CN103943021B - A kind of gear centre is apart from separability validating instrument - Google Patents
A kind of gear centre is apart from separability validating instrument Download PDFInfo
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- CN103943021B CN103943021B CN201410154065.1A CN201410154065A CN103943021B CN 103943021 B CN103943021 B CN 103943021B CN 201410154065 A CN201410154065 A CN 201410154065A CN 103943021 B CN103943021 B CN 103943021B
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Abstract
The invention discloses a kind of gear centre apart from separability validating instrument, belong to demonstration teaching aid field.The present invention drives driving gear to rotate by driving gear slewing equipment, and driving gear is engaged transmission of torque to follower gear by flank profil; Detected the variation in angular displacement of driving gear and follower gear by detecting unit in real time, and shown by digital display device; By the synchronism that observation driving gear and follower gear angle of revolution change, determine the consistance of gear drive instantaneous transmission ratio; Changed the centre distance of driving gear and follower gear by center distance adjusting device, under different centre distance condition, carry out many experiments, can verify that gear centre is apart from separability.The present invention is that the classroom instruction of involute profile gear centre distance separability content provides a kind of novel demonstration teaching aid, to set forth with word and the theory teaching mode of the derivation of equation organically combines, make abstract uninteresting knowledge point obtain vivid displaying, effectively improve classroom teaching effect.
Description
Technical field
The present invention relates to a kind of demonstration teaching aid, more particularly, relate to a kind of gear centre apart from separability validating instrument.
Background technology
" mechanical principle " course is the key course of mechanical, near machine class specialty, and gear drive is mechanically operated important content.
Gear drive is realized by the flank profil of the flank profil promotion engaged wheel of the driving wheel gear teeth.The most basic requirement of gear drive be transmission accurately, steadily, namely require that instantaneous transmission ratio must remain unchanged, otherwise, when driving wheel turns round with constant angular velocity, driven crop rotation variable angular velocity rotates, the inertial force produced not only affects the life-span of gear, and can cause vibration and the noise of machine, affects operating accuracy.
As shown in Fig. 1 flank profil engagement philosophy schematic diagram, by formula
known, the ratio of gear of involute urve depends on the size of two-wheeled base radius, because basic circle size is certain, even if so make two-wheeled operating center distance O in an installation
1o
2' with designed centre distance O
1o
2have deviation, also can not affect the ratio of gear of two-wheeled, this characteristic of involute urve transmission is called centre distance separability, and this character is all very favourable for the process and assemble of involute gear in production reality, is knowledge point important in course.
At present, at classroom teaching, the explanation about the meshing characteristic of involute profile centre distance separability adopts the mode of language elaboration and the derivation of equation usually, and student understands comparatively abstract.If classroom teaching, language set forth and the derivation of equation basis on, increase the dramatic experimental demonstration of corresponding experiment teaching aid, effectively can improve classroom teaching effect.
Summary of the invention
1. invent the technical matters that will solve
The object of the invention is to overcome existing gear centre is difficult to visual experiment demonstration deficiency apart from separability feature, there is provided a kind of gear centre apart from separability validating instrument, adopt technical scheme of the present invention, for the classroom instruction of " mechanical principle " course middle gear engaged transmission involute profile gear centre distance separability content provides a kind of novel demonstration teaching aid, to set forth and the theory teaching mode of the derivation of equation organically combines with employing word, make abstract uninteresting knowledge point obtain vivid displaying, effectively improve classroom teaching effect; Be mainly used in verifying that the gear centre of involute profile is apart from separability feature.
