CN203882468U - Hand-operated type multi-tooth-form drawing machine - Google Patents

Hand-operated type multi-tooth-form drawing machine Download PDF

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Publication number
CN203882468U
CN203882468U CN201420260512.7U CN201420260512U CN203882468U CN 203882468 U CN203882468 U CN 203882468U CN 201420260512 U CN201420260512 U CN 201420260512U CN 203882468 U CN203882468 U CN 203882468U
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CN
China
Prior art keywords
tooth
profile
pen
hand
along
Prior art date
Application number
CN201420260512.7U
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Chinese (zh)
Inventor
梁龙
沈毅
理中强
郑彪
李言
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武汉工程大学
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Application filed by 武汉工程大学 filed Critical 武汉工程大学
Priority to CN201420260512.7U priority Critical patent/CN203882468U/en
Application granted granted Critical
Publication of CN203882468U publication Critical patent/CN203882468U/en

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Abstract

The utility model provides a hand-operated type multi-tooth-form drawing machine including a worm shaft with two worms, the worm shaft synchronously drives two equal worm gears in separate paths, the two worm gears are respectively connected with two rotating shafts,one of the rotating shafts is connected with a four-bar linkage to perform reciprocating motion, a space cam is arranged on the second rotating shaft, the space cam is in a spiral groove structure, a cam driven pin is clamped in the groove and can move along the groove, the cam driven pin is connected with a rack type cutter and tooth bars, the tooth bars are connected through gears and drive a tooth drawing disc to rotate, the four-bar linkage is connected with and drives a pen carrying device, the pen carrying device includes an edge tooth head which is cooperatively contacted with the tooth form of the rack type cutter, and the pen carrying device draws the tooth form under the limitation of the edge tooth head displacement while moving. The drawing machine is convenient to operate, can rapidly draw the tooth forms of the gears as required, and increases students' interest and understanding in mechanical principles and gear generation method experiments.

