned in the same plane, the centrage of 2 described slide bar B (11) is parallel with the lower edges of slide plate (13)；Article 2, slide bar B (11) is sequentially installed with slide block A (7) and slide block C (10) from left to right, described slide block A (7) and slide block C (10) is connected also by 2 slide bar A (9), on 2 slide bar A (9), between 2 slide block A (7) and slide block C (10), it is equipped with slide block B (8)；The left end of described slide block A (7) is connected with connecting rod (6), and the other end of connecting rod (6) is connected with set screw (5)；Slide block B (8) can in the upper slip of 2 slide bar A (9), the center of slide block B (8) has hole, the central axis of this hole is vertical with the upper surface of slide block B (8), and through slide block, for inserting paintbrush, having screwed aperture on slide block B (8) side, the central axis of this threaded aperture is vertical with the side surface of slide block B (8), is used for being screwed into the fixing paintbrush of screw；Described upper bracket A (2), upper bracket B (12), slide bar A (9), slide bar B (11), slide block A (7), slide block B (8) and slide block C (10), screw are constituted puts pen device；
Described set screw (5) is connected with connecting rod (6), and the other end connects adjusting nut (50)；Described adjusting nut (50) is placed in slideway (4), and adjusting nut (50) can slide in slideway (4) but cannot take out in slideway (4)；Described slideway (4) is fixed in gear A (3), gear A (3) is fixed on support L (48) by fixing axle (51), and gear A (3) can rotate around fixing axle (51)；Described set screw (5), connecting rod (6), adjusting nut (50), slideway (4), gear A (3), fixing axle (51) and support A (16) composition amplitude modulation apparatus；
Described frequency modulation case (20) is fixed on the lower section of main frame (1), frequency modulation case has two circular cavities on (20), it is separately installed with axle A (19) and axle F (46), one of them hole lays a small slide block with spring, the axle A (19) through this hole is made to move in parallel, make axle A (19) translate a segment distance to away from axle F (46) horizontal direction, and return under the action of the spring；The described axis of cone has 2, is axis of cone A (23) and axis of cone B (25) respectively, respectively on the reverse axle A (19) being placed on frequency modulation case (20) and axle F (46)；Between described axis of cone A (23) and axis of cone B (25), roller (24) is installed, described roller (24) is arranged on axle B (22), can rotate around axle B (22) and can move along axle B (22), described axle B (22) two ends are separately fixed on support C (21) and support D (26), and axis of cone A (23), axis of cone B (25) fit tightly with roller (24) simultaneously；Described frequency modulation case (20), axle A (19), axle B (22), axle F (46), axis of cone A (23), axis of cone B (25), roller (24), support C (21) and support D (26) constitute frequency modulation device；
Described rocking bar (14) is fixed on the support E (28) of main frame (1) lower section, and the other end is connected with the axle F (46) on frequency modulation case (20)；nullDescribed slide plate (13) lower section is respectively fixed with tooth bar A (52) and tooth bar B (53)，Tooth bar A (52) and gear G (42) is meshed，Gear G (42) is fixed on the support J (39) and support K (43) of main frame (1) lower section by axle D (38)，Gear E (36) and gear G (42) is meshed，Gear E (36) is fixed between support H (35) and the support I (37) of main frame (1) lower section by axle E (44)，The left end of axle E (44) is fixed with bevel gear A (45)，Bevel gear A (45) and bevel gear B (47) is meshed，Bevel gear B (47) is fixed on the axle F (46) of frequency modulation case (20)，The support F (30) and support G (34) of main frame (1) lower section is equipped with gear C (31) and gear D (33) respectively，For balancing skateboard (13)；Described slide plate (13), tooth bar A (52), tooth bar B (53), gear C (31), gear D (33), gear G (42), gear F (40), axle D (38), axle E (44), support H (35), support I (37), support J (39) and support K (43) constitute object stage；Described gear B (17) is fixed on the left end of frequency modulation device axis A (19), gear B (17) is meshed with the gear H (49) being fixed on support L (48), and gear H (49) is meshed with the gear A (3) in amplitude modulation apparatus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510482230.0A CN104999834B (en) | 2015-08-07 | 2015-08-07 | A kind of function curve drawing instrument for classroom instruction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482230.0A CN104999834B (en) | 2015-08-07 | 2015-08-07 | A kind of function curve drawing instrument for classroom instruction |
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| CN104999834B true CN104999834B (en) | 2016-07-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2263008Y (en) * | 1996-07-09 | 1997-09-24 | 北京建筑工程学院 | Multipurpose drawing rule |
| CN2290482Y (en) * | 1997-06-24 | 1998-09-09 | 许幂 | Circular functions drawing device |
| CN2310680Y (en) * | 1997-09-29 | 1999-03-17 | 苏宗科 | Multifunctional drawing rule |
| CN103192633A (en) * | 2013-04-23 | 2013-07-10 | 宋建红 | Curve plotter for trigonometric functions |
| CN104361789B (en) * | 2014-11-25 | 2016-09-21 | 南京工业职业技术学院 | Trigonometric function all can be demonstrated and image rendering instrument |
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