2. technical scheme
For achieving the above object, technical scheme provided by the invention is:
A kind of gear centre of the present invention is apart from separability validating instrument, comprise frame, also comprise driving gear slewing equipment, follower gear back pressure apparatus, center distance adjusting device, driving gear, follower gear, detecting unit and digital display device, described driving gear slewing equipment is fixed in frame, and be connected with driving gear shaft, for realizing the circumgyration campaign of driving gear, and drive follower gear gyration together; Described follower gear back pressure apparatus is connected with center distance adjusting device by linear guides pair, and is connected with driven gear shaft, for realizing the zero-clearance transmission of follower gear and driving gear; Described center distance adjusting device is fixed in frame, regulates for the centre distance realizing driving gear and follower gear; Described detecting unit is installed on driving gear slewing equipment, follower gear back pressure apparatus and center distance adjusting device respectively, and the angle of revolution for Real-time Collection three changes, thus draws the rotating speed of driving gear and follower gear and the regulated quantity of centre distance; Described digital display device is connected with detecting unit, for showing the real time data that detecting unit gathers.
Further, described driving gear slewing equipment comprises rotary gear box, driving gear shaft and rotary motion mechanism, described rotary gear box is worm gear, described rotary motion mechanism comprises transmission shaft, fixed support and turnstile, described rotary gear box is fixedly installed in frame, described driving gear shaft through the revolution worm gear in rotary gear box, and is connected mutually with driving gear; One end of described transmission shaft is connected with the revolution worm screw in rotary gear box, and the other end is connected with turnstile, and described transmission shaft is fixed in frame by fixed support.
Further, described center distance adjusting device comprises adjustment reducer casing, output shaft, ball-screw pair of nut, movable plate and linear guides pair, described adjustment reducer casing is worm gear, described ball-screw pair of nut comprises leading screw, ball nut and nut seat, described linear guides pair comprises rolling slide block, cylindrical guide and rail brackets, described adjustment reducer casing is fixedly installed in frame, described output shaft is through the adjustment worm gear regulated in reducer casing, and be connected mutually with leading screw, adjustment worm screw in described adjustment reducer casing is connected mutually with control hand wheel, described leading screw matches with ball nut, and described ball nut is connected mutually by nut seat and movable plate, described rolling slide block is fixedly installed on movable plate, and described cylindrical guide matches with rolling slide block, and is fixed in frame by rail brackets, described follower gear back pressure apparatus is fixedly installed on movable plate.
Further, described follower gear back pressure apparatus comprises driven gear shaft, follower shaft bearing, rotating disk, wire rope and counterweight, described follower shaft bearing is fixedly installed on movable plate, described rotating disk is installed in follower shaft bearing, described driven gear shaft through rotating disk, and is connected mutually with follower gear; The one ends wound of described wire rope is on rotating disk, and the other end passes follower shaft bearing and connects counterweight.
Further, described follower shaft bearing is also provided with guider screw, and described wire rope passes follower shaft bearing through guider screw.
Further, described detecting unit comprises the first scrambler, the second scrambler and the 3rd scrambler, and the first described scrambler is connected by shaft coupling with driving gear shaft; The second described scrambler is connected by shaft coupling with driven gear shaft; The 3rd described scrambler is connected by shaft coupling with output shaft.
Further, described digital display device is LED digital display meter, and it is fixedly installed in frame side, and is connected with the 3rd scrambler with the first scrambler, the second scrambler respectively.
Further, the modulus M of described driving gear and follower gear is 30mm.
Further, described frame comprises framework panel and framework pillar, and described driving gear and follower gear are all installed on the front of framework panel, for ocular demonstration; Described driving gear slewing equipment, follower gear back pressure apparatus and center distance adjusting device are all installed on the reverse side of framework panel; Described framework pillar supports framework panel.