Description

The multiple profile of tooth draught machine of hand-rail type
Technical field
The utility model relates to teaching and experiment equipment technical field, is specifically related to a kind of for the mechanical major multiple profile of tooth draught machine of hand-rail type that carries out Cutting Gear experiment of imparting knowledge to students.
Background technology
At present, the instrument that does Cutting Gear experiment forms by drawing fluted disc, gear, tooth bar and rack cutter.Experimenter needs successively intermittently short-distance movement rack drives gear to rotate, in the time of stagnating in rack-and-pinion, on the paper on drawing board, describe the track of cutter for one time one everywhere along the shape of tool with pencil, these process need eyes are stared on nib, the shape of some track envelope formative gears, depicts gear.On paper, can only draw two kinds of profiles of tooth (being standard tooth form and displacement profile of tooth), and will form undercut profile of tooth, need change undercut shaping meter.And it is loaded down with trivial details very long to draw tooth process, be difficult to imagine the process of generating method gear, reduce the interest of experimenter to experiment, be unfavorable for teaching.
Summary of the invention
Technical problem to be solved in the utility model is the deficiency for above-mentioned existence, provide a kind of easy to operate, can draw as requested fast the form of gear tooth, increase student to mechanical principle and the interest of Cutting Gear experiment and the multiple profile of tooth draught machine of hand-rail type of understanding.
The utility model solves the technical scheme that its technical matters adopts:
The multiple profile of tooth draught machine of hand-rail type, is characterized in that: include a worm shaft with two worm screws, along separate routes two large worm gears such as grade of synchrodrive; Two worm gears connect respectively two rotating shafts, and wherein the first rotating shaft connection four-bar mechanism moves reciprocatingly, and a space cam is installed in the second rotating shaft; Described space cam is spiral groove structured, and in groove, card has cam follower pin, and cam follower pin can be along concave slot sports; Described cam follower pin connects rack cutter and tooth bar, and tooth bar connects by gear and drives picture tooth disk to move; Described four-bar mechanism connects and drives a year pen device, carries a pen device and includes along tooth head, coordinates and contacts with the profile of tooth of rack cutter along tooth head, and a year pen device draws this profile of tooth under the restriction along the displacement of tooth head while movement; Described four-bar mechanism to-and-fro movement one bout, corresponding cam follower pin rotates a circle in the groove of space cam, drives picture tooth disk to rotate a tooth pitch simultaneously.
In such scheme, the described pen device that carries is arranged on slideway and can moves left and right, and slideway is installed and can be moved forward and backward in orbit, and track is a pair of being symmetrical set.
In such scheme, described carry that a pen device also includes penholder, spring, paintbrush, changes tooth screw axis, switch tracks hook and the head that switches tracks, its medi-spring, by carrying pen device and pull to the track in left side, makes to be adjacent to along the profile of tooth of tooth head and rack cutter.
In such scheme, described rack cutter is spatial structure, and rack cutter solid is distributed with multiple dissimilar profiles of tooth.
In such scheme, to be installed in the head that switches tracks upper with changing tooth screw axis for described penholder, and the hook that switches tracks is arranged on penholder right side, is arranged on and changes tooth screw axis left side, and can, changing lifting on tooth screw axis, switch dissimilar tooth form on corresponding rack cutter with this along tooth head.
In such scheme, described track end is provided with the skewback that switches tracks, and is provided with spill draw-in groove on the track on right side, carry pen device while moving to extreme position, switching tracks under skewback effect, the dogging that switches tracks enters spill draw-in groove, makes to separate and return with the profile of tooth of rack cutter along tooth head.
In such scheme, the spiral groove of described space cam rotates and within one week, is divided into two strokes, and its first 2/3 week is static stroke, and hand of spiral is vertical with space cam axis; Thereafter 1/3 week is feed distance, and hand of spiral and space cam axis tilt.
Principle of the present utility model is:
Utilize with rack cutter on profile of tooth fit tightly carry out the drawing of single profile of tooth along tooth headband dynamic load pen device, utilize worm shaft synchrodrive to draw tooth disk simultaneously and carry out feeding and rotatablely move, realize the drafting of multiple profiles of tooth.
Technical advantage of the present utility model is:
Easy and simple to handle, experimenter only need be by shake worm shaft in certain hour, paintbrush will be depicted fast undercut profile of tooth, standard tooth form, displacement profile of tooth on picture tooth disk, a series of mechanism driving has been strengthened student to mechanically operated understanding, and in experiment, more increase the interest of student to experiment, more profoundly understood the process of generating method gear.
Brief description of the drawings
Fig. 1 is the general structure stereographic map of the utility model embodiment;
Fig. 2 is the sectional structural map of the front view of the utility model embodiment;
Fig. 3 is the sectional structural map of the left view of the utility model embodiment;
Fig. 4 is the sectional structural map of the vertical view of the utility model embodiment;
1. worm shafts in figure, 2. the first worm screw, 3. the first rotating shaft, 4. the first worm gear, 5. the second worm screw, 6. the second rotating shaft, 7. slideway, 8 along tooth head, and the hook that 9. switches tracks, 10. changes tooth screw axis, 11. springs, 12. penholders, 13. rack cutters, 14. paintbrushes, 15. draw tooth disk, 16. space cams, 17. second worm gears, 18. cam follower pins, 19. gears, 20. tooth bars, 21. cranks, 22. four-bar mechanisms, 23. heads that switch tracks, 24. years pen devices, 25. tracks, 26 skewbacks that switch tracks.
