CN108098075A - A kind of door closer rack plunger mill teeth device and its method of work - Google Patents
A kind of door closer rack plunger mill teeth device and its method of work Download PDFInfo
- Publication number
- CN108098075A CN108098075A CN201611050225.3A CN201611050225A CN108098075A CN 108098075 A CN108098075 A CN 108098075A CN 201611050225 A CN201611050225 A CN 201611050225A CN 108098075 A CN108098075 A CN 108098075A
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- plunger
- inserted link
- cylinder
- mill teeth
- slide
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F5/00—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made
- B23F5/20—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
- B23F23/02—Loading, unloading or chucking arrangements for workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
- B23F23/02—Loading, unloading or chucking arrangements for workpieces
- B23F23/06—Chucking arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The present invention relates to a kind of door closer rack plunger mill teeth devices and its method of work, including feeding device, clamping device and cutting apparatus, the feeding device includes rotatable inserted link, the internal diameter clearance fit of plunger of the diameter of the inserted link with treating mill teeth, so that after the plunger of mill teeth is inserted in inserted link, inserted link rotation drives plunger rotation, so that the eccentric side of plunger is placed in the downside of inserted link under gravity and effect of inertia when inserted link stops rotating, thus accurately finds out the eccentric side of plunger；The clamping device includes the fixture for clamping tooth post plug to be milled, the cutting apparatus includes rotatable cutting power-driven cutter head, the plunger of eccentric side is found out by, close to the cutting power-driven cutter head, rack being milled out on the surface of plunger eccentric side by cutting power-driven cutter head after the clamp；It crosses and using with the inserted link of plunger endoporus clearance fit plunger is driven to rotate, can fast and accurately find the eccentric side of plunger, and complete to position.
Description
Technical field
The present invention relates to door closer Piston Machining equipment technical field, particularly a kind of door closers to be filled with rack plunger mill teeth
It puts and its method of work.
Background technology
Door closer is the hydraulic press of a spring-like on door leaf, when door unlatching after can by compression after discharge, by door from
It is dynamic to shut, play the role of as single or double acting door, it is ensured that after door is opened, accurate, timely closing to initial position.
The operation principle of door closer is：When opening the door, door body drives connecting rod action, and rotates transmission gear, sliding tooth
The movement of plunger, spring is compressed during plunger motion.After the completion of door opening process, since spring is in opening process
In compressed, the elastic potential energy put aside is released, and by plunger toward reverse push, band nutating gear and door closer connecting rod turn
It is dynamic, make a closing.Although the door closer structure of different manufacturers production, size are variant, principle is identical.
Above-mentioned rack plunger is all that milling shapes on milling machine or gear hobbing shapes on gear-hobbing machine, specific processing method
It is：Round steel material blanking-rough turn outer circle-endoporus-mill teeth top plane-mill teeth of brill bias or the tooth of gear hobbing rack, Chinese patent are awarded
Power notification number CN102303218B, the processing method and its particular manufacturing craft for disclosing a kind of plunger for door closer, include successively with
Lower step：Cut material, necking, shaping, crowded teeth, turning, carbo-nitriding heat treatment, cylindrical grinding and riveting one-way valve seat, wherein shaping
Including shaping necking head and shaping tube body, the crowded teeth is that the setting position of the upper surface of plunger is squeezed to form spline-simulating.
Since plunger sheet is as cylinder, inevitably there is certain eccentric situation in when processing, in order to extend rack
The service life of plunger often processes rack in the relatively thick one side of plunger wall body, therefore when carrying out mill teeth to plunger
Generally require to find the peak of plunger；Existing plunger milling equipment is mostly by installation plunger by hand, and naked eyes judge plunger
Eccentric side, often result in judgement there are deviation, and influence efficiency.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of rack plunger millings of door closer simple in structure, easily operated
Tooth device and its method of work.