3. beneficial effect
Adopt technical scheme provided by the invention, compared with existing known technology, there is following remarkable result:
(1) a kind of gear centre of the present invention is apart from separability validating instrument, and it drives driving gear to rotate by driving gear slewing equipment, and driving gear is engaged transmission of torque to follower gear by flank profil; Detected the variation in angular displacement of driving gear and follower gear by detecting unit in real time, and shown by digital display device, facilitate Real Time Observation; By the synchronism that observation driving gear and follower gear angle of revolution change, determine the consistance of gear drive instantaneous transmission ratio; Changed the centre distance of driving gear and follower gear by center distance adjusting device, under different centre distance condition, carry out many experiments, involute gear centre distance separability can be verified; For the classroom instruction of " mechanical principle " course middle gear engaged transmission involute profile gear centre distance separability content provides a kind of novel demonstration teaching aid, to set forth and the theory teaching mode of the derivation of equation organically combines with employing word, make abstract uninteresting knowledge point obtain vivid displaying, effectively improve classroom teaching effect;
(2) a kind of gear centre of the present invention is apart from separability validating instrument, and its rotary gear box is fixedly installed in frame, and driving gear shaft through the revolution worm gear in rotary gear box, and is connected mutually with driving gear; One end of transmission shaft is connected with the revolution worm screw in rotary gear box, the other end is connected with turnstile, transmission shaft is fixed in frame by fixed support, utilize above-mentioned driving gear slewing equipment, the slow smooth rotation of driving gear can be realized, and driving follower gear to rotate together, structure is simple, easy to operate;
(3) a kind of gear centre of the present invention is apart from separability validating instrument, and it regulates reducer casing to be fixedly installed in frame, and output shaft through the adjustment worm gear regulated in reducer casing, and is connected mutually with leading screw, regulates the adjustment worm screw in reducer casing to be connected mutually with control hand wheel; Leading screw matches with ball nut, and ball nut is connected mutually by nut seat and movable plate; Rolling slide block is fixedly installed on movable plate, and cylindrical guide matches with rolling slide block, and is fixed in frame by rail brackets; Follower gear back pressure apparatus is fixedly installed on movable plate, utilizes above-mentioned center distance adjusting device, can realize the change in location of the follower gear centre of gyration, thus realizes the adjustment of driving gear and follower gear centre distance, and adjustment movement is steady, and transmission accuracy is high;
(4) a kind of gear centre of the present invention is apart from separability validating instrument, and its follower shaft bearing is fixedly installed on movable plate, and rotating disk is installed in follower shaft bearing, and driven gear shaft through rotating disk, and is connected mutually with follower gear; The one ends wound of wire rope is on rotating disk, the other end passes follower shaft bearing and connects counterweight, above-mentioned follower gear back pressure apparatus is utilized to apply certain torque to follower gear, make driving gear and the tight zero-clearance laminating of follower gear flank profil, realize steadily slowly transmission, be convenient to observe the synchronism that driving gear and follower gear angle of revolution change;
(5) a kind of gear centre of the present invention is apart from separability validating instrument, its first scrambler is connected by shaft coupling with driving gear shaft, second scrambler is connected by shaft coupling with driven gear shaft, 3rd scrambler is connected by shaft coupling with output shaft, realize detecting in real time driving gear and the rotating speed of follower gear and the regulated quantity of centre distance, the volume of scrambler be little, precision is high, long service life, cheap;
(6) a kind of gear centre of the present invention is apart from separability validating instrument, digital display device is LED digital display meter, it is fixedly installed in frame side, and be connected with the 3rd scrambler with the first scrambler, the second scrambler respectively, be convenient to the observation and comparison carrying out experimental data, reflect that driving gear and follower gear instantaneous angular velocity change vividly;
(7) a kind of gear centre of the present invention is apart from separability validating instrument, and the modulus M of its driving gear and follower gear is 30mm, is convenient to demonstration and observes.
Accompanying drawing explanation
Fig. 1 is involute gear tooth profile engagement philosophy schematic diagram;
Fig. 2 is the main TV structure schematic diagram of a kind of gear centre of the present invention apart from separability validating instrument;
Fig. 3 is the plan structure schematic diagram of a kind of gear centre of the present invention apart from separability validating instrument;
Fig. 4 is the A-A direction sectional structure schematic diagram in Fig. 3;
Fig. 5 is the B-B direction sectional structure schematic diagram in Fig. 3;
Fig. 6 is the C-C direction sectional structure schematic diagram in Fig. 3;
Fig. 7 is the D-D direction sectional structure schematic diagram in Fig. 3;
Fig. 8 is that E in Fig. 3 is to structural representation;
Fig. 9 is that F in Fig. 8 is to structural representation.
