CN206747877U - A kind of Geneva mechanism and automatic soldering device - Google Patents
A kind of Geneva mechanism and automatic soldering device Download PDFInfo
- Publication number
- CN206747877U CN206747877U CN201720406433.6U CN201720406433U CN206747877U CN 206747877 U CN206747877 U CN 206747877U CN 201720406433 U CN201720406433 U CN 201720406433U CN 206747877 U CN206747877 U CN 206747877U
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- driver plate
- finger
- sheave
- geneva mechanism
- radial slot
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Abstract
The utility model discloses a kind of Geneva mechanism, including the driver plate as driving link and the sheave as driven member, finger is connected with the driver plate, annular is uniformly arranged multiple arcs of recesses grooves being equipped with convex Locking arc that is being set on the driver plate in the outer peripheral sidewall of the sheave, and radial slot is provided between the two neighboring arcs of recesses groove；The finger face is arranged on the perpendicular bisector between the breach two-end-point set in the convex Locking arc, and the radial slot medial surface is arranged to plane close to the part of the bottom land, it is characterised in that the outer part of the radial slot is arranged to the cambered surface of indent.Automatic soldering device drives workpiece to be rotated by Geneva mechanism so that bonding machine welds to the not homonymy of workpiece.Above-mentioned Geneva mechanism can effectively reduce caused shock and vibration and noise in Geneva mechanism motion process so that when automatic soldering device carries out welding job, motion is more reliable and more stable, and welding precision is higher.
Description
Technical field
It the utility model is related to a kind of welding jig；More particularly to a kind of Geneva mechanism and automatic soldering device.
Background technology
The one-way intermittent motion mechanism that Geneva mechanism is made up of sheave and straight pin, also known as Maltese cross.Its normal quilt
For by the continuous rotation of driving link be converted into driven member with the unidirectional periodic rotary rested.Geneva mechanism is turned by active
Disk, driven sheave and frame composition.Geneva mechanism is simple in construction, and easy processing, reliable operation, corner is accurate, and mechanical efficiency is high.But
It is that its corner can not be too small, acceleration of the sheave in starting and stopping is big, there is an impact, and the increase with rotating speed or sheave slot number
Reduce and aggravate, therefore should not be used at a high speed, it is be used for realizing the indexing motion for being not required to often adjust indexable angle more.
Automatic soldering device includes a power input device, and power input device is connected by decelerator and Geneva mechanism
Connecing, continuous motion is changed into intermittent exercise using Geneva mechanism so that the chuck on workbench drives workpiece to be rotated,
Bonding machine welds to the workpiece installed on chuck.When self-circulating water cools down alloy electric machine housing automatic welding, work
A chuck for being used to install housing is provided with platform, drives chuck to be rotated using Geneva mechanism so that weldering
The weld seam cooled down to self-circulating water between alloy electric machine housing that picks carries out melting welding and after built-up welding, fixture carries out 90 degree of rotation
Turn, then proceed to repeat welding action, until welding is completed.But in welding process, because the straight pin of Geneva mechanism enters
Deep trouth or the moment for exiting deep trouth, the peak value of angular acceleration is higher, larger soft impulse be present, and this soft impulse easily draws
Noise and vibration is played, and then reduces the running speed and positioning precision of workbench.
The A of China patent CN 1,055 26328 disclose a kind of Geneva mechanism, including one as driving link driver plate and with
The driver plate coordinates the sheave as driven member, it is characterised in that：The driver plate includes a plate, is vertically installed in the plate
On finger, the finger uniformly enclosed provided with least two along driver plate center, each finger center to driver plate center
Apart from identical；The sheave includes a rotation card, and the radial equipartition of the rotation card has dispersion shape driving groove, the transmission
Groove is provided with least three, and the driver plate is rotated around its center, drives the finger to be connected in the driving groove, drives
Move, limit the sheave around its central rotation；The driving groove is made up of a straightway and segmental arc opening, the segmental arc
Opening bore is more than the straightway bore, and Locking arc, the lock are formed between the adjacent notch side of the adjacent driving groove
Circumscribed inscribed circle diameter between diameter of a circle and the finger that only arc is formed is identical；When any finger is transferred to straightway,
The finger being transferred to completely defines the position of sheave；It is another adjacent on driver plate to dial when a wherein finger produces straightway
Pin is transferred to adjacent another driving groove, adjacent two fingers and two adjacent driving grooves, common to limit completely
The rotation of sheave.