In order to solve the above technical problems, door closer provided by the invention rack plunger mill teeth device, including：Feeding fills
It puts, clamping device and cutting apparatus, the feeding device include rotatable inserted link, the diameter of the inserted link and the plunger for treating mill teeth
Internal diameter clearance fit so that inserted link under rotation status is inserted into after the plunger of mill teeth, inserted link rotation drives plunger rotation, inserts
So that the eccentric side of plunger is placed in the downside of inserted link under gravity and effect of inertia when bar stops rotating, column is thus accurately found out
The eccentric side of plug；The clamping device includes the fixture for clamping tooth post plug to be milled, and the cutting apparatus includes rotatable
Cutting power-driven cutter head, find out the plunger of eccentric side by after the clamp close to the cutting power-driven cutter head, it is dynamic by cutting
Power cutter head mills out rack on the surface of plunger eccentric side.
Further, the clamping device further includes translational slide, lower platen, and the bottom of the translational slide sets translation to lead
To bar, further include to drive the hydraulic cylinder of the translational slide movement, so that the translational slide can be led along the translation
To bar translation；The top fixed setting lifting guide rod of the translational slide, the lower platen and the lifting guide rod
Be slidably matched, the fixture is placed in the lower face of the lower platen so that the translational slide move when, drive fixture it is close or
Away from the cutting apparatus.
Further, the cutting apparatus further includes motor and the shaft by motor driving rotation, the cutting power-driven cutter head
The end for being fixedly connected on the shaft is placed on the side-lower of the fixture so that translational slide movement rear jig can it is close or
Away from the cutting power-driven cutter head.
Further, the feeding device further includes the sliding seat arranged on the translational slide one side, and the sliding seat is through cunning
Cylinder of taking offence driving can be closer or far from the translational slide；Lifting cylinder is set on the sliding seat, the lifting cylinder output shaft
Top sets rotary extension cylinder, which is fixedly linked with the inserted link, so that rotary extension cylinder
Output shaft rotation the inserted link is driven to rotate when stretching out.
Further, door closer further includes the feeding sliding slot being obliquely installed, the feeding sliding slot with rack plunger mill teeth device
Upper set is suitable for the concave passage that plunger rolls, and the discharge port of the feeding sliding slot is placed in the front end of the inserted link, so that described
When rotary extension cylinder starts in the endoporus of the plunger in the rotatable insertion feeding sliding slot exit of inserted link.
Further, the lower face of the lower platen sets slide, and the fixture includes being placed in the fixation of described slide one end
Baffle and the die sleeve that can be slided compared with the slide, the die sleeve are connected with oil cylinder die sleeve to be driven to be slided along slide, so that
When the plunger is delivered to by feeding device between fixed baffle and die sleeve, die sleeve described in hydraulic oil cylinder driving is engaged with fixed baffle
Plunger is clamped.
The above-mentioned door closer method of work of rack plunger mill teeth device, includes the following steps：
A, the plunger for treating mill teeth is inserted into feeding sliding slot and slide downward, first starts rotary extension cylinder and cause inserted link rotation forward
The endoporus of the plunger in insertion feeding sliding slot exit is stretched out, while starts lifting cylinder and causes inserted link that plunger is driven to rise, with band
Dynamic plunger rotation, after lifting cylinder rises to predeterminated position, rotary extension cylinder stops rotating so that inserted link is static, between inserted link
When the plunger of gap cooperation stops operating under the action of gravity and inertia, heavier bias is placed on the downside of inserted link, completes column
Fill in the positioning of eccentric side.
B, starting sliding cylinder promotes sliding seat is whole to be moved to the translational slide so that defeated with the plunger of inserted link socket
It send to the lower section of lower platen, is placed between fixed baffle and die sleeve.
C, hydraulic oil cylinder driving die sleeve is started along slide to the fixed baffle displacement, drive plunger is moved axially along inserted link, with
Die sleeve and fixed baffle is made to form plunger to clamp, locked cylinder is to lock plunger；Rotary extension cylinder is again started up,
So that the output shaft of rotary extension cylinder is shunk inserted link is driven to exit plunger endoporus.
D, motor is started, driving cutting power-driven cutter head rotation starts hydraulic cylinder driving translational slide and translates so that plunger
Eccentric side close to cutting power-driven cutter head so that cutting power-driven cutter head mill out rack in the eccentric side of plunger；After the completion of mill teeth, institute
Translational slide reset is stated, oil cylinder unlocks and drives end face of the die sleeve away from plunger so that plunger enters splicing sliding slot, under completion
Material.