Label declaration in schematic diagram:
1, frame; 101, framework panel; 102, framework pillar; 2, driving gear slewing equipment; 21, rotary gear box; 211, rotory speed reducing box; 212, worm gear is turned round; 213, worm screw is turned round; 22, driving gear shaft; 23, rotary motion mechanism; 231, transmission shaft; 232, fixed support; 233, turnstile; 24, the first flange bracket; 25, the first scrambler location-plate; 3, follower gear back pressure apparatus; 31, driven gear shaft; 32, follower shaft bearing; 33, rotating disk; 34, guider screw; 35, wire rope; 36, counterweight; 37, the second flange bracket; 38, the second scrambler location-plate; 4, center distance adjusting device; 41, reducer casing is regulated; 411, deceleration box is regulated; 412, worm gear is regulated; 413, worm screw is regulated; 414, control hand wheel; 42, output shaft; 43, leading screw; 44, ball nut; 45, nut seat; 46, movable plate; 47, three-flange support; 48, rolling slide block; 49, cylindrical guide; 491, rail brackets; 5, digital display device; 61, the first scrambler; 62, the second scrambler; 63, the 3rd scrambler; 7, driving gear; 8, follower gear.
Embodiment
For understanding content of the present invention further, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment
Composition graphs 2 and Fig. 3, a kind of gear centre of the present embodiment is apart from separability validating instrument, comprise frame 1, driving gear slewing equipment 2, follower gear back pressure apparatus 3, center distance adjusting device 4, driving gear 7, follower gear 8, detecting unit and digital display device 5, driving gear slewing equipment 2 is fixed in frame 1, and be connected with driving gear 7 axle, for realizing the circumgyration campaign of driving gear 7, and drive follower gear 8 gyration together; Follower gear back pressure apparatus 3 is connected with center distance adjusting device 4 by linear guides pair, and is connected with follower gear 8 axle, for realizing the zero-clearance transmission of follower gear 8 and driving gear 7; Center distance adjusting device 4 is fixed in frame 1, regulates with the centre distance of follower gear 8 for realizing driving gear 7; Detecting unit is installed on driving gear slewing equipment 2, follower gear back pressure apparatus 3 and center distance adjusting device 4 respectively, and the angle of revolution for Real-time Collection three changes, thus draws driving gear 7 and the rotating speed of follower gear 8 and the regulated quantity of centre distance; Digital display device 5 is connected with detecting unit, for showing the real time data that detecting unit gathers.A kind of gear centre of the present embodiment, apart from separability validating instrument, drives driving gear 7 to rotate by driving gear slewing equipment 2, and driving gear 7 is engaged transmission of torque to follower gear 8 by flank profil; Detected the variation in angular displacement of driving gear 7 and follower gear 8 by detecting unit in real time, and shown by digital display device 5, facilitate Real Time Observation; By observing the synchronism that driving gear 7 and follower gear 8 angle of revolution change, determine the consistance of gear drive instantaneous transmission ratio; Change driving gear 7 and the centre distance of follower gear 8 by center distance adjusting device 4, under different centre distance condition, carry out many experiments, involute gear centre distance separability can be verified; For the classroom instruction of " mechanical principle " course middle gear engaged transmission involute profile centre distance separability content provides a kind of novel demonstration teaching aid, to set forth and the theory teaching mode of the derivation of equation organically combines with employing word, make abstract uninteresting knowledge point obtain vivid displaying, effectively improve classroom teaching effect; Simultaneously, driving gear 7 and follower gear 8 are changed into the gear of circular arc, cycloid or abnormal cycloidal profile, namely can be used for the checking of gear centre apart from separability feature of circular arc, cycloid and abnormal cycloidal profile, fill up a large blank of " mechanical principle " course teaching instrument.
