CN209439870U - It is a kind of to determine equation graduation device - Google Patents
It is a kind of to determine equation graduation device Download PDFInfo
- Publication number
- CN209439870U CN209439870U CN201822200967.0U CN201822200967U CN209439870U CN 209439870 U CN209439870 U CN 209439870U CN 201822200967 U CN201822200967 U CN 201822200967U CN 209439870 U CN209439870 U CN 209439870U
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- China
- Prior art keywords
- pawl
- eccentric wheel
- index dial
- spring
- ratchet
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Abstract
It is used the utility model discloses a kind of lathe and determines equation graduation device, it include: eccentric wheel b, eccentric wheel a, positioning linkage rod, torsional spring, driving motor, ratchet, index dial, pawl holddown spring, pawl, positioning pin, travel switch, index dial card, live spindle, bevel gear, pawl connecting rod, threaded hole, the driving motor front end connects bevel gear, the bevel gear is connect by transmission shaft with ratchet, the ratchet with it is coaxially connected above and below index dial, the front end of ratchet occlusion pawl when indexing, the other end of the pawl connects the bald pawl holddown spring on pawl connecting rod, the pawl connecting rod is connected with eccentric wheel b, the positioning linkage rod connects eccentric wheel a and positioning pin.The present apparatus utilizes the cooperation of pawl, pawl connecting rod and index dial card, realizes accurate indexing, by the cooperation of eccentric wheel a, positioning linkage rod and positioning pin, realizes and is accurately positioned, improve efficiency by the cooperation of driving motor and travel switch.
Description
Technical field
It is specifically a kind of to determine equation graduation device the present invention relates to the machine tool accessory technical field of machining.
Background technique
Indexing means is a kind of common machining auxiliary device, for flange drilling, Milling Process of polygon etc., benefit
With calibrated dial ring and vernier, positioning pin and index dial and change gear will be loaded on the workpiece on top or chuck point
At any angle, any equal portions can be divided the circumference into, auxiliary lathe is carrying out various ditch slot ﹑ just using various cutters of different shapes
The processing work of Chi Lun ﹑ spiral Zheng Chi Lun ﹑ Archimedes spiral cam etc..
With the development and progress of society, the fast development of machinery industry, indexing huge to the consumption of dividing head, traditional
Header structure is turbine and worm transmission, manual calculations and rotational handle to the angle needed, and the work of equal part also needs identical behaviour
Make, it is time-consuming and laborious, and processing cost is higher.The indexing means used on the market at present mostly uses greatly by axis of rolling such as ball bearings
It holds and rotatably supports circular dividing table, keep circular dividing table rotation set by the indexing mechanism of the mechanical systems such as worm screw turbine mechanism
The mode of angle.This mode supports circular dividing table by rolling bearing, implements first retainer by worm screw turbine mechanism and turns
There are problems especially in the case where placing the occasion of circular dividing table of large-scale workpiece for dynamic mode.Problem be by rolling bearing to point
Under the occasion that degree platform is supported, there are the axis poor rigidity of the rotation axis of circular dividing table in structure, indexing accuracy cannot be improved.And
Indexing is realized if rotated using servo motor, although can guarantee indexing accuracy, the price of servo motor is often more
Valuableness increases production cost, reduces the practicability of dividing head, and between motor and the transmission mechanism and power of dividing head
Transmission is connect, so that structure is complicated for index dial, is caused difficult in maintenance.
Forefathers design several representational indexing means.For example, the Chinese patent of the patent No. 2018204494199 mentions
A kind of six direct dividing head of numerical control has been supplied, has been driven by the cooperation of duplex fluted disc, fixed gear plate, rotary fluted disc on the inside of workbench
The positioning pin on worm gear top realizes positioning operation, utilizes the null pick-up for transmitting ring connection of spindle top and counts sensing
Device controls rotary fluted disc, realizes accurate indexing, and the driving force of whole device is complete by the threephase asynchronous machine for being located at workbench bottom end
At.Although the device realizes that accurate six equation graduation, workbench take up a large area by rationally designing, and due to adopting
Rotatory force is transmitted with synchronous belt and synchronous pulley, rotation is easy excessively, causes the collision of part.
The Chinese patent of the patent No. 2007101441849 provides a kind of indexing means, utilizes what is be made of fluid bearing
Circular dividing table is rotatably supported on pedestal by transverse bearing, top thrust bearing and lower thrust bearing.It is examined by sensor
The bearing clearance size for surveying top thrust bearing is supplied to the pressure of top thrust bearing by the adjustment of pressure/flow adjustment mechanism
The pressure of fluid is precisely located and indexes to realize, but device indexing relies primarily on sensor control, hydraulic drive
Form be easy influenced by factors such as temperature, sealings, influence indexing accuracy；The Bearning mechanism of the present apparatus is complicated, and expense is compared in maintenance
When it is laborious.
The Chinese patent of the patent No. 2014206024912 provides a kind of binodal worm indexing head, including cabinet, indexing
Main shaft, servo motor；The indexing spindle is equipped with worm gear；The dividing head is additionally provided with worm screw, the worm screw with watch
Take motor connection；The worm gear is engaged with worm screw；The worm screw is binodal worm screw；The binodal worm screw is two coaxially
Part, and it is equipped with through-hole at binodal worm screw center, the through-hole at binodal worm screw center described in two pieces covers in a mandrel, passes through the heart
Axis connects two binodal worm screws.The present apparatus can eliminate the back lash of worm and wheel by binodal worm structure automatically,
Improve the indexing accuracy of dividing head.However the precision that the device preferably solves conventional turbine worm gearing not high is asked
Topic, but structure is complicated, higher to the connection request between worm gear, worm screw and mandrel, and using the cost of servo motor compared with
Height influences the practicability of dividing head.
Summary of the invention
Equation graduation device is determined the object of the present invention is to provide a kind of, to solve the above-mentioned problems in the prior art.
To achieve the above object, the present invention provides technical solution: a kind of to determine equation graduation device, comprising: eccentric wheel
B, eccentric wheel a, torsional spring, pawl connecting rod, driving motor, index dial ratchet, pawl restoring spring, pawl, positioning pin, stroke are opened
Pass, index dial card, live spindle, bevel gear and threaded hole composition, the driving motor front end connect bevel gear, the umbrella tooth
Wheel is connected by axis with ratchet, and the ratchet is coaxial with index dial and is distributed up and down, the front end of the ratchet occlusion pawl,
And the tail end of the pawl connects pawl holddown spring, the pawl holddown spring is fixed on pawl connecting rod, and the pawl connects
Bar is connected with eccentric wheel b, is fixed with positioning linkage rod on the eccentric wheel a, and when positioning operation, the positioning linkage rod surrounds torsional spring
Can be in contact with positioning pin after rotation, when indexing the positioning pin, positioning linkage rod and eccentric wheel a be linked together.
One end of the index dial is connected by index dial card with index dial card reset spring, the other end and eccentric wheel
A connects, and travel switch is arranged in the lower section of the eccentric wheel a, and the two is connected by briquetting, the briquetting be located at eccentric wheel b with
Between eccentric wheel a, it is in contact with eccentric wheel a, the rotation that the travel switch passes through control driving motor main shaft.
Preferably, the live spindle is located at whole device front end, is screwed on main shaft bottom plate, and fixed workpiece is arranged in centre
Threaded hole, rotating bar is arranged in outer circle, and when indexing, the live spindle was hung down mutually two-by-two with the rotational plane of index dial, umbrella shape wheel
Directly.
Preferably, described eccentric wheel b and eccentric wheel a or so is arranged side by side, complete by the conduction of rotation in indexing operation
At the accurate positioning of index dial and the indexing operation of a fixed angle.
Preferably, the pawl connecting rod is connected with eccentric wheel b, and the both ends of the pawl connecting rod are fixed with pawl and compress bullet
Spring and pawl restoring spring, the pawl holddown spring and pawl restoring spring are arranged vertically, and two springs pass through pawl connecting rod
Power conduction come being engaged between co- controlling pawl front end and ratchet and release,.
Preferably, the rotation of the eccentric wheel a can drive positioning linkage rod under the rotation of torsional spring, push down positioning pin.
Preferably, the lower part of the index dial card is equipped with index dial card reset spring, is dividing index dial card
It is resetted in time after degree.
Preferably, it is fitted closely between the eccentric wheel a, positioning linkage rod and positioning pin；The eccentric wheel a and index dial card
It is fitted closely between piece.
The beneficial effects of the present invention are the close fits by ratchet, pawl and driving motor to guarantee index dial rotation
Stability is realized using the cooperation of eccentric wheel a, positioning linkage rod and positioning pin and is accurately positioned, passes through travel switch, eccentric wheel b, spine
Indexing operation is completed in the cooperation of pawl and index dial card, and whole device simple structure is easy to operate, passes through turn of two eccentric wheels
It is dynamic, it improves work efficiency, resistance is reduced by the tight fit of pawl, pawl connecting rod and index dial card, save and add
Work cost.
Detailed description of the invention
Fig. 1 is main view of the invention；
Fig. 2 is overlooking structure figure of the invention；
Fig. 3 is right view of the invention；
Fig. 4 is rearview of the invention；
Fig. 5 is stereoscopic schematic diagram of the invention (visual angle 1)；
Fig. 6 is stereoscopic schematic diagram of the invention (visual angle 2).
In figure, 1. eccentric wheel b, 2. eccentric wheel a, 3. torsional springs, 4. positioning linkage rods, 5. driving motors, 6. index dials, 7. spine
Wheel, 8. pawl restoring springs, 9. pawls, 10. pawl holddown springs, 11. positioning pins, 12. travel switches, 13. index dial cards,
14. index dial card reset spring, 15. live spindles, 16. bevel gears, 17. pawl connecting rods, 18. transmission shafts, 19. threaded holes,
20. briquetting, 21. rotating bars, 22. main shaft bottom plates.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only the preferred embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1: as Fig. 1-it is shown in fig. 6 it is a kind of determine equation graduation device, mainly by eccentric wheel b1, eccentric wheel a2, turn round
Spring 3, driving motor 5, index dial 6, ratchet 7, pawl restoring spring 8, pawl 9, positioning pin 11, travel switch 12, index dial card
Piece 13, live spindle 15 and bevel gear 16 form, and the live spindle 15 is located at whole device front end, and the centre head of workpiece is fixed
In the threaded hole 19 among live spindle 15, live spindle outer circle is equipped with rotating bar 21, when indexing the live spindle 15
It is orthogonal two-by-two with the rotational plane of index dial 6, umbrella shape wheel 16；5 front end of driving motor connects bevel gear 16, the umbrella
Gear 16 is connect by transmission shaft 18 with ratchet 7, rotatory force is transmitted to ratchet 7, the ratchet 7 and about 6 index dial are coaxial
Connection, when indexing, the ratchet 7 was engaged the front end of pawl 9, and the pawl under the other end connection impaction state of the pawl 9 compresses
Spring 10, pawl 9 is not in contact with ratchet 7 after indexing；The pawl holddown spring 10 is fixed on pawl connecting rod 17, and described
Pawl restoring spring 8 is fixed on the other end of pawl connecting rod 17,9 front end of the two co- controlling pawl and ratchet 7 be engaged and point
From.The pawl connecting rod 17 is connected with eccentric wheel a2；Positioning linkage rod 4, the positioning linkage rod 4 are fixed on the eccentric wheel a2
It can be contacted by the rotation of torsional spring 3 with positioning pin 11, the tail end of the positioning pin 11 is fixed with spring；The index dial card
13 lower end is equipped with index dial card reset spring 14, and one end of the index dial card 13 is connected with pawl connecting rod 17,
The other end is connected with eccentric wheel a2；Travel switch 12, and the eccentric wheel a2 and stroke is arranged in the lower end of the eccentric wheel a2
Switch 12 is connected by briquetting 20, and the travel switch 12 both can use briquetting 20 and control 5 main axis of driving motor
Start and stop can also count indexing operation.
Concrete operations process: when carrying out indexing operation, the centre head of workpiece to be indexed is screwed by rotary motion bar 21 first
In the threaded hole 19 of live spindle 15, then start driving motor 5, by the rotation of bevel gear 16 by rotary force from transmission shaft
18, pawl connecting rod 17 is conducted to eccentric wheel b1, and pawl connecting rod 17 is stirred in eccentric wheel b1 rotation, at this time the pawl restoring spring 10
Thrust by pawl connecting rod 17 is compacted, its front end is separated with ratchet 7 after pawl 9 resets, in the rotation of rotating electric machine 5
Power acts on bottom ratchet wheel 7 and index dial 6 is driven to rotate, so that live spindle 15 drives workpiece rotation to go out a fixed sub-degree angle；
Eccentric wheel a2 is rotated at the same time, pushes index dial card 13 open, while positioning linkage rod 4 being pulled to rotate around torsional spring 3, compressing positioning pin
11；When reaching scheduled sub-degree angle, shutoff stroke switch 12, driving motor 5 stop power supply immediately, pass through briquetting 20 immediately
Eccentric wheel a2 rotation is triggered, while index dial card 13 is stuck by spring force reset, band pawl connecting rod 17 acts, and pawl compresses
Spring 10 is compacted by the pulling force effect of pawl connecting rod 17, so that it is engaged the front end of pawl 9 with 7 phase of ratchet, it is same with ratchet 7
The index dial 6 of axis, which is also forced, to stop operating, and the positioning linkage rod 4 of spring-loaded turns over an angle around torsional spring 3 and resets, and fixed
Position pin 11 disengages, and the positioning pin 11 pops up under spring force completes positioning operation, the indexing of a fixed angle
Operation is completed.
In the description of the present invention, it is to be understood that, term " coaxial ", " front end ", " one end ", " top ", " middle part ",
The orientation or positional relationship of the instructions such as " other end ", " tail end ", " front ", " outer circle " is orientation based on the figure or position
Relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
There is specific orientation, be constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " setting ", " connection ", " fixation ",
The terms such as " being screwed on ", " arrangement " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or at one
Body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the interaction relationship of connection or two elements inside two elements, unless otherwise restricted clearly, for this field
Those of ordinary skill for, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of determine equation graduation device, mainly by eccentric wheel b(1), eccentric wheel a(2), torsional spring (3), driving motor (5), indexing
Disk (6), ratchet (7), pawl restoring spring (8), pawl (9), positioning pin (11), travel switch (12), index dial card (13),
Live spindle (15), bevel gear (16) composition, it is characterised in that: driving motor (5) front end connects bevel gear (16), described
Bevel gear (16) is connect by transmission shaft (18) with ratchet (7), and the ratchet (7) is coaxially connected up and down with index dial (6), described
The front side of ratchet (7) can be engaged pawl (9), and the other end of the pawl (9) connects pawl holddown spring (10), the pawl
Holddown spring (10) is fixed on pawl connecting rod (17), and the pawl connecting rod (17) is connected with eccentric wheel b(1), the bias
Wheel a(2) on connect and is also equipped with positioning linkage rod (4), the positioning linkage rod (4) can be with positioning pin by rotating around torsional spring (3)
(11) it is in contact, the tail end of the positioning pin (11) is fixed with spring；
The eccentric wheel a(2) it is in contact with index dial card (13), the other end of the index dial card (13) is connected to indexing
Disk card reset spring (14)；The eccentric wheel a(2) below be provided with travel switch (12), the two pass through briquetting (20) phase
Connection, and the briquetting (20) is located at eccentric wheel b(1) and eccentric wheel a(2) between, travel switch (12) warp in indexing
Briquetting (20) is crossed to control the rotation of driving motor (5) main shaft.
2. a kind of equation graduation device is determined according to claim 1, it is characterised in that: the live spindle (15) is located at whole
The front end of a device is screwed on main shaft bottom plate (22), and threaded hole (19) are arranged in the intermediate of the live spindle (15), outer circle peace
Equipped with rotating bar (21)；Live spindle (15) and the rotational plane of index dial (6), bevel gear (16) are perpendicular two-by-two when indexing.
3. a kind of equation graduation device is determined according to claim 1, it is characterised in that: the eccentric wheel b(1) and eccentric wheel
A(2) left and right is arranged side by side.
4. a kind of equation graduation device is determined according to claim 1, it is characterised in that: the both ends of the pawl connecting rod (17)
It is connect respectively with pawl holddown spring (10) and pawl restoring spring (8), controls the occlusion and release of pawl (9) front end, and
The pawl holddown spring (10) and pawl restoring spring (8) are arranged vertically.
5. a kind of equation graduation device is determined according to claim 1, it is characterised in that: the eccentric wheel a(2) it can pass through
Rotate driving positioning linkage rod (4) pushes down positioning pin (11) under the rotation of torsional spring (3).
6. a kind of equation graduation device is determined according to claim 1, it is characterised in that: under the index dial card (13)
Portion is equipped with index dial card reset spring (14).
7. a kind of equation graduation device is determined according to claim 1, it is characterised in that: when indexing, the eccentric wheel a(2),
It is fitted closely between positioning linkage rod (4) and positioning pin (11)；The eccentric wheel a(2) and index dial card (13) between closely paste
It closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822200967.0U CN209439870U (en) | 2018-12-26 | 2018-12-26 | It is a kind of to determine equation graduation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822200967.0U CN209439870U (en) | 2018-12-26 | 2018-12-26 | It is a kind of to determine equation graduation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209439870U true CN209439870U (en) | 2019-09-27 |
Family
ID=68015709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822200967.0U Expired - Fee Related CN209439870U (en) | 2018-12-26 | 2018-12-26 | It is a kind of to determine equation graduation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209439870U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109434561A (en) * | 2018-12-26 | 2019-03-08 | 大连恒基数控机床有限公司 | It is a kind of to determine equation graduation device |
| CN113035087A (en) * | 2021-04-29 | 2021-06-25 | 江西应用技术职业学院 | Think political affairs class with knowledge contest integrating device |
-
2018
- 2018-12-26 CN CN201822200967.0U patent/CN209439870U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109434561A (en) * | 2018-12-26 | 2019-03-08 | 大连恒基数控机床有限公司 | It is a kind of to determine equation graduation device |
| CN113035087A (en) * | 2021-04-29 | 2021-06-25 | 江西应用技术职业学院 | Think political affairs class with knowledge contest integrating device |
| CN113035087B (en) * | 2021-04-29 | 2022-05-27 | 江西应用技术职业学院 | Think political affairs class with knowledge contest integral device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190927 Termination date: 20201226 |