CN209664478U - A kind of automatic loading and unloading device on gear shapping machine - Google Patents
A kind of automatic loading and unloading device on gear shapping machine Download PDFInfo
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- CN209664478U CN209664478U CN201920521687.1U CN201920521687U CN209664478U CN 209664478 U CN209664478 U CN 209664478U CN 201920521687 U CN201920521687 U CN 201920521687U CN 209664478 U CN209664478 U CN 209664478U
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- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims description 2
- 238000001727 in vivo Methods 0.000 claims description 2
- 238000010862 gear shaping Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Abstract
One end of the automatic loading and unloading device that the utility model discloses a kind of on gear shapping machine, including pedestal, the pedestal is equipped with main shaft, and the other end is provided with support, is fixed with rotating device on the support；The position that clamping device is matched on the support is equipped with lifting device, and the lifting device rises or falls clamping device.The utility model realizes the mechanical automation of workpiece pick-and-place, saves manpower, improves safety, also improves working efficiency.
Description
Technical field
The utility model belongs to the automation equipment field of gear shapping machine, and in particular to a kind of automatic on gear shapping machine
Blanking device.
Background technique
Gear shapping machine is a kind of Metal Cutting Machine Tool, is using pinion cutter by straight-tooth and helical teeth cylinder outside generating Jia Gong Nei ﹑
The gear cutting machine of gear and other toothed members.When carrying out Gear Shaping, need manually to be placed on blank workpiece slotting
On the main shaft of tooth machine, and blank workpiece is clamped by the clamping element on main shaft, gear shaping could be carried out to it, after the processing is completed,
Manually finished parts are taken out again, and are reentered into blank workpiece.It is this by way of manually placing blank workpiece, there is one
Fixed security risk, meanwhile, whole working efficiency is lower.
Summary of the invention
The utility model will solve the blank workpiece on existing gear shapping machine and need artificial placement, cause security risk big,
Ineffective technical problem.
The technical scheme in the invention for solving the above technical problem are as follows:
The utility model discloses a kind of automatic loading and unloading device on gear shapping machine, including pedestal, and the one of the pedestal
End is equipped with main shaft, and the other end is provided with support, rotating device is fixed on the support, and the rotating device includes gear ring, tooth
Enclosing bracing ring, gear ring dustproof cover and gear ring fixed block, the gear ring bracing ring includes side ring, the inner hole that side ring top surface is arranged in
Diameter is less than the support ring of side ring internal orifice dimension, and accommodating space, tooth are formd between the lower surface of the support ring and the inner wall of side ring
Circle is in accommodating space, and the gear ring fixed block is mounted on the upper surface of gear ring, and gear ring fixed block is the section of " 7 " font
Revolving body made of center line rotation around gear ring bracing ring, the section of " 7 " font includes transverse slat and side plate, the transverse slat
It is pressed in support ring, the outer wall of side plate is fitted in the inner wall of support ring, and the lower end of side plate is fixed on the upper surface of gear ring, described
Arc groove and lower arc groove are respectively equipped between transverse slat and the binding face of support ring, between the upper arc groove and lower arc groove
Equipped with several steel balls；The gear ring meshing gear, gear are fixed in the shaft of speed reducer；The gear ring fixed block is equipped with two
Group clamping device, two groups of clamping devices are to be distributed centered on the axis of gear ring in 180 degree, wherein one group of clamping device corresponding
Fit over the top of main shaft；The position that clamping device is matched on the support is equipped with lifting device, and the lifting device to clamp
Mechanism rises or falls.
The lower end of the gear ring dustproof cover is embedded in the caulking groove of gear ring bracing ring upper surface, and gear ring dustproof cover is set in
The outer peripheral surface of gear ring fixed block has gap between the gear ring dustproof cover and gear ring fixed block.
The outer wall of the side plate is inclined surface structure.