Repeat the above steps A to D, you can completes the Continuous maching of multiple plungers, substantially increases mill teeth efficiency.
The technique effect of invention：（1）The door closer rack plunger mill teeth device of the present invention compared with the prior art, leads to
It crosses and using with the inserted link of plunger endoporus clearance fit plunger is driven to rotate, can fast and accurately find the eccentric side of plunger, and
Complete positioning；Rack is milled out in the eccentric side of plunger using rotatable cutting power-driven cutter head, the rack plunger of acquisition uses the longevity
It orders longer；（2）By hydraulic cylinder translational slide plunger is driven to be moved to cutting power-driven cutter head during mill teeth, can effectively kept away
Exempt from the problem of plunger mill teeth rear surface leaves burr, the rack plunger of acquisition is brighter and cleaner, avoids subsequently polishing；（3）This
Device realizes plunger positioning, the automatic continuous production of clamping, mill teeth, and production efficiency improves 3 times compared to artificial clamping,
And the rack plunger qualification rate higher obtained.
Description of the drawings
The present invention is described in further detail with reference to Figure of description：
Fig. 1 is the dimensional structure diagram of the door closer rack plunger mill teeth device of the present invention；
Fig. 2 is the top view of the door closer rack plunger mill teeth device of the present invention；
Fig. 3 is the front view of Fig. 2.
In figure：Plunger 1, inserted link 11, rotary extension cylinder 12, lifting cylinder 13, sliding seat 14, sliding cylinder 15, top plate
21, lower platen 22 lifts guide rod 23, translational slide 24, guided in translation bar 25, motor 41, shaft 42, feeding sliding slot 5, splicing
Sliding slot 6, pedestal 7, blanking cylinder 8.
Specific embodiment
Embodiment 1
As shown in Figure 1 to Figure 3, the door closer of the present embodiment rack plunger mill teeth device, including：Pedestal 7 is set on the pedestal 7
Put feeding device, clamping device and cutting apparatus, clamping device includes translational slide 24, lower platen 22, fixture, water on pedestal 7
Flat to set 2 guided in translation bars 25, the bottom both sides of translational slide 24 are slidably matched respectively with guided in translation bar 25, through hydraulic oil
Cylinder driving translational slide 24 can be compared with 7 translation gliding of pedestal；The top of translational slide 24 is fixedly installed 3 vertical liftings and leads
To bar 23, the top fixed setting top plate 21 of the lifting guide rod 23, lower platen 22 is placed between top plate 21 and translational slide 24,
And be slidably matched with each lifting guide rod 23, which can lift guide rod 23 through cylinder drives edge and carry out lift adjustment；
The lower face of lower platen 22 sets slide, and fixture includes the fixed baffle for being placed in slide one end and the mould that can be slided compared with slide
Set, die sleeve is slided by hydraulic oil cylinder driving along slide, for plunger 1 to be clamped.
Feeding device includes the sliding seat 14 arranged on 24 one side of translational slide, and sliding seat 14 drives reliably through sliding cylinder 15
Close or remote from translational slide 24；Lifting cylinder 13 is set on the sliding seat 14, and the top of 13 output shaft of lifting cylinder sets rotation
Turn telescopic cylinder 12, which is fixedly connected with inserted link 11；The diameter of the inserted link 11 and the column for treating mill teeth
The internal diameter clearance fit of plug 1, so that the inserted link 11 under rotation status is inserted into after the plunger 1 of mill teeth, the rotation of inserted link 11 drives column
1 rotation of plug, so that the eccentric side of plunger 1 is placed in the downside of inserted link 11 under gravity and effect of inertia when inserted link 11 stops rotating,
Thus the eccentric side of plunger 1 is accurately found out.
Cutting apparatus includes motor 41 and the shaft 42 by motor driving rotation, and the end of the shaft 42 is fixedly connected with cutting
Power-driven cutter head, the cutting power-driven cutter head are placed in the side-lower of fixture, so that by the plunger 1 of clamp after the movement of translational slide 24
Closer or far from cutting power-driven cutter head by cutting power-driven cutter head rack can be milled out on the surface of 1 eccentric side of plunger.
Door closer further includes the feeding sliding slot 5 being obliquely installed, splicing sliding slot 6, feeding sliding slot with rack plunger mill teeth device
5th, being set on splicing sliding slot 6 and be suitable for the concave passage that plunger 1 rolls, the discharge port of feeding sliding slot 5 is placed in the front end of inserted link 11, with
Make during the startup of rotary extension cylinder 12 in the endoporus for the plunger 1 that inserted link 11 can be inserted into 5 exit of feeding sliding slot；Splicing sliding slot 6 by
Blanking cylinder 8 drives, and is movable to the lower section of fixture, so that 1 mill teeth of plunger completes rear jig pine folder, plunger 1 can enter splicing
Sliding slot 6.
Embodiment 2
The method of work of the door closer of the embodiment 1 rack plunger mill teeth device, including：
A, the plunger 1 for treating mill teeth is inserted into feeding sliding slot 5 and slide downward, first starts rotary extension cylinder 12 so that inserted link 11 revolves
Turn to forward extend out the endoporus of the plunger 1 in 5 exit of insertion feeding sliding slot, while start lifting cylinder 13 so that inserted link 11 drives column
Plug 1 is lifted off feeding sliding slot 5, and plunger 1 rotates under the drive of inserted link 11；After lifting cylinder 13 rises to predeterminated position, rotation
Turn telescopic cylinder 12 to stop rotating so that inserted link 11 is static, when stopping operating with the plunger 1 of 11 clearance fit of inserted link in gravity and
Under the action of inertia, heavier bias is placed on the downside of inserted link 11, thus completes the positioning of 1 eccentric side of plunger.
B, starting sliding cylinder 15 promotes sliding seat 14 is whole to be moved to translational slide 24 so that the column being socketed with inserted link 11
Plug 1 is delivered to the lower section of lower platen 22, is placed between fixed baffle and die sleeve.
C, hydraulic oil cylinder driving die sleeve is started along slide to fixed baffle displacement, drive plunger 1 is moved axially along inserted link 11, so that
Die sleeve forms plunger with fixed baffle and clamps, and locked cylinder；It is again started up rotary extension cylinder 12 so that rotary extension gas
The output shaft of cylinder 12, which is shunk, drives inserted link 11 to exit plunger endoporus.
D, motor 41 is started, power-driven cutter head rotation is cut in driving, and startup hydraulic cylinder driving translational slide 24, which translates, to be caused
The eccentric side of plunger 1 is close to cutting power-driven cutter head, so that cutting power-driven cutter head mills out rack in the eccentric side of plunger 1, obtains tooth
Plunger；After the completion of mill teeth, translational slide 24 resets, and blanking cylinder 8 starts the lower section that driving splicing sliding slot 6 is placed in fixture, oil
Cylinder unlocks and drives end face of the die sleeve away from rack plunger so that rack plunger enters splicing sliding slot 6, completes blanking.
In use, mill teeth depth can be set by adjusting the position of lower platen 22.
Repeat the above steps A to D, you can completes the Continuous maching of multiple plungers, substantially increases mill teeth efficiency.
Obviously, the above embodiment is merely an example for clearly illustrating the present invention, and is not to the present invention
The restriction of embodiment.For those of ordinary skill in the art, it can also be made on the basis of the above description
Its various forms of variation or variation.There is no necessity and possibility to exhaust all the enbodiments.And these belong to this hair
The obvious changes or variations that bright spirit is extended out is still in the protection scope of this invention.
Claims (7)
1. a kind of door closer rack plunger mill teeth device, which is characterized in that including：Feeding device, clamping device and cutting dress
It puts, the feeding device includes rotatable inserted link（11）, the inserted link（11）Diameter and treat the plunger of mill teeth（1）Internal diameter between
Gap coordinates, so that the inserted link under rotation status（11）The plunger of mill teeth is treated in insertion（1）Afterwards, inserted link（11）Rotation drives plunger（1）
Rotation, inserted link（11）Cause plunger when stopping rotating（1）Eccentric side be placed in inserted link under gravity and effect of inertia（11）Under
Side；The clamping device includes the plunger that will treat mill teeth（1）The fixture of clamping, the cutting apparatus include rotatable cut
Power-driven cutter head is cut, finds out the plunger of eccentric side（1）By the close cutting power-driven cutter head after the clamp, by cutting power
Cutter head mills out rack on the surface of plunger eccentric side.
2. door closer according to claim 1 rack plunger mill teeth device, which is characterized in that the clamping device also wraps
Include translational slide（24）, lower platen（2）, the translational slide（24）Bottom set guided in translation bar（25）, further include and be used for
Drive the translational slide（24）Mobile hydraulic cylinder, so that the translational slide（24）It can be along the guided in translation bar（25）
Translation；The translational slide（24）Top fixed setting lifting guide rod（23）, the lower platen（22）With the liter
Guide rod drops（23）It is slidably matched, the fixture is placed in the lower platen（22）Lower face.
3. door closer according to claim 2 rack plunger mill teeth device, which is characterized in that the cutting apparatus also wraps
Include motor（41）With the shaft by motor driving rotation（42）, it is described cutting power-driven cutter head be fixedly connected on the shaft（42）'s
End is placed on the side-lower of the fixture.
4. door closer according to claim 3 rack plunger mill teeth device, which is characterized in that the feeding device also wraps
It includes arranged on the translational slide（24）The sliding seat of one side（14）, the sliding seat（14）Through sliding cylinder（15）Driving can be close
Or away from the translational slide（24）；The sliding seat（14）Upper setting lifting cylinder（13）, the lifting cylinder（13）Output shaft
Top sets rotary extension cylinder（12）, the rotary extension cylinder（12）Output shaft and the inserted link（11）It is fixedly linked, so that
Rotary extension cylinder（12）Output shaft rotation stretch out when drive the inserted link（11）Rotation.
5. door closer according to claim 4 rack plunger mill teeth device, which is characterized in that further include what is be obliquely installed
Feeding sliding slot（5）, the feeding sliding slot（5）Upper set is suitable for plunger（1）The concave passage of rolling, the feeding sliding slot（5）'s
Discharge port is placed in the inserted link（11）Front end so that the rotary extension cylinder（12）Inserted link during startup（11）Rotatable insertion
Feeding sliding slot（5）The plunger in exit（1）Endoporus in.
6. door closer according to claim 2 rack plunger mill teeth device, which is characterized in that the lower platen（22）'s
Lower face sets slide, and the fixture includes the fixed baffle for being placed in described slide one end and can be compared with slide slip
Die sleeve, the die sleeve are connected with oil cylinder die sleeve to be driven to be slided along slide, so that the plunger（1）It is delivered to by feeding device solid
After determining between baffle and die sleeve, die sleeve described in hydraulic oil cylinder driving is engaged with fixed baffle by plunger（1）It clamps.