Embodiment
Below in conjunction with embodiment, the utility model is further described:
The multiple profile of tooth draught machine of hand-rail type as shown in Fig. 1 Fig. 2 Fig. 3 Fig. 4, include a worm shaft 1, worm shaft 1 is provided with the first worm screw 2 and the second worm screw 5, connect respectively the first worm gear 4 and the second worm gear 17, and synchronously drive the first rotating shaft 3 and the second rotating shaft 6 to rotate, wherein the first rotating shaft 3 connects four-bar mechanism 22 by crank 21 and moves reciprocatingly, and a space cam 16 is installed in the second rotating shaft 6; Described space cam 16 is spiral groove structured, and in groove, card has cam follower pin 18, and cam follower pin 18 can be along concave slot sports; Described cam follower pin 18 connects rack cutter 13 and tooth bar 20, and tooth bar 20 connects by gear 19 and drives picture tooth disk 15 to move; Described four-bar mechanism 22 connects and drives a year pen device 24, carries a pen device 24 and includes along tooth head 8, coordinates and contacts with the profile of tooth of rack cutter 13 along tooth head 8, and a year pen device 24 draws this profile of tooth under the restriction along 8 displacements of tooth head while movement; Described four-bar mechanism 22 to-and-fro movement one bout, corresponding cam follower pin 18 rotates a circle in the groove of space cam 16, drives picture tooth disk 15 to rotate a tooth pitch simultaneously.
In the present embodiment, the described pen device 24 that carries is arranged on slideway 7 and can moves left and right, and slideway 7 is arranged on track 25 and can moves forward and backward, and track 25 is a pair of being symmetrical set.
In the present embodiment, described carry that a pen device 24 also includes penholder 12, spring 11, paintbrush 14, changes tooth screw axis 10, a hook 9 and switch tracks 23 switches tracks, its medi-spring 11 pulls to year pen device 24 on the track in left side, makes to be adjacent to along tooth head 8 and the profile of tooth of rack cutter 13.
In the present embodiment, described rack cutter 13 is spatial structure, and rack cutter 13 solids are distributed with multiple dissimilar profiles of tooth.
In the present embodiment, described penholder 12 is installed in and switches tracks on 23 with changing tooth screw axis 10, and the hook 9 that switches tracks is arranged on 12 right sides of pen, is arranged on and changes tooth screw axis 10 left sides along tooth head 8, and can change lifting on tooth screw axis 10, switch dissimilar tooth form on corresponding rack cutter 13 with this.
In the present embodiment, described track 25 ends are provided with the skewback 26 that switches tracks, on the track on right side, be provided with spill draw-in groove, acted on by four-bar mechanism 22, when carrying pen device 24 and moving to extreme position and be about to anxious returning, switching tracks under skewback 26 effects, the hook 9 that switches tracks snaps in spill draw-in groove, makes to separate and return with the profile of tooth of rack cutter 13 along tooth head 8.
In the present embodiment, the spiral groove of described space cam 16 rotates and within one week, is divided into two strokes, and its first 2/3 week is static stroke, and hand of spiral is vertical with space cam 16 axis; Thereafter 1/3 week is feed distance, and hand of spiral and space cam 16 axis tilt.
When use: experimenter shakes worm shaft 1, the first worm screw 2 on worm shaft 1 and the second worm screw 5 drive respectively the first worm gear 4, the second worm gear 17 to do synchronous fixed-axis rotation, and the crank 21 in the second worm gear 17 and four-bar mechanism 22 is by reference position coaxial rotation.The main power source of four-bar mechanism 22 is in the rotation of crank 21, the pulling force that crank 21 rotates additional upper spring 11 makes a year pen device 24 travel forward along the profile of tooth of rack cutter 13, meanwhile, the first worm gear 4 drives space cam 16 fixed-axis rotations, cam follower pin 18 is along space cam 16 concave slot sports, owing to being initially static stroke, the tooth bar 20 being this moment connected with cam follower pin 18 and picture tooth disk 15 transfixions, so the paintbrush 14 now moving together along with year pen device 24 is drawn out a profile of tooth on picture tooth disk 15; Anxious returning after four-bar mechanism 22 moves to far-end, carry pen device 24 be subject to the switching tracks power of skewback 26 and sticked into the right side of track 25, and be pulled along track 25 straight lines, during a year pen device 24 is pulled, cam follower pin 18 moves along the feed distance of space cam 16 grooves, travel forward transmission gear 19 and draw tooth disk 15 and rotate a tooth pitch of the tooth bar 20 being connected with cam follower pin 18; Then carry after pen device 24 is pulled and promoted to travel forward along profile of tooth by four-bar mechanism 22 again, tooth bar 20 and picture tooth disk 15 transfixion again.
Repeat above-mentioned routing motion, paintbrush 14 is being drawn many profiles of tooth that stay on tooth disk 15, draw envelope and gone out the form of gear tooth of a type, profile of tooth feature is to draw according to the difference of rack cutter 13 moduluses the profile of tooth number difference that envelope goes out, and the rack cutter 13 that for example modulus is 14 can go out a complete profile of tooth by envelope.
Draw after a complete profile of tooth, it is relative that experimenter will be transformed into another kind of profile of tooth along tooth head 8 by Rotation With Changing tooth screw axis 10, and repetitive operation just can be drawn out the form of gear tooth of another kind of type.
More than explanation is only Application Example of the present utility model, certainly can not limit with this interest field of the utility model, and the equivalence of therefore doing according to the utility model claim changes, and still belongs to protection domain of the present utility model.