The clamping device includes pedestal and the pedestal plate that pedestal lower end is arranged in, and it is solid that the pedestal plate is fixed on gear ring
Determine on block, the two sides of the pedestal are provided with left clamp hand and right clamp hand, are fixed on the left clamp hand and move to left lever, on right clamp hand
It is fixed with right move lever, described move to left is equipped with rack gear in lever and right move lever, moves to left lever, right move lever is plugged in respectively
The intracorporal upper translation hole of seat, lower translation hole, the position in vivo between upper translation hole and lower translation hole of being present are equipped with sliding tooth
Wheel, the driving gear with move to left lever, the rack gear in right move lever engages, the driving gear is also nibbled with a flexible rack bar
It closes, the flexible rack bar is from top to bottom plugged in the jack of pedestal, and spring is equipped in jack, and spring is for expansion teeth
Bar has elastic force；It is moved by pressing flexible rack bar along jack azimuth axis, so that synchronous drive moves to left lever, moves right
Bar is along opposite or opposite reverse movement.
Part tray is equipped on the inside of the left clamp hand, right clamp hand.
The outer end for moving to left lever is plugged in the right pilot hole of right clamp hand, and the outer end of the right move lever is plugged in a left side
In the left pilot hole of clamp hand.
It is set on the pedestal plate there are two guiding axis, two guiding axis are plugged in respectively in two guide holes of pedestal, and two
A guiding axis is respectively at the both sides of flexible rack bar using flexible rack bar as center line.
The lifting device includes fixed main board on the support, the lifting cylinder for being fixed on main board upper end, fixation
Main board lower end lifting bracket and be fixed on the lift block docked with lifting bracket of pedestal upper end, the lifting bracket
On be fixed with extruding cylinder, the stroke lever Corresponding matching for squeezing cylinder stretches the upper end of rack bar；The lifting bracket
Lower end be equipped with convex block towards outside, the convex block is in the lower section of lift block always；The stroke lever of the lifting cylinder is fixed
It is connected on lifting bracket, guiding mechanism is equipped between the lifting bracket and main board, the guiding mechanism, which includes two, leads
To axis, the guiding axis is plugged in linear bearing, and linear bearing is fixed on lifting bracket.
The position of the convex block of the lifting bracket is equipped with arc gap, the circular arc rail of the arc gap and lift block exterior angle
Mark is consistent.
The beneficial effects of the utility model are:
Compared with prior art, the automatic loading and unloading device being used on gear shapping machine of the utility model, realizes workpiece and takes
The mechanical automation put, saves manpower, improves safety, also improves working efficiency.
Detailed description of the invention
Fig. 1 is perspective view of the utility model for the automatic loading and unloading device on gear shapping machine；
Fig. 2 is front view of the utility model for the automatic loading and unloading device on gear shapping machine；
Fig. 3 is that clamping device of the utility model for the automatic loading and unloading device on gear shapping machine is assembled in lifting device
Perspective view together；
Fig. 4 is the utility model for the clamping device of the automatic loading and unloading device on gear shapping machine and the solid of lifting device
Exploded view；
Fig. 5 is perspective view of the utility model for the lifting bracket of the automatic loading and unloading device on gear shapping machine；
Fig. 6 is structure sectional view of the utility model for the rotating device of the automatic loading and unloading device on gear shapping machine；
Fig. 7 is stereogram exploded view of the utility model for the rotating device of the automatic loading and unloading device on gear shapping machine；
Fig. 8 is top view of the utility model for the clamping hand of the automatic loading and unloading device on gear shapping machine；
Fig. 9 is the F-F structure sectional view of Fig. 6；
Figure 10 is the G-G structure sectional view of Fig. 6；
Figure 11 is front view of the utility model for the clamping hand of the automatic loading and unloading device on gear shapping machine；
Figure 12 is the C-C structure sectional view of Fig. 9.
Specific embodiment
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments:
Fig. 1 to Figure 12 is please referred to, the utility model provides a kind of automatic loading and unloading device on gear shapping machine, including base
One end of seat 1, the pedestal 1 is equipped with main shaft 2, and the other end is provided with support 3, rotating device 4, institute are fixed on the support 3
Stating rotating device 4 includes gear ring 5, gear ring bracing ring 6, gear ring dustproof cover 7 and gear ring fixed block 8, and the gear ring bracing ring 6 wraps
Support ring 10 of the internal orifice dimension less than 9 internal orifice dimension of side ring for including side ring 9,9 top surface of side ring being set, the lower surface of the support ring 10
Accommodating space 11 is formd between the inner wall of side ring 9, gear ring 5 is in accommodating space 11, and the gear ring fixed block 8 is mounted on
The upper surface of gear ring 5, and gear ring fixed block 8 is to turn round made of center line rotation of the section of " 7 " font around gear ring bracing ring 6
Body, the section of " 7 " font include transverse slat 12 and side plate 13, and the transverse slat 12 is pressed in support ring 10, the outer wall of side plate 13
It is fitted in the inner wall of support ring 10, and the lower end of side plate 13 is fixed on the upper surface of gear ring 5, the transverse slat 12 and support ring 10
Be respectively equipped with arc groove (being not drawn into figure) and lower arc groove 15 between binding face, the upper arc groove (being not drawn into figure) with
Several steel balls 16 are equipped between lower arc groove 15；5 meshing gear 17 of gear ring, gear 17 are fixed on the shaft of speed reducer 18
On；The gear ring fixed block 8 is equipped with two groups of clamping devices 19, and two groups of clamping devices 19, which are centered on the axis of gear ring 5, is in
180 degree distribution, wherein one group of 19 Corresponding matching of clamping device is in the top of main shaft 2；Clamping device 19 is matched on the support 3
Position is equipped with lifting device 20, and the lifting device 20 rises or falls clamping device 19.
Locating slot 49 is equipped in the lower arc groove 15, locating slot 49 is used for the positioning of steel ball 16, so that two groups of folders
Hold the positioning in place of mechanism 19.
The lower end of the gear ring dustproof cover 7 is embedded in the caulking groove 21 of 6 upper surface of gear ring bracing ring, and gear ring dustproof cover 7
It is set in the outer peripheral surface of gear ring fixed block 8, there is gap between the gear ring dustproof cover 7 and gear ring fixed block 8.
The outer wall of the side plate 13 is inclined surface structure.
The clamping device 19 includes pedestal 23 and the pedestal plate 24 that 23 lower end of pedestal is arranged in, and the pedestal plate 24 is solid
It is scheduled on gear ring fixed block 8, the two sides of the pedestal 23 are provided with left clamp hand 25 and right clamp hand 26, fix on the left clamp hand 25
Move to left lever 27, be fixed with right move lever 28 on right clamp hand 26, it is described move to left be all provided in lever 27 and right move lever 28 it is with teeth
Item 29, moves to left lever 27, right move lever 28 is plugged in upper translation hole 30, lower translation hole 31 in pedestal 23 respectively, in pedestal 23
The interior position between upper translation hole 30 and lower translation hole 31 is equipped with driving gear 51, the driving gear 51 and moves to left lever
27, the rack gear 29 in right move lever 28 engages, and the driving gear 51 is also engaged with a flexible rack bar 32, the flexible rack gear
Bar 32 is from top to bottom plugged in the jack 33 of pedestal 23, and spring 34 is equipped in jack 33, and spring 34 is for the rack gear that stretches
Bar 32 has elastic force；Moved by pressing flexible rack bar 32 along 33 azimuth axis of jack, thus synchronous drive move to left lever 27,
Right move lever 28 is along opposite or opposite reverse movement.
The left clamp hand 25, right clamp hand 26 inside be equipped with part tray 35.Part tray 35 is rubber material, can be with
Workpiece is clamped well.
The outer end for moving to left lever 27 is plugged in the right pilot hole 36 of right clamp hand 26, the outer end of the right move lever 28
It is plugged in the left pilot hole 37 of left clamp hand 25.
It is set on the pedestal plate 24 there are two guiding axis 38, two guiding axis 38 are plugged in two guide holes of pedestal 23 respectively
In 39, and two guiding axis 38 are respectively at the both sides of flexible rack bar 32 to stretch rack bar 32 for center line.