Above-mentioned Geneva mechanism, can reduce shock and vibration and noise caused by sheave start-stop, but there are still with
Lower defect：1st, driving groove is made up of a straightway and segmental arc opening, and the segmental arc opening bore is more than the straightway mouth
Footpath, finger can produce outside extruding force in into and out driving groove to driving groove side, and two at the notch of driving groove
Relative inner causes the bearing capacity of sheave to reduce, when load is larger, easily make it that the two of driving groove are lateral towards outside sweep
Direction away from other side is bent, and causes Geneva mechanism to fail.2nd, finger departs from from driving groove to next time into driving groove
In time interval, do not ensure that sheave is off motion, such that finger is when entering driving groove next time, can not
It is accurate to enter, vibration, noise can be produced or even impacted, cause Geneva mechanism motion unstable.
Utility model content
For above-mentioned the deficiencies in the prior art, technical problem to be solved in the utility model is：How a kind of energy is provided
The Geneva mechanism and automatic soldering device of caused impact in enough more preferable reducing mechanism runnings, vibration or noise.
In order to solve the above-mentioned technical problem, the utility model employs following technical scheme：
A kind of Geneva mechanism, including driver plate as driving link and be equipped with the driver plate and as the groove of driven member
Take turns, be connected with finger on the driver plate, convex Locking arc, the periphery of the sheave are provided with the outer peripheral sidewall of the driver plate
Annular is uniformly arranged multiple arcs of recesses grooves being equipped with the convex Locking arc, the two neighboring arcs of recesses groove in side wall
Between be provided with and be located at the radial slot of the sheave in the radial direction with merging with the finger；It is provided with the convex Locking arc
Breach, breach described in the finger face are arranged on the perpendicular bisector between the breach two-end-point, the radial slot medial surface
Plane is arranged to close to the part of the bottom land, it is characterised in that the outer part of the radial slot is arranged to the cambered surface of indent.
In the technical program, Geneva mechanism includes being equipped with the driver plate as the driver plate of driving link and as driven
The sheave of part, intermittent exercise output can be converted into by continuous, meet the requirement of more production technologies.Set on driver plate
There is finger to impart power to sheave so that sheave moves with the radial slot routing motion set on sheave.Driver plate periphery
Convex Locking arc is provided with side wall, the arcs of recesses groove being equipped with convex Locking arc, convex locking are provided with sheave outer peripheral sidewall
Arc, which is equipped with arcs of recesses groove, can ensure the static of sheave, ensure the reliability of whole mechanism kinematic so that under finger
It once can accurately enter radial slot, avoid the failure of motion.Set in convex Locking arc it is jagged, between breach two-end-point
The perpendicular bisector of line is overlapping with the center of circle of the driver plate, rotation of the convex Locking arc to sheave can be avoided to produce spacing, ensure groove
Take turns the reliability rotated.Radial slot medial surface is arranged to plane close to the part of the bottom land, and outer part is arranged to indent
Cambered surface, set cambered surface to reduce finger when entering radial slot to shock and vibration and noise caused by radial slot side,
Improve the reliability of whole device motion.Cambered surface can use the design method of cam profile to be designed, and establish mathematical modulo
Type draws cambered surface, avoids, because cambered surface radian is excessive, causing Geneva mechanism to invert, and preferably ensures the reliability of motion.
As optimization, the plane at the cambered surface intersection location with being provided with fillet surface.
So, it is provided with fillet surface at plane and cambered surface intersection location, it is ensured that finger is put down with radial slot groove face
It is sliding to touch, ensure the steady of motion, reduce finger contacted with radial slot groove face caused by vibration and noise.
As optimization, the finger is arranged to cylinder, the axis of the cylinder perpendicular to plane where the driver plate,
The radial slot bottom surface is arranged to semicircle cambered surface, and the cylinder diameter is consistent with the semicircle cambered surface diameter.