As shown in Figure 4, driving gear slewing equipment 2 comprises rotary gear box 21, driving gear shaft 22 and rotary motion mechanism 23, rotary gear box 21 is worm gear, it comprises rotory speed reducing box 211, revolution worm gear 212 and revolution worm screw 213, revolution worm gear 212 and revolution worm screw 213 closely engage, and are installed in rotory speed reducing box 211 by bearing; Rotary motion mechanism 23 comprises transmission shaft 231, fixed support 232 and turnstile 233.Rotary gear box 21 is fixedly installed in frame 1 by screw, driving gear shaft 22 is connected by flat key through revolution worm gear 212, and be connected mutually with driving gear 7, particularly, the axle center of driving gear 7 offers Φ 18 through hole for locating, driving gear shaft 22 matches with this through hole, and is fixed by the screw of 6 M6, ensure that the right alignment of driving gear 7 and driving gear shaft 22, and be convenient to the replacing of driving gear 7; One end of transmission shaft 231 is connected by shaft coupling with revolution worm screw 213, the other end is connected with turnstile 233, transmission shaft 231 is fixed in frame 1 by fixed support 232, avoids because transmission shaft 231 is long, occurs large-amplitude sloshing phenomenon when rotating turnstile 233.Utilize the driving gear slewing equipment 2 of said structure, can realize driving gear 7 slowly smooth rotation, and drive follower gear 8 to rotate together, structure is simple, easy to operate.
See Fig. 6, Fig. 7, Fig. 8 and Fig. 9, it is secondary that center distance adjusting device 4 comprises adjustment reducer casing 41, output shaft 42, ball-screw pair of nut, movable plate 46 and linear guides, reducer casing 41 is regulated to be worm gear, it comprises adjustment deceleration box 411, regulates worm gear 412 and regulate worm screw 413, regulate worm gear 412 and regulate worm screw 413 closely to engage, and be installed in adjustment deceleration box 411 by bearing; Ball-screw pair of nut comprises leading screw 43, ball nut 44 and nut seat 45; Linear guides pair comprises rolling slide block 48, cylindrical guide 49 and rail brackets 491.Reducer casing 41 is regulated to be fixedly installed in frame 1 by screw, output shaft 42 is connected by flat key through regulating worm gear 412, and be connected mutually by shaft coupling with leading screw 43, regulate worm screw 413 to be connected (regulate reducer casing 41 and control hand wheel 414 shown in Figure 2) mutually with control hand wheel 414; Leading screw 43 matches with ball nut 44, and ball nut 44 is connected mutually by nut seat 45 and movable plate 46.As shown in Figure 7 and Figure 8, the both sides of movable plate 46 are by screw fixed installation rolling slide block 48, and cylindrical guide 49 matches with rolling slide block 48, and is fixed in frame 1 by rail brackets 491.As shown in Figure 9, the rail brackets 491 in the present embodiment is installed in frame 1 by screw, and cylindrical guide 49 is fixed on rail brackets 491 by lock-screw.Follower gear back pressure apparatus 3 is fixedly installed on movable plate 46, on the relevant position of movable plate 46, frame 1 offers the space providing movable plate 46 to move.Utilize the center distance adjusting device 4 of said structure, can realize the change in location of follower gear 8 centre of gyration, thus realize the adjustment of driving gear 7 and follower gear 8 centre distance, adjustment movement is steady, and transmission accuracy is high.