The lifting device 20 includes the main board 40 being fixed on support 3, the promotion gas for being fixed on 40 upper end of main board
Cylinder 41, the lifting bracket 42 for being fixed on 40 lower end of main board and it is fixed on mentioning with what lifting bracket 42 docked for 23 upper end of pedestal
Block 43 is risen, is fixed on the lifting bracket 42 and squeezes cylinder 44, the stroke lever Corresponding matching for squeezing cylinder 44 is flexible
The upper end of rack bar 32；The lower end of the lifting bracket 42 is equipped with convex block 45 towards outside, and the convex block 45 is in lift block 43
Lower section；The stroke lever of the lifting cylinder 41 is fixedly connected on lifting bracket 42, the lifting bracket 42 and main board 40
Between be equipped with guiding mechanism, the guiding mechanism includes two guiding axis 50, and the guiding axis 50 is plugged in linear bearing 46,
Linear bearing 46 is fixed on lifting bracket 42.
The position of the convex block 45 of the lifting bracket 42 is equipped with arc gap 47, the arc gap 47 with outside lift block 43
The arc track at angle is consistent.
It makes an explanation below to the working principle for the automatic loading and unloading device on gear shapping machine of the utility model:
The automatic loading and unloading device being used on gear shapping machine of the utility model, integral installation is before the lathe bed 48 of gear shapping machine
Side, and main shaft 2 is made to be in the lower section of gear shaping device.
In the initial state, first group of clamping device 19 is in the top of main shaft 2, second group then with first group of clamping device
19 are distributed in 180 degree, and second group of clamping device 19 is in the top of work stage and workpiece is placed on work when processing for the first time
On part platform, at this point, squeezing cylinder 44 squeezes flexible rack bar 32, flexible rack bar 32 is moved down, so that driving gear 51 is driven, after
And drive moves to left lever 27, right move lever 28 moves in the opposite direction, it may be assumed that left clamp hand 25, right clamp hand 26 are opened, and then, are mentioned
Rising cylinder 41 drives lifting bracket 42 to move down, and the convex block 45 on lifting bracket 42 moves down and leaves lift block 43, so that mentioning
Ascending branch frame 42 loses the supporting force to lift block 43, in this way, entire clamping device 19 is declined by self gravitation effect, thus
So that the decline of left clamp hand 25, right clamp hand 26 is in the two sides of workpiece, left clamp hand 25 surrounds the region formed with right clamp hand 26 jointly
It is consistent with the shape of workpiece, so as to clamp workpiece, then, squeezes cylinder 44, squeezes the synchronous rising of cylinder, stretch rack bar
32 lose the squeezing action power for squeezing cylinder 44, and by the effect of spring 34, flexible rack bar 32 is moved up, so that driving gear 51
It reversely rotates, so, it is mobile towards opposite direction to move to left lever 27, right move lever 28, so that workpiece is clamped, workpiece to be clamped
Afterwards, lifting cylinder 41 drives lifting bracket 42 to move up, and convex block 45 holds up lift block 43 and makes the opposite pedestal of entire clamping device 19
Plate 24 rises, and then workpiece is moved up, and then, speed reducer 18 drives gear ring 5 to rotate, pass through electricity with moving gear 17, gear 17
Road control, so that gear ring 5 rotates 180 degree, clamping device 19 is unexpected caused by rotary collision convex block 45 with gear ring 5 in order to prevent
It happens, especially increases arc gap 47 in the position of convex block 45；Since gear ring fixed block 8 and gear ring 5 are connected and fixed, and
The transverse slat 12 of gear ring fixed block 8 is pressed in support ring 10, and several steel balls 16 are equipped between transverse slat 12 and support ring 10, this raising
Smoothness when gear ring fixed block 8 is rotated with gear ring 5, in addition, the outer wall of side plate 13 is fitted in the inner wall of support ring 10, and two
The face of person's fitting is inclined surface, this improves stability when gear ring fixed block 8 is rotated with gear ring 5, when making clamped workpiece
When rotation to the top of main shaft 2, then lifting cylinder 41 declines, so that workpiece is placed on main shaft 2, then squeezes cylinder 44 and works,
Flexible rack bar 32 is squeezed, so that drive moves to left lever 27, right move lever 28 moves in the opposite direction, left clamp hand 25, right folder
Hand 26 is opened, so that workpiece is placed on main shaft 2, finally, lifting cylinder 41, extruding cylinder 44 reset and rise, makes clamping machine
Structure 19 is far from workpiece, to complete a process.