7. the door closer according to claim 6 method of work of rack plunger mill teeth device, which is characterized in that including such as
Lower step：
A, the plunger of mill teeth will be treated（1）Insert feeding sliding slot（5）And slide downward, first start rotary extension cylinder（12）So that it inserts
Bar（11）Rotation forward extends out insertion feeding sliding slot（5）The plunger in exit（1）Endoporus, while start lifting cylinder（13）Make
Obtain inserted link（11）Drive plunger（1）Rise, to drive plunger（1）Rotation, lifting cylinder（13）After rising to predeterminated position, rotation
Telescopic cylinder（12）It stops rotating so that inserted link（11）It is static, with inserted link（11）The plunger of clearance fit（16）When stopping operating
Under the action of gravity and inertia, heavier bias is placed on inserted link（11）Downside, complete plunger（1）The positioning of eccentric side；
B, sliding cylinder is started（15）Promote sliding seat（14）Integrally to the translational slide（24）It is mobile so that with inserted link（11）
The plunger of socket（1）It is delivered to lower platen（22）Lower section, be placed between fixed baffle and die sleeve；
C, start hydraulic oil cylinder driving die sleeve along slide to the fixed baffle displacement, drive plunger（1）Along inserted link（11）Axial movement,
So that die sleeve and fixed baffle are to plunger（1）It is formed and clamped, locked cylinder is with to plunger（1）It is locked；It is again started up rotating
Telescopic cylinder（12）So that rotary extension cylinder（12）Output shaft shrink drive inserted link（11）Exit plunger（1）Endoporus；
D, motor is started（41）, driving cutting power-driven cutter head rotation, startup hydraulic cylinder driving translational slide（24）Translation causes
Plunger（1）Eccentric side close to cutting power-driven cutter head so that cutting power-driven cutter head in plunger（1）Eccentric side mill out rack；Milling
After the completion of tooth, the translational slide（24）It resets, oil cylinder unlocks and drives die sleeve away from plunger（1）End face so that plunger into
Enter splicing sliding slot（6）, complete blanking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050225.3A CN108098075B (en) | 2016-11-24 | 2016-11-24 | A kind of door closer rack gear plunger mill teeth device and its working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050225.3A CN108098075B (en) | 2016-11-24 | 2016-11-24 | A kind of door closer rack gear plunger mill teeth device and its working method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108098075A true CN108098075A (en) | 2018-06-01 |
| CN108098075B CN108098075B (en) | 2019-07-19 |
Family
ID=62203948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611050225.3A Active CN108098075B (en) | 2016-11-24 | 2016-11-24 | A kind of door closer rack gear plunger mill teeth device and its working method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108098075B (en) |
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| CN203792114U (en) * | 2014-04-21 | 2014-08-27 | 广东和氏自动化技术有限公司 | Crank shaft offsetting searching and positioning machine |
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| CN105499711A (en) * | 2016-01-08 | 2016-04-20 | 三峡大学 | Symmetrical cylindrical rack and gear slotting machining device and method |
| CN206643455U (en) * | 2016-11-24 | 2017-11-17 | 丹阳市华清机车配件有限公司 | A kind of product qualification rate higher door closer rack plunger mill teeth device |
| CN206643457U (en) * | 2016-11-24 | 2017-11-17 | 丹阳市华清机车配件有限公司 | A kind of door closer rack plunger mill teeth device |
| CN206643456U (en) * | 2016-11-24 | 2017-11-17 | 丹阳市华清机车配件有限公司 | A kind of easily operated door closer rack plunger mill teeth device |
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2016
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7004826B2 (en) * | 2004-03-01 | 2006-02-28 | Wolfgang Linnenbrink | Device for smoothing gear wheels |
| CN201427212Y (en) * | 2009-06-19 | 2010-03-24 | 天津市精诚机床制造有限公司 | Triaxial numerical control gear shaft chamfering machine suitable for production line |
| CN202910666U (en) * | 2012-11-06 | 2013-05-01 | 宁波精益飞达轴业有限公司 | Eccentric shaft grinding device |
| CN203356781U (en) * | 2013-07-09 | 2013-12-25 | 缙云县汽缸体厂 | Internal thread double-end mill |
| CN203792114U (en) * | 2014-04-21 | 2014-08-27 | 广东和氏自动化技术有限公司 | Crank shaft offsetting searching and positioning machine |
| CN203917941U (en) * | 2014-06-24 | 2014-11-05 | 时硕科技(无锡)有限公司 | The automatic feeding, discharge device of lathe |
| CN105499711A (en) * | 2016-01-08 | 2016-04-20 | 三峡大学 | Symmetrical cylindrical rack and gear slotting machining device and method |
| CN206643455U (en) * | 2016-11-24 | 2017-11-17 | 丹阳市华清机车配件有限公司 | A kind of product qualification rate higher door closer rack plunger mill teeth device |
| CN206643457U (en) * | 2016-11-24 | 2017-11-17 | 丹阳市华清机车配件有限公司 | A kind of door closer rack plunger mill teeth device |
| CN206643456U (en) * | 2016-11-24 | 2017-11-17 | 丹阳市华清机车配件有限公司 | A kind of easily operated door closer rack plunger mill teeth device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108098075B (en) | 2019-07-19 |
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