CN207900264U - For the rotating mechanism for the fixture that lathe uses - Google Patents

For the rotating mechanism for the fixture that lathe uses Download PDF

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Publication number
CN207900264U
CN207900264U CN201820283755.0U CN201820283755U CN207900264U CN 207900264 U CN207900264 U CN 207900264U CN 201820283755 U CN201820283755 U CN 201820283755U CN 207900264 U CN207900264 U CN 207900264U
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CN
China
Prior art keywords
rotation
clamping
gear
fixture
grain
Prior art date
Application number
CN201820283755.0U
Other languages
Chinese (zh)
Inventor
田务林
牛刚
Original Assignee
长江师范学院
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 长江师范学院 filed Critical 长江师范学院
Priority to CN201820283755.0U priority Critical patent/CN207900264U/en
Application granted granted Critical
Publication of CN207900264U publication Critical patent/CN207900264U/en

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Abstract

The utility model discloses a kind of rotating mechanisms of the fixture used for lathe, it is characterized in that:Including pedestal, rotation drive rod, rotation driving gear and rotation slave link, rotation drive rod is rotatably mounted on pedestal, one end of rotation drive rod is coaxially fixed with rotation driving gear;It is to be rotatably connected between grain-clamping table lower surface and pedestal, grain-clamping table lower surface is installed with rotation slave link, rotation slave link includes center tooth post, rotation intermediate transmission ring gear and planetary gear, the inside of pedestal has an installation cavity, the upper end of the center tooth post and lower surface of grain-clamping table is coaxial is fixedly linked;Rotation intermediate transmission ring gear is the ring gear around center tooth post and is mounted in installation cavity that rotation is engaged with center tooth post by planetary gear with intermediate transmission ring gear to be connected;The lateral surface evagination of rotation intermediate transmission ring gear is formed with bulge loop, and the end face of the bulge loop is engaged with rotation with driving gear by tooth to be connected.