Claims (7)

1. the multiple profile of tooth draught machine of hand-rail type, is characterized in that, includes a worm shaft with two worm screws, along separate routes two large worm gears such as grade of synchrodrive; Two worm gears connect respectively two rotating shafts, and wherein the first rotating shaft connection four-bar mechanism moves reciprocatingly, and a space cam is installed in the second rotating shaft; Described space cam is spiral groove structured, and in groove, card has cam follower pin, and cam follower pin can be along concave slot sports; Described cam follower pin connects rack cutter and tooth bar, and tooth bar connects by gear and drives picture tooth disk to move; Described four-bar mechanism connects and drives a year pen device, carries a pen device and includes along tooth head, coordinates and contacts with the profile of tooth of rack cutter along tooth head, and a year pen device draws this profile of tooth under the restriction along the displacement of tooth head while movement; Described four-bar mechanism to-and-fro movement one bout, corresponding cam follower pin rotates a circle in the groove of space cam, drives picture tooth disk to rotate a tooth pitch simultaneously.
2. the multiple profile of tooth draught machine of hand-rail type as claimed in claim 1, is characterized in that, the described pen device that carries is arranged on slideway and can moves left and right, and slideway is installed and can be moved forward and backward in orbit, and track is a pair of being symmetrical set.
3. the multiple profile of tooth draught machine of hand-rail type as claimed in claim 1, it is characterized in that, described carry that a pen device also includes penholder, spring, paintbrush, changes tooth screw axis, switch tracks hook and the head that switches tracks, its medi-spring will carry pen device and pull to left side, make to be adjacent to along the profile of tooth of tooth head and rack cutter.
4. the multiple profile of tooth draught machine of hand-rail type as claimed in claim 1, is characterized in that, described rack cutter is spatial structure, and rack cutter solid is distributed with multiple dissimilar profiles of tooth.
5. the multiple profile of tooth draught machine of hand-rail type as claimed in claim 3, it is characterized in that, described penholder with change tooth screw axis and be installed in and switch tracks on head, the hook that switches tracks is arranged on penholder right side, be arranged on and change tooth screw axis left side along tooth head, and can, changing lifting on tooth screw axis, switch dissimilar tooth form on corresponding rack cutter with this.
6. the multiple profile of tooth draught machine of hand-rail type as claimed in claim 2, it is characterized in that, described track end is provided with the skewback that switches tracks, on the track on right side, be provided with spill draw-in groove, carry pen device while moving to extreme position, switching tracks under skewback effect, the dogging that switches tracks enters spill draw-in groove, makes to separate and return with the profile of tooth of rack cutter along tooth head.
7. the multiple profile of tooth draught machine of hand-rail type as claimed in claim 1, is characterized in that, the spiral groove of described space cam rotates and within one week, is divided into two strokes, and its first 2/3 week is static stroke, and hand of spiral is vertical with space cam axis; Thereafter 1/3 week is feed distance, and hand of spiral and space cam axis tilt.
CN201420260512.7U 2014-05-21 2014-05-21 Hand-operated type multi-tooth-form drawing machine CN203882468U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420260512.7U CN203882468U (en) 2014-05-21 2014-05-21 Hand-operated type multi-tooth-form drawing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420260512.7U CN203882468U (en) 2014-05-21 2014-05-21 Hand-operated type multi-tooth-form drawing machine

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CN203882468U true CN203882468U (en) 2014-10-15

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Application Number Title Priority Date Filing Date
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104361821A (en) * 2014-11-28 2015-02-18 宁波大学 Gear generating presentation device for teaching
CN104882060A (en) * 2015-06-09 2015-09-02 成都大学 Novel gear generating experiment machine
CN105096679A (en) * 2014-05-21 2015-11-25 武汉工程大学 Hand-operated type multi-tooth-form drawing machine
CN105329029A (en) * 2015-12-09 2016-02-17 中国矿业大学 Parameter adjustable cam profile drawing instrument based on relative motion principle
CN105810079A (en) * 2016-04-26 2016-07-27 昆明理工大学 Gear generating instrument
CN106097870A (en) * 2016-06-17 2016-11-09 上海理工大学 A kind of gear enveloping device automatically
CN110570745A (en) * 2019-09-12 2019-12-13 武汉轻工大学 Automatic generating instrument

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105096679A (en) * 2014-05-21 2015-11-25 武汉工程大学 Hand-operated type multi-tooth-form drawing machine
CN104361821A (en) * 2014-11-28 2015-02-18 宁波大学 Gear generating presentation device for teaching
CN104361821B (en) * 2014-11-28 2017-11-07 宁波大学 A kind of gear enveloping apparatus for demonstrating for being used to impart knowledge to students
CN104882060B (en) * 2015-06-09 2017-06-27 成都大学 A kind of new gear meshed experiment machine
CN104882060A (en) * 2015-06-09 2015-09-02 成都大学 Novel gear generating experiment machine
CN105329029A (en) * 2015-12-09 2016-02-17 中国矿业大学 Parameter adjustable cam profile drawing instrument based on relative motion principle
CN105810079A (en) * 2016-04-26 2016-07-27 昆明理工大学 Gear generating instrument
CN106097870A (en) * 2016-06-17 2016-11-09 上海理工大学 A kind of gear enveloping device automatically
CN106097870B (en) * 2016-06-17 2019-01-01 上海理工大学 A kind of automatic gear enveloping device
CN110570745A (en) * 2019-09-12 2019-12-13 武汉轻工大学 Automatic generating instrument

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GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141015

Termination date: 20150521