The automatic loading and unloading device being used on gear shapping machine provided by the utility model embodiment has been carried out in detail above
It introduces, specific case used herein is expounded the principles of the present invention and embodiment, above embodiments
Illustrate to be merely used to help understand the revealed technical solution of the utility model；At the same time, for those skilled in the art,
Based on the idea of the present invention, there will be changes in the specific implementation manner and application range, in conclusion this explanation
Book content should not be construed as the limitation of the utility model.
Claims (9)
1. a kind of automatic loading and unloading device on gear shapping machine, it is characterised in that: including pedestal, one end of the pedestal is equipped with
Main shaft, the other end are provided with support, and rotating device is fixed on the support, and the rotating device includes gear ring, gear ring support
Circle, gear ring dustproof cover and gear ring fixed block, the gear ring bracing ring includes side ring, the internal orifice dimension that is arranged in side ring top surface is less than
The support ring of side ring internal orifice dimension, forms accommodating space between the lower surface of the support ring and the inner wall of side ring, gear ring is in
In accommodating space, the gear ring fixed block is mounted on the upper surface of gear ring, and gear ring fixed block is the section of " 7 " font around gear ring
Revolving body made of the center line rotation of bracing ring, the section of " 7 " font includes transverse slat and side plate, and the transverse slat is pressed in branch
On pushing out ring, the outer wall of side plate is fitted in the inner wall of support ring, and the lower end of side plate is fixed on the upper surface of gear ring, the transverse slat with
Arc groove and lower arc groove are respectively equipped between the binding face of support ring, if being equipped between the upper arc groove and lower arc groove
Dry steel ball；The gear ring meshing gear, gear are fixed in the shaft of speed reducer；The gear ring fixed block is equipped with two groups of clampings
Mechanism, two groups of clamping devices are to be distributed centered on the axis of gear ring in 180 degree, wherein one group of clamping device Corresponding matching is in master
The top of axis；The position that clamping device is matched on the support is equipped with lifting device, and the lifting device makes on clamping device
It rises or declines.
2. a kind of automatic loading and unloading device on gear shapping machine according to claim 1, it is characterised in that: the gear ring
The lower end of dustproof cover is embedded in the caulking groove of gear ring bracing ring upper surface, and gear ring dustproof cover is set in the periphery of gear ring fixed block
Face has gap between the gear ring dustproof cover and gear ring fixed block.
3. a kind of automatic loading and unloading device on gear shapping machine according to claim 1 or 2, it is characterised in that: described
The outer wall of side plate is inclined surface structure.
4. a kind of automatic loading and unloading device on gear shapping machine according to claim 1, it is characterised in that: the clamping
Mechanism includes pedestal and the pedestal plate that pedestal lower end is arranged in, and the pedestal plate is fixed on gear ring fixed block, the pedestal
Two sides be provided with left clamp hand and right clamp hand, be fixed on the left clamp hand and move to left lever, be fixed with right move lever on right clamp hand,
Described move to left is equipped with rack gear in lever and right move lever, moves to left lever, right move lever and is plugged in the intracorporal upper translation of seat respectively
Hole, lower translation hole, the position in vivo between upper translation hole and lower translation hole of being present are equipped with driving gear, the driving gear
With move to left lever, the rack gear in right move lever engages, the driving gear is also engaged with a flexible rack bar, the flexible rack gear
Bar is from top to bottom plugged in the jack of pedestal, and spring is equipped in jack, and spring has elastic force for flexible rack bar；It is logical
It crosses the flexible rack bar of pressing to move along jack azimuth axis, so that synchronous drive moves to left lever, right move lever along opposite or opposite
Reverse movement.