Description

For the rotating mechanism for the fixture that lathe uses
Technical field
The utility model belongs to the field of fixtures used for lathe, and in particular to a kind of rotation of the fixture used for lathe Mechanism.
Background technology
Axial workpiece is a kind of part that lathe is often processed.Currently, axial workpiece processing when majority be first by lathe Lai Processing, then also needs to reprocess;However, the lathe type used needed for axial workpiece reprocessing is various, such as:Milling machine, drill, Grinding machine etc., still, except be fitted without on other lathes of lathe similar to be exclusively used in like that on lathe clamping axial workpiece Fixture, it is difficult to axial workpiece carry out fast clamp positioning.
In the prior art, the patent that notification number is CN203600067U discloses " a kind of cutting of axial workpiece and/or grinding Clamp for machining ", should " a kind of axial workpiece cutting and/or clamp for grinding "(Referring to this specification attached drawing 1)Including chuck 1, The centre of upper fixture block 2 and lower fixture block 3, the chuck 1 is equipped with part through-hole 4, and the same of chuck 1 is radially separately installed with Fixture block 2 and lower fixture block 3, the upper fixture block 2 and lower fixture block 3 can do straight-line feed movement in the radial direction in this of chuck 1;On It is connect respectively with limiting device in fixture block 2 and lower fixture block 3, it can be by 3 defined position of upper fixture block 2 or lower fixture block;The upper folder It is respectively equipped with V-type on block 2 and lower fixture block 3 to be open, the opening of upper fixture block 2 and lower fixture block 3 is oppositely arranged.
But above-mentioned " a kind of axial workpiece cutting and/or clamp for grinding " there are still be difficult to realize rotation process Shortcoming, and then be difficult to rotate axial workpiece and in axis using the fixture to match on other lathes except lathe It is processed on class piece surface.
Based on this, applicant considers that design one kind having rotation function, simple and compact for structure reasonable, is easy in various lathes The fixture of upper installation used for lathe.
Invention content
In view of the above shortcomings of the prior art, technical problem to be solved in the utility model is:How a kind of tool is provided There is rotation function, it is simple and compact for structure reasonable, it is easy to the fixture used for lathe installed on various lathes.
In order to solve the above-mentioned technical problem, the utility model uses the following technical solution:
For the rotating mechanism for the fixture that lathe uses, rotating mechanism is for driving grain-clamping table to rotate, it is characterised in that:Including Pedestal, rotation drive rod, rotation are rotatably mounted with institute with gear and rotation slave link is driven on the pedestal Rotation drive rod is stated, one end of rotation drive rod is rotation driving end, the other end of the rotation drive rod Coaxially it is fixed with the rotation driving gear;
To be rotatably connected between the grain-clamping table lower surface and pedestal, the grain-clamping table lower surface is installed with described Rotation slave link, the rotation slave link are connected with being engaged between driving gear with the rotation;
The inside of the pedestal has installation cavity, and the driven connection of the rotation is provided in installation cavity Part, the rotation slave link include center tooth post, rotation intermediate transmission ring gear and planetary gear, the center tooth post Upper end be through to installation cavity and with the lower surface of grain-clamping table is coaxial is fixedly linked;The rotation intermediate transmission ring gear It is mounted in installation cavity to be abutted by thrust bearing around the ring gear of the center tooth post and upper and lower end face, the rotation It is engaged and is connected by planetary gear between the internal tooth and the external tooth of center tooth post of conversion intermediate transmission ring gear;The rotation is intermediate The lateral surface evagination of transmission ring gear is formed with bulge loop, and the end face of the bulge loop is used by tooth and rotation with the rotation installed on drive rod Gear engagement is driven to be connected.
The rotating mechanism for the fixture that the utility model is used for lathe when in use, can be by rotating rotation drive rod Rotation drive rotation slave link with driving end, to drive grain-clamping table to rotate, and then enable on grain-clamping table Axial workpiece rotate and preferably meet processing request to Axle Surface.So that the utility model was used for lathe Fixture has the function of being clamped and rotates axial workpiece, and has the advantages that simple and reasonable.
At the same time, after using above-mentioned rotation slave link, the torque of rotation drive rod is passed along rotation with intermediate The tangential application of moving teeth ring, this makes it possible to the rotary forces for obtaining bigger to drive grain-clamping table to rotate integrally, so that clamping Rotating for platform is more laborsaving light.
In addition, the structure of above-mentioned rotation slave link is also relatively simple and small, and it is light-weight, it can help really Protect the compactedness of rotating mechanism.
As a preferred embodiment:The planetary gear is in the circumferencial direction spaced three around center tooth post Group.
While three groups of planetary gears can make full use of installation void space, additionally it is possible to increase planetary gear, center Tooth post and rotation are reduced abrasion, are prolonged the service life with connected area is engaged between intermediate transmission ring gear.
As a preferred embodiment:Planetary gear described in every group includes be engaged with each other connected first gear and the second tooth Wheel.
After above-mentioned planetary structure, it is intermediate that planetary gear, center tooth post and rotation can be further increased Connected area is engaged between transmission ring gear, abrasion is reduced, prolongs the service life.
As a preferred embodiment:On one end of the rotation drive rod on the driving end of the outside of the pedestal It extends radially through and is provided with torsion hole.
The setting in above-mentioned torque conversion hole, is not only convenient for being reversed using torque rod, also allows for being inserted into using lock pin The torsion, come locking rotation drive rod, is prevented the mistake of grain-clamping table from rotating, further ensures that the reliability that this fixture uses with hole.
As a preferred embodiment:At least one installation journal stirrup is arranged in the lower end evagination of the peripheral side of the pedestal, should It is vertically provided through mounting hole on installation journal stirrup.
The setting of above-mentioned installation journal stirrup so that the fixture of the utility model is easier to assemble on various lathes.
Description of the drawings
Fig. 1 is that notification number is:" a kind of cutting of axial workpiece and/or the grinding of the patent disclosure of CN203600067U The structural schematic diagram of fixture.
Fig. 2 is a kind of dimensional structure diagram using the fixture that the utility model is used for lathe.
Fig. 3 is a kind of dimensional structure diagram using the fixture that the utility model is used for lathe(Partly cut-away Figure).
Fig. 4 is a kind of dimensional structure diagram using the fixture that the utility model is used for lathe(Partly cut-away Figure).
Fig. 5 is a kind of sectional view using the fixture that the utility model is used for lathe.
Fig. 6 is a kind of dimensional structure diagram for the pedestal using the fixture that the utility model is used for lathe.
In Fig. 2 to Fig. 6 label for:
1, pedestal;
101, installation inner cavity;
2, grain-clamping table;
3, hexagonal bolt head;
4, fixture block;
5, nut;
6, lead screw;
7, rotation drive rod;
8, clamping intermediate transmission ring gear;
9, installation cavity;
10, first gear;
11, second gear;
12, center tooth post;
13, link block;
14, rotation driving gear;
15, rotation intermediate transmission ring gear;
16, clamping drive rod;
17, journal stirrup is installed.
Specific implementation mode
The utility model is made into one with reference to a kind of attached drawing using the fixture that the utility model is used for lathe The detailed description of step.Wherein, for description using exemplary terms such as upper and lower, left and right, it is therefore intended that help reader's reason Solution, limits without being intended for.
The first embodiment, as shown in Figures 2 to 6:
A kind of fixture used for lathe, including grain-clamping table 2 and clamping device;The table top center of the grain-clamping table 2 is arranged There is the jack of the end insertion for axial workpiece, is equipped on the table top of the grain-clamping table 2 by the jack for axial workpiece to be clamped Clamping device;The clamping device includes fixture block 4 and fixture block driving structure, which is equal on the circumferencial direction of jack Even spaced at least two, and every piece of fixture block 4 can fixture block driving structure driving under along jack radial direction make it is close Or the reciprocating movement far from jack;
It further include the rotating mechanism for driving grain-clamping table 2 to rotate(As the utility model), the rotating mechanism includes Pedestal 1, rotation drive rod 7, rotation are rotationally pacified with gear 14 and rotation slave link is driven on the pedestal 1 Equipped with rotation drive rod 7, the rotation is that rotation drives end, the rotation drive rod 7 with one end of drive rod 7 The other end be coaxially fixed with rotation driving gear 14;
To be rotatably connected between 2 lower surface of the grain-clamping table and pedestal 1,2 lower surface of the grain-clamping table is installed with The rotation slave link, the rotation slave link are connected with being engaged between driving gear 14 with the rotation.
The above-mentioned fixture used for lathe when in use, can use driving end by rotating the rotation of rotation drive rod 7 Rotation slave link is driven, to drive grain-clamping table 2 to rotate, and then enables to the axial workpiece on grain-clamping table 2 to revolve Turn and preferably meets the processing request to Axle Surface.So that the above-mentioned fixture used for lathe has clamping and rotation The function of axial workpiece, and have the advantages that simple and reasonable.
Wherein, it is in cylinder mesa-shaped that the grain-clamping table 2 is whole, and the inside of the grain-clamping table 2 has installation inner cavity 101;
The fixture block driving structure includes clamping drive rod 16, clamping intermediate transmission ring gear 8, lead screw 6 and nut 5, 16 entirety of the clamping drive rod is vertical and is installed in rotation on the table top of the grain-clamping table 2, and the clamping drive rod 16 lower end is located at 101 inside of installation inner cavity and is set with driving gear, which is that clamping is used with the upper end of drive rod 16 Drive end;
The clamping is rotatably mounted with the coaxial setting of intermediate transmission ring gear 8 and grain-clamping table 2 and by thrust bearing In the radial end face of the installation inner bottom surface of inner cavity 101, the clamping intermediate transmission ring gear 8 16 lower end of drive rod is used with clamping Driving gear engagement be connected, the clamping is provided with driving cog with the upper surface of intermediate transmission ring gear 8;
The table top of the grain-clamping table 2 is provided with guide slots, and the guide slots are equal with the quantity of fixture block 4 and are pressing from both sides Hold and be evenly spaced on around jack on the table top of platform 2, the guide slots be one end be connected to jack and generally with insert The radially consistent strip in hole;It is arranged in parallel with a lead screw 6, and the lead screw 6 immediately below each guide slots Rotatably be socketed with link block 13 in the inner end of jack radial direction, the upper end of the link block 13 through the guide slots and with card Block 4 is fixedly linked;The lead screw 6 is screwed in by screw thread in the nut 5 in the outer end of jack radial direction, the axis of the nut 5 The inside of grain-clamping table 2, and the lateral surface of the axial middle part of the nut 5 are installed in rotation on by bearing to both ends lateral surface It is connected with the transmission tooth engagement.
After above-mentioned fixture block driving structure, it can drive clamping is intermediate to pass with drive rod 16 by rotating clamping Moving teeth ring 8 rotates, and the rotation of clamping intermediate transmission ring gear 8 then can drive all nuts 5 to rotate simultaneously, and nut 5 rotates Then so that lead screw 6 makees the movement closer or far from jack, and it can then pass through separate nut 5 on leading screw after leading screw is close to jack Fixture block 4 that one end is installed by link block 13 clamps axial workpiece.
Also, because above-mentioned fixture block driving structure is by clamping intermediate transmission ring gear 8 while the synchronous each spiral shell of driving Mother 5, so that the net synchronization capability of each nut 5 is accessed and is effectively ensured, and when the synchronism that each nut 5 rotates effectively is protected After card, it can also ensure each leading screw in jack radially reciprocating synchronism, and then be effectively ensured and be finally clamped in The axial line of axial workpiece on fixture block 4 can be overlapped with the axial line of jack and grain-clamping table 2, to conducive to guarantee rotation processing Precision.
In addition, lead screw 6 is the structure of the radial arrangement along jack in above-mentioned fixture block driving structure so that clamping drive rod 16 when not rotating, fixture block 4 clamp axial workpiece reaction force can by the threaded function of lead screw 6 in the internal thread of nut 5, So that lead screw 6 is locked with nut 5, it is ensured that the reliability of axial workpiece clamping.
When implementation, it is slidably connected between the lateral surface of the link block 13 and the hole wall of guide slots.In this way so that Guide slots can to the mobile formation guide and limit of link block 13, improve fixture block 4 along jack it is radially reciprocating it is accurate Degree, to more precisely ensure that the axial line for the axial workpiece being clamped on fixture block 4 can be with the axle center of jack and grain-clamping table 2 Line overlaps.
When implementation, the clamping drive rod 16 is vertically to be inserted on grain-clamping table 2, and preferably clamping drive rod 16 is logical Bearing is crossed to be installed in rotation on the grain-clamping table 2.
Wherein, which is fixedly connected with the hexagonal bolt head 3 of driving with the upper end of drive rod 16.
When implementation, preferably the upper end of clamping drive rod 16 is between two neighboring guide slots and close to grain-clamping table 2 Table top outboard end position.So, the hexagonal bolt head 3 of larger diameter can be set to increase position vector, to obtain The torque of bigger is obtained, the clamping force of fixture block 4 is improved.
After above-mentioned hexagonal bolt head 3 is set, can clamping drive rod 16 easily be reversed by spanner manually.
Wherein, the clamping is engaged with intermediate transmission ring gear 8 with the driving gear that 16 lower end of drive rod is clamped connected Radial end face is inner side end.
So, 101 space of installation inner cavity is can make full use of, may make the structure of fixture more compact, to Convenient for being installed and used on various lathes.
When implementation, during the overall diameter of the clamping intermediate transmission ring gear 8 is more than the interior diameter of jack, and the clamping is used Between transmission ring gear 8 overall diameter with grain-clamping table 2 inside installing use the maximum gauge of inner cavity 101 it is consistent.So, can Enough make full use of 101 space of installation inner cavity.
Wherein, the table top of the lower surface of the fixture block 4 and grain-clamping table 2 is the plane of connection sliding engagement with one another.
So, you can support fixture block 4 using the table top of grain-clamping table 2, prevent one end far from nut 5 on lead screw 6 The reaction force crimp born by the gravity of fixture block 4 and fixture block 4 effectively ensures that fixture persistently can reliably make With.
Wherein, the inside of the pedestal 1 has installation cavity 9, and the rotation is provided in installation cavity 9 and is used Slave link, the rotation slave link include center tooth post 12, rotation intermediate transmission ring gear 15 and planetary gear,
The upper end of the center tooth post 12 be through to installation cavity 9 and with the coaxial stationary phase in the lower surface of grain-clamping table 2 Even;The rotation intermediate transmission ring gear 15 be around the center tooth post 12 ring gear and upper and lower end face pass through thrust bearing It abuts and is mounted on installation in cavity 9, the rotation is used between the internal tooth and the external tooth of center tooth post 12 of intermediate transmission ring gear 15 It is connected by planetary gear engagement;The lateral surface evagination of rotation intermediate transmission ring gear 15 is formed with bulge loop, the bulge loop End face is engaged with rotation with the rotation driving gear 14 installed on drive rod 7 by tooth to be connected.
After above-mentioned rotation slave link, the torque of rotation drive rod 7 is along rotation intermediate transmission ring gear 15 Tangential application, this makes it possible to the rotary forces for obtaining bigger to drive grain-clamping table 2 to rotate integrally, so that grain-clamping table 2 It rotates more laborsaving light.
In addition, the structure of above-mentioned rotation slave link is also relatively simple and small, and it is light-weight, it can help really Protect the compactedness of rotating mechanism.
Wherein, the planetary gear is in spaced three groups of the circumferencial direction around center tooth post 12.
While three groups of planetary gears can make full use of installation 9 space of cavity, additionally it is possible to increase planetary gear, center Tooth post 12 and rotation are reduced abrasion, are prolonged the service life with connected area is engaged between intermediate transmission ring gear 15.
Wherein, planetary gear described in every group includes the first gear 10 for being engaged with each other connected and second gear 11.
When implementation, the outside circle of the preferably axial connecting line and central gear of first gear 10 and second gear 11 is tangent.This Sample can to include the torque of the planet gear drives of first gear 10 and second gear 11 to be the tooth top along central gear Round tangential application so that planet gear drives center tooth post 12 is more easy.At the same time, in above-mentioned fixture integrally in perpendicular To when installing and using, and when axial workpiece center of gravity is not perpendicular with its axial line, axial workpiece center of gravity acts on grain-clamping table 2 It can tend to the axial line for being directed toward the second gear 11 being meshed with center tooth post 12 with the direction of the power of center tooth post 12(Namely axis Class part center of gravity acts on grain-clamping table 2 and is more they tended to along to be meshed with center tooth post 12 with the direction of the power of center tooth post 12 The radial direction of two gears 11), have to be better protected from and misroute dynamic locking effect.
After above-mentioned planetary structure, it can further increase in planetary gear, center tooth post 12 and rotation use Between engage connected area between transmission ring gear 15, reduce abrasion, prolong the service life.
Wherein, the rotation is extended radially through on the driving end for the outside for being located at the pedestal 1 on one end of drive rod 7 It is provided with torsion hole.
The setting in above-mentioned torque conversion hole, is not only convenient for being reversed using torque rod, also allows for being inserted into using lock pin The torsion, come locking rotation drive rod 7, prevents the mistake of grain-clamping table 2 from rotating with hole, and further ensure that above-mentioned fixture uses can By property.
Wherein, at least one installation journal stirrup 17, the installation journal stirrup 17 is arranged in the lower end evagination of the peripheral side of the pedestal 1 On be vertically provided through mounting hole.
The setting of above-mentioned installation journal stirrup 17 so that above-mentioned fixture is easier to assemble on various lathes.
The operation principle of the above-mentioned fixture used for lathe:
Before use, first this fixture is fixed on by installing journal stirrup 17 on lathe.
In use, on the solid hexagonal bolt head 3 in the upper end for being sleeved on clamping drive rod 16 using spanner first, hexagonal is rotated Bolt head 3 simultaneously makes clamping drive clamping intermediate transmission ring gear 8 to rotate with drive rod 16, clamping intermediate transmission ring gear 8 Rotation can drive multiple nuts 5 to rotate together with simultaneously, and it is close that the rotations of multiple nuts 5 drives lead screw 6 radially to make simultaneously again The action of jack, so as to clamp axial workpiece by the fixture block 4 of the end installation far from nut 5 on lead screw 6(Conversely, Axial workpiece can then be separated from fixture block 4).
Then, rotation rotation drive rod 7 can drive rotation intermediate transmission ring gear 15 to rotate, rotation intermediate transmission Ring gear 15 drives planetary gear to drive central gear to rotate simultaneously again, and central gear rotation then drives grain-clamping table 2 and is clamped in Axial workpiece rotation on grain-clamping table 2.
It the above is only the utility model preferred embodiment, need to point out it is that those skilled in the art are not being departed from Under the premise of the technical program, several modifications and improvements can also be made, the technical solution of above-mentioned modification and improvement should be regarded equally To fall into the claimed range of the claims.

Claims (5)

1. for the rotating mechanism for the fixture that lathe uses, rotating mechanism is for driving grain-clamping table to rotate, it is characterised in that:The bottom of including Seat, rotation drive rod rotate and use driving gear and rotation slave link, are rotatably mounted on the pedestal described One end of rotation drive rod, rotation drive rod is rotation driving end, and the other end of the rotation drive rod is same Axis is fixed with the rotation driving gear;
To be rotatably connected between the grain-clamping table lower surface and pedestal, the grain-clamping table lower surface is installed with the rotation With slave link, the rotation slave link is connected with being engaged between driving gear with the rotation;
The inside of the pedestal has installation cavity, and the rotation slave link is provided in installation cavity, The rotation slave link includes center tooth post, rotation intermediate transmission ring gear and planetary gear, the center tooth post Upper end be through to installation cavity and with the lower surface of grain-clamping table is coaxial is fixedly linked;The rotation is with intermediate transmission ring gear Around the center tooth post ring gear and upper and lower end face by thrust bearing abut be mounted on installation cavity in, the rotation It is connected with being engaged by planetary gear between the internal tooth and the external tooth of center tooth post of intermediate transmission ring gear;The rotation is passed with intermediate The lateral surface evagination of moving teeth ring is formed with bulge loop, and the end face of the bulge loop is driven by tooth and rotation with the rotation installed on drive rod Moving gear engagement is connected.
2. the rotating mechanism of the fixture according to claim 1 used for lathe, it is characterised in that:The planetary gear is In spaced three groups of the circumferencial direction around center tooth post.
3. the rotating mechanism of the fixture according to claim 1 used for lathe, it is characterised in that:Planet tooth described in every group Wheel includes be engaged with each other connected first gear and second gear.
4. the rotating mechanism of the fixture according to claim 1 used for lathe, it is characterised in that:The rotation driving It is extended radially through on the driving end of the outside of the pedestal on one end of bar and is provided with torsion hole.
5. the rotating mechanism of the fixture according to claim 1 used for lathe, it is characterised in that:The circumferential direction of the pedestal At least one installation journal stirrup is arranged in the lower end evagination of side, and mounting hole is vertically provided through on the installation journal stirrup.
CN201820283755.0U 2018-02-28 2018-02-28 For the rotating mechanism for the fixture that lathe uses CN207900264U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820283755.0U CN207900264U (en) 2018-02-28 2018-02-28 For the rotating mechanism for the fixture that lathe uses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820283755.0U CN207900264U (en) 2018-02-28 2018-02-28 For the rotating mechanism for the fixture that lathe uses

Publications (1)

Publication Number Publication Date
CN207900264U true CN207900264U (en) 2018-09-25

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CN201820283755.0U CN207900264U (en) 2018-02-28 2018-02-28 For the rotating mechanism for the fixture that lathe uses

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110052635A (en) * 2019-04-28 2019-07-26 杨晓林 A kind of self-centering chuck
CN110238785A (en) * 2019-05-17 2019-09-17 陕西飞机工业(集团)有限公司 A kind of spanner
CN110961667A (en) * 2019-12-25 2020-04-07 北京航天控制仪器研究所 Single-drive three-linkage chuck for controlling clamping force of annular component
CN111203562A (en) * 2020-01-17 2020-05-29 张武军 Be used for full-automatic high-efficient drilling equipment of hexagonal copper joint

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110052635A (en) * 2019-04-28 2019-07-26 杨晓林 A kind of self-centering chuck
CN110238785A (en) * 2019-05-17 2019-09-17 陕西飞机工业(集团)有限公司 A kind of spanner
CN110961667A (en) * 2019-12-25 2020-04-07 北京航天控制仪器研究所 Single-drive three-linkage chuck for controlling clamping force of annular component
CN111203562A (en) * 2020-01-17 2020-05-29 张武军 Be used for full-automatic high-efficient drilling equipment of hexagonal copper joint

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180925

Termination date: 20200228