As shown in Figure 5, follower gear back pressure apparatus 3 comprises driven gear shaft 31, follower shaft bearing 32, rotating disk 33, wire rope 35 and counterweight 36, follower shaft bearing 32 is fixedly installed on movable plate 46 by screw, rotating disk 33 is installed in follower shaft bearing 32 by bearing, driven gear shaft 31 is connected by flat key through rotating disk 33, and be connected mutually with follower gear 8, with driving gear shaft 22, the fixed form of driving gear 7 is identical, the axle center of follower gear 8 also offers Φ 18 through hole for locating, driven gear shaft 31 matches with this through hole, and fixed by the screw of 6 M6, ensure that the right alignment of follower gear 8 and driven gear shaft 31, and be convenient to the replacing of follower gear 8, the one ends wound of wire rope 35 is on rotating disk 33, and the other end passes follower shaft bearing 32 and connects counterweight 36, specifically in follower shaft bearing 32, is provided with guider screw 34, and wire rope 35 passes follower shaft bearing 32 after guider screw 34.Rotating disk 33 torque is provided by the deadweight of counterweight 36, follower gear 8 is passed to by driven gear shaft 31, make driving gear 7 and the tight zero-clearance laminating of follower gear 8 flank profil, realize steadily slowly transmission, be convenient to the synchronism that observation driving gear 7 changes with follower gear 8 angle of revolution.
Detecting unit comprises the first scrambler 61, second scrambler 62 and the 3rd scrambler 63(scrambler also can be called angular displacement sensor), first scrambler 61 is connected by spring coupling with driving gear shaft 22, specifically as shown in Figure 4, first scrambler 61 is installed on the below of driving gear shaft 22, for detecting the intermittent angle displacement of driving gear 7, wherein, the first flange bracket 24 is mounted by means of screws with in the below of rotory speed reducing box 211, the first scrambler location-plate 25 is installed with in the below of the first flange bracket 24, first scrambler 61 is fixed on the first scrambler location-plate 25 by screw.Second scrambler 62 is connected by spring coupling with driven gear shaft 31, specifically as shown in Figure 5, second scrambler 62 is installed on the below of driven gear shaft 31, for detecting the intermittent angle displacement of follower gear 8, wherein, by screw, the second flange bracket 37 is installed in the below of follower shaft bearing 32, is installed with the second scrambler location-plate 38, second scrambler 62 in the below of the second flange bracket 37 and is fixed on the second scrambler location-plate 38 by screw.3rd scrambler 63 is connected by spring coupling with output shaft 42, specifically as shown in Figure 6,3rd scrambler 63 is installed on the left side regulating deceleration box 411, for detecting the rotational displacement of output shaft 42, by the proportionate relationship with leading screw pitch, derive the move distance of movable plate 46, wherein, regulating the left end of deceleration box 411 to be provided with three-flange support 47 by screw, the 3rd scrambler 63 is fixed on three-flange support 47 by screw.The volume of the first scrambler 61, second scrambler 62 and the 3rd scrambler 63 is little, precision is high, long service life, cheap.
Digital display device 5 in the present embodiment is LED digital display meter, it is fixedly installed in frame 1 side, and be connected with the 3rd scrambler 63 with the first scrambler 61, second scrambler 62 respectively, for showing the angle of revolution change of driving gear 7 and follower gear 8 in real time, and the operating center distance of driving gear 7 and follower gear 8, be convenient to the observation and comparison carrying out experimental data, reflect that driving gear 7 and follower gear 8 instantaneous angular velocity change vividly.In addition, for the ease of demonstration and observation, the driving gear 7 in the present embodiment is incomplete involute gear (fan-shaped) with follower gear 8, and profile of tooth is the involute profile of standard, and driving gear 7 is 30mm with the modulus M of follower gear 8.Frame 1 comprises framework panel 101 and framework pillar 102, and driving gear 7 and follower gear 8 are all installed on the front of framework panel 101, for ocular demonstration; Driving gear slewing equipment 2, follower gear back pressure apparatus 3 and center distance adjusting device 4 are all installed on the reverse side of framework panel 101; Framework pillar 102 supports framework panel 101.
In order to understand content of the present invention better, the existing experiment course of action providing a kind of gear centre distance separability validating instrument of the present invention by reference to the accompanying drawings:
First, by center distance adjusting device 4, the centre distance of driving gear 7 and follower gear 8 is adjusted to theory calculate centre distance position, i.e. reference center distance; Rotate turnstile 233, gyration outputs to driving gear shaft 22 after the deceleration of rotary gear box 21, thus drives driving gear 7 to rotate, and driving gear 7 drives and turns round together with the follower gear 8 of its engagement simultaneously; Rely on counterweight 36 Action of Gravity Field in follower gear back pressure apparatus 3, give the torque of rotating disk 33 1 quota all the time, this torque passes to follower gear 8 by driven gear shaft 31, guarantees that the flank profil of driving gear 7 and follower gear 8 fits tightly, realizes zero-clearance transmission; The speed of gyration of driving gear 7 and follower gear 8 is presented on LED digital display meter by detecting unit respectively in real time, the synchronism of the driving gear 7 that observation and comparison LED digital display meter detects in real time and the change of follower gear 8 angle of revolution, determines the consistance of gear drive instantaneous transmission ratio; The heart is under condition in a standard, and the angle of revolution change of driving gear 7 and follower gear 8 is synchronous, and gear drive instantaneous transmission ratio is consistent.
Then, by center distance adjusting device 4 centre distance of driving gear 7 and follower gear 8 is adjusted to and is greater than theory calculate centre distance position, depart from the condition of standard value in centre distance under, repeat aforesaid operations, the synchronism of the driving gear 7 that observation and comparison digital display meter detects in real time and the variation of follower gear 8 angle of revolution, the consistance of gear drive instantaneous transmission ratio is determined: if the angle of revolution variation of driving gear 7 and follower gear 8 is synchronous with this, gear drive instantaneous transmission ratio is consistent, just can judge that the gear drive of this flank profil has centre distance separability, if the angle of revolution variation of driving gear 7 and follower gear 8 is asynchronous, illustrates that gear drive instantaneous transmission ratio is inconsistent, just can judge that the gear drive of this flank profil does not have centre distance separability.
A kind of gear centre of the present invention is apart from separability validating instrument, for the classroom instruction of " mechanical principle " course middle gear engaged transmission involute profile centre distance separability content provides a kind of novel demonstration teaching aid, to set forth and the theory teaching mode of the derivation of equation organically combines with employing word, make abstract uninteresting knowledge point obtain vivid displaying, effectively improve classroom teaching effect; Be mainly used in verifying that the gear centre of involute profile is apart from separability feature.
Below be schematically described the present invention and embodiment thereof, this description does not have restricted, and shown in accompanying drawing is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, without creatively designing the frame mode similar to this technical scheme and embodiment, all should protection scope of the present invention be belonged to.
Claims (9)
1. a gear centre is apart from separability validating instrument, comprise frame (1), it is characterized in that: also comprise driving gear slewing equipment (2), follower gear back pressure apparatus (3), center distance adjusting device (4), driving gear (7), follower gear (8), detecting unit and digital display device (5), described driving gear slewing equipment (2) is fixed in frame (1), and be connected with driving gear (7) axle, for realizing the circumgyration campaign of driving gear (7), and drive follower gear (8) gyration together; Described follower gear back pressure apparatus (3) is connected with center distance adjusting device (4) by linear guides pair, and is connected with follower gear (8) axle, for realizing the zero-clearance transmission of follower gear (8) and driving gear (7); Described center distance adjusting device (4) is fixed in frame (1), regulates with the centre distance of follower gear (8) for realizing driving gear (7); Described detecting unit is installed on driving gear slewing equipment (2), follower gear back pressure apparatus (3) and center distance adjusting device (4) respectively, angle of revolution for Real-time Collection three changes, thus draws driving gear (7) and the rotating speed of follower gear (8) and the regulated quantity of centre distance; Described digital display device (5) is connected with detecting unit, for showing the real time data that detecting unit gathers.
2. a kind of gear centre according to claim 1 is apart from separability validating instrument, it is characterized in that: described driving gear slewing equipment (2) comprises rotary gear box (21), driving gear shaft (22) and rotary motion mechanism (23), described rotary gear box (21) is worm gear, described rotary motion mechanism (23) comprises transmission shaft (231), fixed support (232) and turnstile (233), described rotary gear box (21) is fixedly installed in frame (1), described driving gear shaft (22) is through the revolution worm gear (212) in rotary gear box (21), and be connected mutually with driving gear (7), one end of described transmission shaft (231) is connected with the revolution worm screw (213) in rotary gear box (21), and the other end is connected with turnstile (233), and described transmission shaft (231) is fixed in frame (1) by fixed support (232).
3. a kind of gear centre according to claim 2 is apart from separability validating instrument, it is characterized in that: described center distance adjusting device (4) comprises adjustment reducer casing (41), output shaft (42), ball-screw pair of nut, movable plate (46) and linear guides pair, described adjustment reducer casing (41) is worm gear, described ball-screw pair of nut comprises leading screw (43), ball nut (44) and nut seat (45), described linear guides pair comprises rolling slide block (48), cylindrical guide (49) and rail brackets (491), described adjustment reducer casing (41) is fixedly installed in frame (1), described output shaft (42) is through the adjustment worm gear (412) regulated in reducer casing (41), and be connected mutually with leading screw (43), adjustment worm screw (413) in described adjustment reducer casing (41) is connected mutually with control hand wheel (414), described leading screw (43) matches with ball nut (44), and described ball nut (44) is connected mutually by nut seat (45) and movable plate (46), described rolling slide block (48) is fixedly installed on movable plate (46), and described cylindrical guide (49) matches with rolling slide block (48), and is fixed in frame (1) by rail brackets (491), described follower gear back pressure apparatus (3) is fixedly installed on movable plate (46).
4. a kind of gear centre according to claim 3 is apart from separability validating instrument, it is characterized in that: described follower gear back pressure apparatus (3) comprises driven gear shaft (31), follower shaft bearing (32), rotating disk (33), wire rope (35) and counterweight (36), described follower shaft bearing (32) is fixedly installed on movable plate (46), described rotating disk (33) is installed in follower shaft bearing (32), described driven gear shaft (31) through rotating disk (33), and is connected mutually with follower gear (8); The one ends wound of described wire rope (35) is on rotating disk (33), and the other end passes follower shaft bearing (32) and connects counterweight (36).
5. a kind of gear centre according to claim 4 is apart from separability validating instrument, it is characterized in that: described follower shaft bearing (32) is also provided with guider screw (34), described wire rope (35) passes follower shaft bearing (32) through guider screw (34).
6. a kind of gear centre according to claim 4 or 5 is apart from separability validating instrument, it is characterized in that: described detecting unit comprises the first scrambler (61), the second scrambler (62) and the 3rd scrambler (63), and described the first scrambler (61) is connected by shaft coupling with driving gear shaft (22); Described the second scrambler (62) is connected by shaft coupling with driven gear shaft (31); The 3rd described scrambler (63) is connected by shaft coupling with output shaft (42).
7. a kind of gear centre according to claim 6 is apart from separability validating instrument, it is characterized in that: described digital display device (5) is LED digital display meter, it is fixedly installed in frame (1) side, and is connected with the 3rd scrambler (63) with the first scrambler (61), the second scrambler (62) respectively.
8. a kind of gear centre according to claim 7 is apart from separability validating instrument, it is characterized in that: described driving gear (7) is 30mm with the modulus M of follower gear (8).
9. a kind of gear centre according to claim 8 is apart from separability validating instrument, it is characterized in that: described frame (1) comprises framework panel (101) and framework pillar (102), described driving gear (7) and follower gear (8) are all installed on the front of framework panel (101), for ocular demonstration; Described driving gear slewing equipment (2), follower gear back pressure apparatus (3) and center distance adjusting device (4) are all installed on the reverse side of framework panel (101); Described framework pillar (102) supports framework panel (101).
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| CN201410154065.1A CN103943021B (en) | 2014-04-16 | 2014-04-16 | A kind of gear centre is apart from separability validating instrument |
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| CN102194362B (en) * | 2011-05-17 | 2013-07-17 | 湖南长庆机电科教有限公司 | Gear shaping machine tool for teaching |
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