5. a kind of automatic loading and unloading device on gear shapping machine according to claim 4, it is characterised in that: the left folder
Part tray is equipped on the inside of hand, right clamp hand.
6. a kind of automatic loading and unloading device on gear shapping machine according to claim 4, it is characterised in that: described to move to left
The outer end of lever is plugged in the right pilot hole of right clamp hand, and the outer end of the right move lever is plugged in the left pilot hole of left clamp hand
It is interior.
7. a kind of automatic loading and unloading device on gear shapping machine according to claim 4, it is characterised in that: the pedestal
Guiding axis there are two setting on plate, two guiding axis are plugged in respectively in two guide holes of pedestal, and two guiding axis are with expansion teeth
Bar is the both sides that center line is respectively at flexible rack bar.
8. a kind of automatic loading and unloading device on gear shapping machine according to claim 4, it is characterised in that: the promotion
Device includes fixed main board on the support, is fixed on main board upper end lifting cylinder is fixed on mentioning for main board lower end
Ascending branch frame and the lift block docked with lifting bracket for being fixed on pedestal upper end are fixed with extruding gas on the lifting bracket
Cylinder, the upper end of the flexible rack bar of the stroke lever Corresponding matching for squeezing cylinder；The lower end of the lifting bracket is set towards outside
There is convex block, the convex block is in the lower section of lift block always；The stroke lever of the lifting cylinder is fixedly connected on lifting bracket,
Guiding mechanism is equipped between the lifting bracket and main board, the guiding mechanism includes two guiding axis, and the guiding axis is inserted
It is located in linear bearing, linear bearing is fixed on lifting bracket.
9. a kind of automatic loading and unloading device on gear shapping machine according to claim 8, it is characterised in that: the promotion
The position of the convex block of bracket is equipped with arc gap, and the arc gap is consistent with the arc track at lift block exterior angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920521687.1U CN209664478U (en) | 2019-04-17 | 2019-04-17 | A kind of automatic loading and unloading device on gear shapping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920521687.1U CN209664478U (en) | 2019-04-17 | 2019-04-17 | A kind of automatic loading and unloading device on gear shapping machine |
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| Publication Number | Publication Date |
|---|---|
| CN209664478U true CN209664478U (en) | 2019-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920521687.1U Active CN209664478U (en) | 2019-04-17 | 2019-04-17 | A kind of automatic loading and unloading device on gear shapping machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113263231A (en) * | 2021-06-07 | 2021-08-17 | 浙江陀曼精密机械有限公司 | Automatic feeding and discharging preset mechanism with gear hobbing requirement on specific starting position of gear part |
| CN113443419A (en) * | 2020-03-25 | 2021-09-28 | 本田技研工业株式会社 | Work supply and discharge device |
-
2019
- 2019-04-17 CN CN201920521687.1U patent/CN209664478U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113443419A (en) * | 2020-03-25 | 2021-09-28 | 本田技研工业株式会社 | Work supply and discharge device |
| CN113263231A (en) * | 2021-06-07 | 2021-08-17 | 浙江陀曼精密机械有限公司 | Automatic feeding and discharging preset mechanism with gear hobbing requirement on specific starting position of gear part |
| CN113263231B (en) * | 2021-06-07 | 2022-02-18 | 浙江陀曼智能科技股份有限公司 | Automatic feeding and discharging preset mechanism with gear hobbing requirement on specific starting position of gear part |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 318050 xialiang village, Jinqing Town, Luqiao District, Taizhou City, Zhejiang Province Patentee after: ZHEJIANG LAOLUNSI MACHINE TOOL Co.,Ltd. Address before: 318059 Ruquan village, Linjia village, Jinqing Town, Luqiao District, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG LAOLUNSI MACHINE TOOL Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |