CN106670781B - Valve split collets strip automatic poking fills formula pressure head - Google Patents
Valve split collets strip automatic poking fills formula pressure head Download PDFInfo
- Publication number
- CN106670781B CN106670781B CN201510756128.5A CN201510756128A CN106670781B CN 106670781 B CN106670781 B CN 106670781B CN 201510756128 A CN201510756128 A CN 201510756128A CN 106670781 B CN106670781 B CN 106670781B
- Authority
- CN
- China
- Prior art keywords
- pressure head
- split collets
- valve split
- head body
- plunger tip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/042—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts specially adapted for combustion engines
- B23P19/045—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts specially adapted for combustion engines for assembling valve cotters and retainers of engine valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automatic Assembly (AREA)
Abstract
The invention belongs to automobile engine manufacturing technology field, specifically a kind of valve split collets strip pulls out dress formula pressure head automatically.Including plunger tip, pull out set, permanent magnet, spring, paddle, pressure head body and driving device, wherein pressure head body is hollow structure, the upper end of the pressure head body is connect with the substrate of locking plate press-loading machine, lower end is equipped with multiple permanent magnets, the permanent magnet has the cotter seat of valve split collets for magnetic, set and the plunger tip of pulling out successively is inserted in from outside to inside in the cavity of the pressure head body, and pull out set and plunger tip can opposite sliding, the spring retention is in the cavity of pressure head body, and it is located at the top of plunger tip, the lower end of the plunger tip passes through valve split collets axial limiting, one end of the paddle is connect with the upper end for pulling out set, the other end is connect with the driving device being installed on substrate.The present invention is pulled out in once completing in pressure head using pushing away, greatly shortening assembly time, is reduced working strength, is embodied structure high efficiency on valve split collets pressing machine.
Description
Technical field
The invention belongs to automobile engine manufacturing technology field, specifically a kind of valve split collets strip automatic poking fills formula
Pressure head.
Background technique
Engine is automobile core component, determines automotive performance most critical factor.The dress of cylinder cap air valve spring seat and locking plate
Manual form is used with traditional handicraft, large labor intensity, difficulty are high, assembling quality cannot be guaranteed.In recent years in car engine
Machine manufacturing, valve split collets pressing machine are widely used, and spring base and locking plate are first mounted in gas by valve split collets pressing machine in advance
In door rod, pressure head is designed to push-press type structure, and pre-compaction process is completed before entering pressing machine, and prefabricating condition meets precompression foot
It is less than the operating condition of valve stem extension elongation with valve spring compression height.When prepackage power is less than valve spring compressing force, i.e. spring
When free high is crossed greater than valve stem extension elongation, artificial or machine precompressed may result in valve spring squeeze fly, press fitting is eccentric and
It is unqualified.
The valve split collets not automatic push-press type pressure head of strip, although the pressure head of the structure solves asks existing for artificial press fitting
Topic, but because automobile engine industry components are many kinds of, existing limitation is also difficult to avoid that.
The valve split collets not automatic push-press type pressure head of strip, there are many technologies to lack limit, limitation:
1. needing precompressed before entering pressing machine, guarantee when pressing machine is respectively pressed air inlet, exhaust two sides valve rotation
Spring base and locking plate are unlikely to fall off；
2. valve spring free high is crossed greater than valve stem extension elongation, pre-pressing process is difficult to meet actual condition demand, pushes away
It is winged that pressure type pressure head causes spring to squeeze, and reduces press fitting quality and press fitting efficiency.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of valve split collets strip automatic pokings to fill formula pressure head, solve
It first pre-installs and pushes two techniques afterwards, pushes the problem of door rod of losing heart low efficiency of poor quality, realize valve split collets and be disposably pressed
Pushing technique in place.
To achieve the goals above, the present invention uses following scheme:
A kind of valve split collets strip automatic poking dress formula pressure head, including plunger tip, pulling sleeve, permanent magnet, spring, plectrum, pressure head body
And driving device, wherein pressure head body is hollow structure, and the upper end of the pressure head body is connect with the substrate of locking plate press-loading machine, and lower end is set
Have multiple permanent magnets, the permanent magnet had for magnetic the cotter seat of valve split collets, the pulling sleeve and plunger tip by outside to
It is inside successively inserted in the cavity of the pressure head body and the pulling sleeve and plunger tip opposite can slide, the spring retention is in described
The lower end of top in the cavity of pressure head body and positioned at the plunger tip, the plunger tip passes through the valve split collets axial limiting, institute
The one end for stating plectrum is connect with the upper end of the pulling sleeve, and the other end is connect with the driving device of installation on the substrate.
Along being axially arranged with strip-shaped hole on the side wall of the pressure head body, the plectrum is placed in the strip-shaped hole and can be
Sliding in the strip-shaped hole.
The lower end inner wall of the lower end of the pulling sleeve and the pressure head body is cone match.
The pulling sleeve and plunger tip are inserted in the cavity of the pressure head body by the upper port of the pressure head body, the pressure head body
Cavity threaded upper ends be connected with screw plug, the both ends of the spring are abutted with screw plug and plunger tip respectively.
Circumferentially arranged with multiple grooves on the lower end surface of the pressure head body, multiple permanent magnets are respectively contained in described
In multiple grooves.
The pressure head further comprises guiding axis, and the upper end of the guiding axis is fixedly connected with the substrate, and lower end plugs
In in the pilot hole that the plectrum is equipped with.
The driving device is cylinder, and the cylinder installation is on the substrate and output end is connect with the plectrum.
The pressure head further comprises the detection switch being fixedly mounted on the substrate, and the detection switch is for feeding back
12 pushing of valve split collets signal in place.
The valve split collets is pyramidal structure and is embedded in the annular cone machine hole that the cotter seat is equipped with, institute
The inner wall upper end of valve split collets is stated circumferentially arranged with annular protrusion, which is used for and the annular positioning groove card on valve stem
It connects.
The pressure head is that the plectrum in multiple and two neighboring pressure head shares a driving device.
The invention has the advantages and beneficial effects that:
1. the present invention fills formula structure using strip automatic poking, using pushing in once completing in pressure head, greatly shorten dress
With the time, working strength is reduced, structure high efficiency on valve split collets pressing machine is embodied.
2. the present invention fills formula structure using strip automatic poking, it is suitable for any valve split collets pressing machine, and be directed to long and short type
Valve exploitation, provides good system compatibility.
3. the present invention fills formula structure, spaces compact inside pressure head body using strip automatic poking, movement timing, space are not done mutually
It relates to, embodies the structural reliability, stability.
4. the present invention is a kind of novel mechanism of completion engine cylinder cap air valve spring locking plate assembly, which is directed to valve
Length is greater than the operating condition of valve stem extension elongation, is completed quickly and effectively valve split collets strip and dials dress.
Detailed description of the invention
Fig. 1 is the shaft side figures such as overall appearance of the present invention；
Fig. 2 is overall appearance side view of the present invention；
Fig. 3 is the original state figure that the present invention dials dress valve split collets；
Fig. 4 is that valve stem of the present invention enters the intracorporal state diagram of pressure head；
Fig. 5 is that the present invention dials dress valve split collets completion status figure；
Fig. 6 is the structural schematic diagram for the cotter seat with valve split collets that the present invention applies.
Wherein: 1 is screw plug, and 2 be plunger tip, and 3 be pulling sleeve, and 4 be permanent magnet, and 5 be spring, and 6 be plectrum, and 7 be pressure head body, and 8 are
Guiding axis, 9 be cylinder, and 10 be detection switch, and 11 be substrate, and 12 be valve split collets, and 13 be cotter seat, and 14 be valve stem.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing.
As shown in Figs. 1-2, a kind of valve split collets strip automatic poking provided by the invention fills formula pressure head, including plunger tip 2, pulling sleeve
3, permanent magnet 4, spring 5, plectrum 6, pressure head body 7 and driving device, wherein pressure head body 7 be hollow structure, the pressure head body 7 it is upper
End is connect with the substrate 11 of locking plate press-loading machine, and lower end is equipped with multiple permanent magnets 4, and the permanent magnet 4 is locked for magnetic with valve
The cotter seat 13 of piece 12.The pulling sleeve 3 and plunger tip 2 are successively inserted in the cavity of the pressure head body 7 from outside to inside and institute
Stating pulling sleeve 3 and plunger tip 2 opposite can slide, and the spring 5 is placed in the cavity of the pressure head body 7 and is located at the plunger tip 2
The lower end of top, the plunger tip 2 passes through 12 axial limiting of valve split collets.One end of the plectrum 6 is upper with the pulling sleeve 3
End connection, the other end are connect with the driving device being mounted on the substrate 11.
Along the strip-shaped hole being connected to cavity is axially arranged on the side wall of the pressure head body 7, the plectrum 6 is placed in the item
It can be slided in the strip-shaped hole in shape hole and by the driving of the driving device.The lower end of the pulling sleeve 3 and the pressure head body
7 lower end inner wall is cone match, circumferentially arranged with multiple grooves, multiple permanent magnetism on the lower end surface of the pressure head body 7
Body 4 is respectively contained in the multiple groove.