So, finger is arranged to cylinder, convenient processing.Radial slot bottom surface is arranged to semicircle cambered surface, and cylinder is straight
Footpath is consistent with semicircle cambered surface diameter, and cylindrical sides can be caused preferably to be bonded with semicircle cambered surface, reduces mechanism kinematic process
In caused vibration so that the motion of Geneva mechanism is more steady reliable.
As optimization, the finger is fixedly connected on the driver plate by pivoted arm, and the pivoted arm is arranged on the sheave
Lower section.
So, finger is fixedly connected on the driver plate by pivoted arm, can ensure the feelings of Geneva mechanism proper motion
Under condition, reduce the quality of Geneva mechanism, save material.Pivoted arm is arranged on below sheave, can avoid rotation of the pivoted arm to sheave
Limitation is produced, Geneva mechanism can be moved preferably.
As optimization, the pivoted arm is arranged to tabular component.
So, pivoted arm is arranged to tabular component, can more easily install finger, while tabular component cost is low, processing
It is convenient.
As optimization, the perpendicular bisector weight between center line and the breach two-end-point of the pivoted arm along local width direction
Close.
So, center line of the pivoted arm along local width direction overlaps with the perpendicular bisector between breach two-end-point, whole driver plate
It is symmetrical arranged along perpendicular bisector so that the motion of Geneva mechanism is more steady reliable, further reduces in Geneva mechanism motion process
Caused vibration and noise.
As optimization, the length of the pivoted arm is consistent with the radial direction slot length.
So, finger can be contacted with bottom land so that sheave rotation process is more steady, while can preferably subtract
The space that few whole Geneva mechanism takes.
As optimization, the finger sets one or two.
So, the run duration and dwell time of driver plate intermittent exercise can be adjusted, meets more plant equipment to groove
Take turns the requirement of mechanism.
A kind of automatic soldering device, including power input device, workbench, the bonding machine for being arranged on workbench side and
It is arranged on and is used for the installing mechanism for installing workpiece to be welded on the workbench, in addition to above-mentioned Geneva mechanism, the power is defeated
The clutch end for entering device is connected with the driver plate and drives the driver plate to do continuity rotation, and the driver plate drives the groove
Wheel does intermittent rotation and outputed power to drive the installing mechanism on the workbench to do intermittent rotary motion；The peace
Mounting mechanism when rotating the workpiece being fixedly mounted on the installing mechanism can be driven to be rotated so that bonding machine is carried out to workpiece
Welding.
So, automatic soldering device includes workbench, and workbench side is provided with bonding machine, and power input device output is dynamic
Power drives driver plate to do continuity gyration, and driver plate moves sheave and does intermittent rotation, and then imparts power on workbench
Installing mechanism so that installing mechanism is synchronized with the movement and stopped with sheave.Workpiece is arranged on installing mechanism, when bonding machine is to workpiece
Side welding complete when, sheave drive installing mechanism rotation so that the positive butt welding machine of workpiece opposite side, bonding machine just to workpiece not
Weld side is welded.The intermittent exercise of workpiece is realized using Geneva mechanism, in workpiece stop motion, bonding machine is to workpiece
Side is welded, and after the completion of welding, installing mechanism drives workpiece to be rotated, and bonding machine is that the opposite side of workpiece is welded
Connect so that welding process more succinctly facilitates, and processing site arranges also more rationally, can preferably save needed for welding workpiece
Time, improve welding efficiency.
In order to avoid impact, finger will tangentially should hang down mutually into and out of sheave, i.e. radial slot with pivoted arm in this instantaneous position
Directly.
In summary, this Geneva mechanism can effectively reduce in Geneva mechanism motion process caused shock and vibration and
Noise so that when automatic soldering device carries out welding job, motion is more reliable and more stable, and welding precision is higher.
Brief description of the drawings
Fig. 1 is the structural representation of Geneva mechanism.
Fig. 2 is the structural representation of sheave in Fig. 1.
Fig. 3 is the structural representation after automatic soldering device removal bonding machine.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
During specific implementation：As shown in Fig. 1 ~ Fig. 3, a kind of Geneva mechanism, including the driver plate 1 as driving link and the driver plate
1 is equipped with and as the sheave 2 of driven member, is connected with finger 3 on the driver plate 1, in the outer peripheral sidewall of the driver plate 1
It is provided with convex Locking arc 11, annular has been uniformly arranged in the outer peripheral sidewall of the sheave 2 multiple coordinates with the convex Locking arc 11
The arcs of recesses groove 21 of setting, it is provided between the two neighboring arcs of recesses groove 21 and is located at the sheave 2 with merging with the finger 3
Radial slot 4 in the radial direction；Jagged 12 are set in the convex Locking arc 11, breach 12 described in the face of finger 3 is set
On perpendicular bisector between the two-end-point of breach 12, the medial surface of radial slot 4 is arranged to close to the part of the bottom land 41
Plane 42, the outer part of the radial slot 4 are arranged to the cambered surface 43 of indent.
So, Geneva mechanism includes being equipped with and as the groove of driven member with the driver plate as the driver plate of driving link
Wheel, intermittent exercise output can be converted into by continuous, meet the requirement of more production technologies.Finger is provided with driver plate
Sheave can be imparted power to so that sheave moves with the radial slot routing motion set on sheave.In driver plate outer peripheral sidewall
Convex Locking arc is provided with, the arcs of recesses groove being equipped with convex Locking arc is provided with sheave outer peripheral sidewall, convex Locking arc coordinates
The static of sheave can be ensured by being arranged in arcs of recesses groove, ensure the reliability of whole mechanism kinematic so that finger next time may be used
Accurately to enter radial slot, the failure of motion is avoided.Jagged, line between breach two-end-point is set in convex Locking arc
Perpendicular bisector is overlapping with the center of circle of the driver plate, rotation of the convex Locking arc to sheave can be avoided to produce spacing, ensure that sheave rotates
Reliability.Radial slot medial surface is arranged to plane close to the part of the bottom land, and outer part is arranged to the cambered surface of indent,
Set cambered surface to reduce finger when entering radial slot to shock and vibration and noise caused by radial slot side, improve whole
The reliability of individual device motion.Cambered surface can use the design method of cam profile to be designed, and founding mathematical models are drawn
Cambered surface, avoid, because cambered surface radian is excessive, causing Geneva mechanism to invert, preferably ensure the reliability of motion.
In present embodiment, the plane 42 at the intersection location of cambered surface 43 with being provided with fillet surface.
So, it is provided with fillet surface at plane and cambered surface intersection location, it is ensured that finger is put down with radial slot groove face
It is sliding to touch, ensure the steady of motion, reduce finger contacted with radial slot groove face caused by vibration and noise.
In present embodiment, the finger 3 is arranged to cylinder, and the axis of the cylinder is perpendicular to the driver plate
1 place plane, the surface of radial slot bottom land 41 are arranged to semicircle cambered surface, the cylinder diameter and the semicircle cambered surface diameter
Unanimously.
So, finger is arranged to cylinder, convenient processing.Radial slot bottom surface is arranged to semicircle cambered surface, and cylinder is straight
Footpath is consistent with semicircle cambered surface diameter, and cylindrical sides can be caused preferably to be bonded with semicircle cambered surface, reduces mechanism kinematic process
In caused vibration so that the motion of Geneva mechanism is more steady reliable.Certainly when it is implemented, the finger could be arranged to
Spheroid, also belong to the enforceable scope of the present apparatus.
In present embodiment, the finger 3 is fixedly connected on the driver plate 1 by pivoted arm 5, and the pivoted arm 5 is set
Put below the sheave 2.
So, finger is fixedly connected on the driver plate by pivoted arm, can ensure the feelings of Geneva mechanism proper motion
Under condition, reduce the quality of Geneva mechanism, save material.Pivoted arm is arranged on below sheave, can avoid rotation of the pivoted arm to sheave
Limitation is produced, Geneva mechanism can be moved preferably.Certainly when it is implemented, the finger and the driver plate can be fixed on rotation
On disk, the enforceable scope of the present apparatus is also belonged to.
In present embodiment, the pivoted arm 5 is arranged to tabular component.
So, pivoted arm is arranged to tabular component, can more easily install finger, while tabular component cost is low, processing
It is convenient.Certainly when it is implemented, the pivoted arm may be configured as rod component, the enforceable scope of the present apparatus is also belonged to.
In present embodiment, center line of the pivoted arm 5 along local width direction and the two-end-point of breach 12 it
Between perpendicular bisector overlap.
So, center line of the pivoted arm along local width direction overlaps with the perpendicular bisector between breach two-end-point, whole driver plate
It is symmetrical arranged along perpendicular bisector so that the motion of Geneva mechanism is more steady reliable, further reduces in Geneva mechanism motion process
Caused vibration and noise.Certainly when it is implemented, the pivoted arm need to be only connected on the breach, this dress is belonged to
Put enforceable scope.
In present embodiment, the length of the pivoted arm 5 is consistent with the length of radial slot 4.
So, finger can be contacted with bottom land so that sheave rotation process is more steady, while can preferably subtract
The space that few whole Geneva mechanism takes.Certainly when it is implemented, the length of the pivoted arm is smaller than the length of the radial slot,
Also belong to the enforceable scope of the present apparatus.
In present embodiment, the finger 3 is provided with one or two.
So, the run duration and dwell time of driver plate intermittent exercise can be adjusted, meets more plant equipment to groove
Take turns the requirement of mechanism.Certainly when it is implemented, the finger may be provided with three, four or multiple, belonging to the present apparatus can
The scope of implementation.
A kind of automatic soldering device, including power input device, workbench, the bonding machine for being arranged on workbench side and
It is arranged on and is used for the installing mechanism 6 for installing workpiece to be welded on the workbench, in addition to above-mentioned Geneva mechanism, the power is defeated
The clutch end for entering device is connected with the driver plate 1 and drives the driver plate 1 to do continuity rotation, and the driver plate 1 drives institute
Sheave 2 is stated to do intermittent rotation and output power to drive the installing mechanism 6 on the workbench to do intermittent rotary motion；
The installing mechanism 6 can drive the workpiece being fixedly mounted on the installing mechanism 6 to be rotated so that bonding machine pair when rotating
Workpiece is welded.
So, automatic soldering device includes workbench, and workbench side is provided with bonding machine, and power input device output is dynamic
Power drives driver plate to do continuity gyration, and driver plate moves sheave and does intermittent rotation, and then imparts power on workbench
Installing mechanism so that installing mechanism is synchronized with the movement and stopped with sheave.Workpiece is arranged on installing mechanism, when bonding machine is to workpiece
Side welding complete when, sheave drive installing mechanism rotation so that the positive butt welding machine of workpiece opposite side, bonding machine just to workpiece not
Weld side is welded.The intermittent exercise of workpiece is realized using Geneva mechanism, in workpiece stop motion, bonding machine is to workpiece
Side is welded, and after the completion of welding, installing mechanism drives workpiece to be rotated, and bonding machine is that the opposite side of workpiece is welded
Connect so that welding process more succinctly facilitates, and processing site arranges also more rationally, can preferably save needed for welding workpiece
Time, improve welding efficiency.
Claims (7)
1. a kind of Geneva mechanism, including the driver plate as driving link（1）With with the driver plate（1）It is equipped with and is used as driven member
Sheave（2）, the driver plate（1）On be connected with finger（3）, the finger（3）For one；The driver plate（1）Periphery
Convex Locking arc is provided with side wall（11）, the sheave（2）Outer peripheral sidewall on annular be uniformly arranged it is multiple with the convex lock
Only arc（11）The arcs of recesses groove being equipped with（21）, the two neighboring arcs of recesses groove（21）Between be provided with and the finger
（3）It is located at the sheave with merging（2）Radial slot in the radial direction（4）；The convex Locking arc（11）Upper setting is jagged
（12）, the finger（3）Breach described in face（12）It is arranged on the breach（12）On perpendicular bisector between two-end-point, the footpath
To groove（4）Medial surface is close to the bottom land（41）Part be arranged to plane（42）, it is characterised in that the radial slot（4）Two
The outer part of side wall is disposed as the cambered surface of indent（43）；
The plane（42）With the cambered surface（43）Fillet surface is provided with intersection location；
The finger（3）Cylinder is arranged to, the axis of the cylinder is perpendicular to the driver plate（1）Place plane, the footpath
To groove bottom land（41）Surface is arranged to semicircle cambered surface, and the cylinder diameter is consistent with the semicircle cambered surface diameter.
2. Geneva mechanism as claimed in claim 1, it is characterised in that the finger（3）Pass through pivoted arm（5）It is fixedly connected on institute
State driver plate（1）On, the pivoted arm（5）It is arranged on the sheave（2）Lower section.
3. Geneva mechanism as claimed in claim 2, it is characterised in that the pivoted arm（5）It is arranged to tabular component.
4. Geneva mechanism as claimed in claim 3, it is characterised in that the pivoted arm（5）Along the center line in local width direction
With the breach（12）The perpendicular bisector of line overlaps between two-end-point.
5. Geneva mechanism as claimed in claim 4, it is characterised in that the pivoted arm（5）Length and the radial slot（4）It is long
Degree is consistent.
6. Geneva mechanism as claimed in claim 2, it is characterised in that the finger（3）It is provided with one or two.
7. a kind of automatic soldering device, including power input device, workbench, the bonding machine for being arranged on workbench side and set
Put and be used for the installing mechanism for installing workpiece to be welded on the workbench（6）, it is characterised in that also include such as claim 1
To the Geneva mechanism described in any one of 6 claims, the clutch end of the power input device and the driver plate（1）Even
Connect and drive the driver plate（1）Do continuity rotation, the driver plate（1）Drive the sheave（2）Do intermittent rotation and will move
Power is exported to drive the installing mechanism on the workbench（6）Do intermittent rotary motion；The installing mechanism（6）Meeting during rotation
Drive is fixedly mounted on the installing mechanism（6）On workpiece rotated so that bonding machine welds to workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720406433.6U CN206747877U (en) | 2017-04-18 | 2017-04-18 | A kind of Geneva mechanism and automatic soldering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720406433.6U CN206747877U (en) | 2017-04-18 | 2017-04-18 | A kind of Geneva mechanism and automatic soldering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206747877U true CN206747877U (en) | 2017-12-15 |
Family
ID=60613029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720406433.6U Expired - Fee Related CN206747877U (en) | 2017-04-18 | 2017-04-18 | A kind of Geneva mechanism and automatic soldering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206747877U (en) |
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| CN108907531A (en) * | 2018-08-10 | 2018-11-30 | 南京皓焜自动化科技有限公司 | A kind of welding bench excellent every noise result |
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| CN108212649A (en) * | 2017-12-26 | 2018-06-29 | 芜湖市恒浩机械制造有限公司 | A kind of indexing type processes oiling station |
| CN108000507A (en) * | 2018-01-04 | 2018-05-08 | 河南科技大学 | A kind of stack robot manipulator fixed angle turn device |
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| CN109732442A (en) * | 2019-02-28 | 2019-05-10 | 山东海帝新能源科技有限公司 | Grinding device is used in a kind of processing of electric automobile lithium battery |
| CN110375963A (en) * | 2019-07-01 | 2019-10-25 | 昆山钧沃光电有限公司 | Electro-optical device and control method are cut in a kind of detection of display screen |
| CN110653486B (en) * | 2019-10-22 | 2022-03-29 | 苏州米氪激光技术服务有限公司 | Small laser engraving machine for cubic column wood block |
| CN110653486A (en) * | 2019-10-22 | 2020-01-07 | 苏州米氪激光技术服务有限公司 | Small laser engraving machine for cubic column wood block |
| CN110953875A (en) * | 2019-12-13 | 2020-04-03 | 重庆科技学院 | Unidirectional anti-rotation driving device of rotary kiln |
| CN110953875B (en) * | 2019-12-13 | 2024-06-11 | 重庆科技学院 | Unidirectional anti-rotation driving device of rotary kiln |
| CN112318354A (en) * | 2020-10-01 | 2021-02-05 | 赵立龙 | Wood processing equipment |
| CN112605543A (en) * | 2020-12-21 | 2021-04-06 | 浙江科技学院 | Laser welding machine multistation weldment work platform |
| CN112780892B (en) * | 2020-12-30 | 2022-11-11 | 佳木斯大学 | Multi-angle teaching equipment with voice prompt for computer |
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| CN115971937A (en) * | 2023-03-09 | 2023-04-18 | 冈田智能(江苏)股份有限公司 | Umbrella-shaped tool magazine and sheave indexing device with buffer positioning function |
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Granted publication date: 20171215 Termination date: 20200418 |