The pulling sleeve 3 and plunger tip 2 are inserted in the cavity of the pressure head body 7 by the upper port of the pressure head body 7, the top
About 2 core is inside pressure head body 7.The cavity threaded upper ends of the pressure head body 7 are connected with screw plug 1, and the screw plug 1 cooperates plunger tip
2, sliding positioning is provided, while giving support force on spring 5, the both ends of the spring 5 are abutted with screw plug 1 and plunger tip 2 respectively, i.e.,
Connect screw plug 1 on spring 5, lower ejection core 2 provides the elastic force of plunger tip 2, guarantees that plunger tip 2 has and slides up and down space enough；At the beginning of pushing
Begin, the lower end of plunger tip 2 withstands valve split collets 12, top gas door rod 14 when pushing；Pulling sleeve 3 is between 2 outer layer of plunger tip and is located at pressure head
Inside body 7, top connects plectrum 6, and lower part is close to the taper hole of pressure head body 7, there is sliding space up and down.
In the present embodiment, the permanent magnet 4 of stating is eight, and eight are stated the groove that permanent magnet 4 is embedded in 7 lower end surface of pressure head body
Interior, which is skewed slot.4 magnetic cotter seat 13 of permanent magnet, makes the position of cotter seat 13 not change.Eight forever
Magnet 4 provides the magnetic force enough containing rank valve split collets 12 and cotter seat 13.
The pressure head further comprises guiding axis 8, and the upper end of the guiding axis 8 is fixedly connected with the substrate 11, described
The lower end of guiding axis 8 is inserted in the pilot hole that the plectrum 6 is equipped with.The driving device is cylinder 9, and the cylinder 9 is pacified
On the substrate 11 and output end is bolted with the plectrum 6.When the cylinder 9 provides driving, 6 quilt of plectrum
It drives up and down, the punching of 3 moment of pulling sleeve is made to push away valve split collets 12.
The pressure head further comprises the detection switch 10 being fixedly mounted on the substrate 11, and the detection switch 10 is used
In feeding back 12 pushing of valve split collets signal in place, switched using photoelectricity form.
The pressure head is multiple and synchronization action, the output with a cylinder 9 jointly of plectrum 6 in two neighboring pressure head
Axis connection, the moment impact thrust of a cylinder 9 can two valve split collets 6 of pushing be respectively clamped into the circular orientations of two valve stems 14
In slot；The present embodiment uses eight pressure head form of a column, as shown in Figure 1.
The valve split collets 12 is pyramidal structure and is embedded at the annular cone machine hole that the cotter seat 13 is equipped with
Interior, circumferentially arranged with annular protrusion, which is used for and the ring on valve stem 14 for the inner wall upper end of the valve split collets 12
The clamping of shape locating slot, as shown in Figure 6.
The working principle of the invention is:
Valve split collets strip automatic poking provided by the invention fills formula pressure head structure, and when original state, pressure head body 7 passes through eight
4 magnetic valve split collets 12 of permanent magnet and cotter seat 13, as shown in Figure 3.
The pressure head structure of strip is along 14 direction of valve stem close to locking plate press-loading machine intrinsic motivation cylinder cap, the anti-ejection of valve stem 14
Core 2, pressure head structure inner spring 5 are compressed, and valve stem 14 enters inside pressure head body 7.Cylinder 9 is in standby, and plectrum 6 is in
Limes superiors position, 3 nature of pulling sleeve.It is influenced by local friction, valve split collets 12 leaves the annular cone machine hole of cotter seat 13.It dials
Set 3 is affected by gravity, and 7 inner space of pressure head body is compact, and valve split collets 12 will not overturn or sidewinder, as shown in Figure 4.
The valve stem 14 enters certain depth in pressure head body 7, and pressure head structure is static, 9 pushing plectrum 6 of cylinder, 6 wink of plectrum
Between impact pulling sleeve 3, pulling sleeve 3 along plunger tip 2 axial compression valve split collets 12 upper surface, so that valve split collets card 12 is caught in valve stem
In 14 annular positioning groove, as shown in Figure 5.
The pressure head body 7 is completed to dial dress valve split collets 12, and detection switch 10 feeds back the signal in place of valve split collets 12 at this time,
Cylinder 9 loses heart, and plectrum 6 retracts to initial position.Pressure head structure leaves in locking plate press-loading machine along the axis direction of valve stem 14 and sends out
Motivation cylinder cap.Valve spring pushes away valve split collets 12, and annular cone machine hole unidirectionally blocks cotter seat 13, completes valve split collets 12
Assembly.Pulling sleeve 3 returns to initial position under the effect of gravity, and plunger tip 2 is pushed down by 7 inner spring 5 of pressure head body again.
The present invention designs integral type pushing press mounting structure, and using molding formula is first postponed, changing two-stage process is primary completion work
Skill embodies reliability, stability and high efficiency.Present invention can apply to long and short valve regime modes, provide good compatibility
Property.
Claims (9)
1. a kind of valve split collets strip automatic poking fills formula pressure head, which is characterized in that including plunger tip (2), pulling sleeve (3), permanent magnet
(4), spring (5), plectrum (6), pressure head body (7) and driving device, wherein pressure head body (7) is hollow structure, the pressure head body (7)
Upper end connect with the substrate (11) of locking plate press-loading machine, lower end be equipped with multiple permanent magnets (4), the permanent magnet (4) be used for magnetic
Cotter seat (13) with valve split collets (12), the pulling sleeve (3) and plunger tip (2) are successively inserted in the pressure from outside to inside
In the cavity of head body (7) and the pulling sleeve (3) and plunger tip (2) opposite can slide, and the spring (5) is placed in the pressure head
The lower end of top in the cavity of body (7) and positioned at the plunger tip (2), the plunger tip (2) passes through the valve split collets (12) axis
To limit, one end of the plectrum (6) is connect with the upper end of the pulling sleeve (3), the other end and is mounted on the substrate (11)
Driving device connection；
Along strip-shaped hole is axially arranged on the side wall of the pressure head body (7), the plectrum (6) is placed in the strip-shaped hole and can
It is slided in the strip-shaped hole.
2. valve split collets strip automatic poking according to claim 1 fills formula pressure head, which is characterized in that the pulling sleeve (3)
The lower end inner wall of lower end and the pressure head body (7) is cone match.
3. valve split collets strip automatic poking according to claim 2 fills formula pressure head, which is characterized in that the pulling sleeve (3) and
Plunger tip (2) is inserted in the cavity of the pressure head body (7) by the upper port of the pressure head body (7), the cavity of the pressure head body (7)
Threaded upper ends are connected with screw plug (1), and the both ends of the spring (5) are abutted with screw plug (1) and plunger tip (2) respectively.
4. valve split collets strip automatic poking according to claim 2 fills formula pressure head, which is characterized in that the pressure head body (7)
Lower end surface on circumferentially arranged with multiple grooves, multiple permanent magnets (4) are respectively contained in the multiple groove.
5. valve split collets strip automatic poking according to claim 1 fills formula pressure head, which is characterized in that the pressure head is further
Including guiding axis (8), the upper end of the guiding axis (8) is fixedly connected with the substrate (11), and lower end is inserted in the plectrum (6)
In the pilot hole being equipped with.
6. valve split collets strip automatic poking according to claim 1 fills formula pressure head, which is characterized in that the driving device is
Cylinder (9), the cylinder (9) is mounted on the substrate (11) and output end is connect with the plectrum (6).
7. valve split collets strip automatic poking according to claim 1 fills formula pressure head, which is characterized in that the pressure head is further
Including the detection switch (10) being fixedly mounted on the substrate (11), the detection switch (10) is for feeding back valve split collets
(12) pushing signal in place.
8. valve split collets strip automatic poking according to claim 1 fills formula pressure head, which is characterized in that the valve split collets
(12) it is pyramidal structure and is embedded in the annular cone machine hole that the cotter seat (13) is equipped with, the valve split collets
(12) inner wall upper end is used for and the annular positioning groove card on valve stem (14) circumferentially arranged with annular protrusion, the annular protrusion
It connects.
9. valve split collets strip automatic poking according to claim 1-8 fills formula pressure head, which is characterized in that the pressure
Head is that the plectrum (6) in multiple and two neighboring pressure head shares a driving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510756128.5A CN106670781B (en) | 2015-11-09 | 2015-11-09 | Valve split collets strip automatic poking fills formula pressure head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510756128.5A CN106670781B (en) | 2015-11-09 | 2015-11-09 | Valve split collets strip automatic poking fills formula pressure head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106670781A CN106670781A (en) | 2017-05-17 |
| CN106670781B true CN106670781B (en) | 2018-12-14 |
Family
ID=58863142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510756128.5A Active CN106670781B (en) | 2015-11-09 | 2015-11-09 | Valve split collets strip automatic poking fills formula pressure head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106670781B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070068708A (en) * | 2005-12-27 | 2007-07-02 | 두산인프라코어 주식회사 | 3-groove valve cotter inserting device |
| CN101983833A (en) * | 2010-10-29 | 2011-03-09 | 力帆实业(集团)股份有限公司 | Engine air valve locking plate pressure head |
| CN201940788U (en) * | 2010-12-22 | 2011-08-24 | 安徽江淮汽车股份有限公司 | Engine valve lock clamp press-fit pressure head |
| CN201960330U (en) * | 2010-12-30 | 2011-09-07 | 中国科学院沈阳计算技术研究所有限公司 | Automobile engine piston pin pressure equipment machine |
| CN204094434U (en) * | 2014-07-29 | 2015-01-14 | 浙江吉利罗佑发动机有限公司 | A kind of valve split collets press-loading device |
| CN104589026A (en) * | 2015-01-14 | 2015-05-06 | 陈小利 | Pressure head assembly for assembling of engine valve lock plate |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63123640A (en) * | 1986-11-12 | 1988-05-27 | Toshiba Corp | Method and device for assembly inspection of two-divided cylinder |
| US5357675A (en) * | 1992-02-28 | 1994-10-25 | Canon Kabushiki Kaisha | Cotter assembling the method and cotter assembling apparatus |
-
2015
- 2015-11-09 CN CN201510756128.5A patent/CN106670781B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070068708A (en) * | 2005-12-27 | 2007-07-02 | 두산인프라코어 주식회사 | 3-groove valve cotter inserting device |
| CN101983833A (en) * | 2010-10-29 | 2011-03-09 | 力帆实业(集团)股份有限公司 | Engine air valve locking plate pressure head |
| CN201940788U (en) * | 2010-12-22 | 2011-08-24 | 安徽江淮汽车股份有限公司 | Engine valve lock clamp press-fit pressure head |
| CN201960330U (en) * | 2010-12-30 | 2011-09-07 | 中国科学院沈阳计算技术研究所有限公司 | Automobile engine piston pin pressure equipment machine |
| CN204094434U (en) * | 2014-07-29 | 2015-01-14 | 浙江吉利罗佑发动机有限公司 | A kind of valve split collets press-loading device |
| CN104589026A (en) * | 2015-01-14 | 2015-05-06 | 陈小利 | Pressure head assembly for assembling of engine valve lock plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106670781A (en) | 2017-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201295897Y (en) | Holddown device used for pressing fittings onto the elongated shaft end | |
| CN106670781B (en) | Valve split collets strip automatic poking fills formula pressure head | |
| CN203868383U (en) | Fuel gas plug valve | |
| CN210255140U (en) | Positioning element of hydraulic structure | |
| CN201439806U (en) | Integrated ball assembling device of bearing automatic assembly machine | |
| CN204942154U (en) | A kind of pressurizing cylinder of tool New Buffering structure | |
| CN203508981U (en) | Pressurizing-type energy accumulator | |
| CN207251404U (en) | A kind of new energy motor quickly inserts steel magnet device automatically with multilayer | |
| CN208409094U (en) | A kind of assembly device of piston of automobile engine pin lower circlip | |
| CN205184669U (en) | Bearing inner race pressure equipment frock | |
| CN214248109U (en) | Controllable type nitrogen spring of return stroke | |
| CN206124019U (en) | Accurate mould structure | |
| CN201268076Y (en) | Mechanical linking secondary oblique jacking mechanism for injection mold | |
| CN210062174U (en) | Bottom expanding and pressing forming device for special-shaped paper container | |
| CN107378531B (en) | Auxiliary supporting mechanism suitable for crankcase processing | |
| CN208391412U (en) | A kind of piston shoes buckle tool | |
| CN112576671A (en) | Return stroke controllable nitrogen spring and operation control method | |
| CN201568190U (en) | High power diesel starting valve of combination valve core | |
| CN106312904A (en) | Spring assembling compression unit of hydraulic single-action actuating mechanism used for deep water valve | |
| CN105436331A (en) | Plunger component opening closing tool | |
| CN220705856U (en) | Start-stop electromagnetic pump | |
| CN208831431U (en) | A kind of inserts installation sliding slot adhesive tool | |
| CN218946542U (en) | Gear hobbing processing positioning tool | |
| CN209025985U (en) | A kind of quick despatch connection component | |
| CN213928987U (en) | Thrust cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |