CN201198092Y - Automatic clamping apparatus for machine tool - Google Patents

Automatic clamping apparatus for machine tool Download PDF

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Publication number
CN201198092Y
CN201198092Y CNU2008200855264U CN200820085526U CN201198092Y CN 201198092 Y CN201198092 Y CN 201198092Y CN U2008200855264 U CNU2008200855264 U CN U2008200855264U CN 200820085526 U CN200820085526 U CN 200820085526U CN 201198092 Y CN201198092 Y CN 201198092Y
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CN
China
Prior art keywords
main shaft
pusher dog
connecting rod
pawl
pusher
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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.)
Expired - Fee Related
Application number
CNU2008200855264U
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Chinese (zh)
Inventor
柳品法
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柳品法
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Filing date
Publication date
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Priority to CNU2008200855264U priority Critical patent/CN201198092Y/en
Application granted granted Critical
Publication of CN201198092Y publication Critical patent/CN201198092Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an automatic clamping device used for a machine tool, which comprises a headstock, a main shaft, a pull rod, a clamping head, a shifting fork mechanism and a cam actuating mechanism. The front end of the main shaft is provided with the clamping head; the pull rod is arranged inside the main shaft; the front end of the pull rod is fixedly connected with the clamping head; a knockout pawl and a pusher dog encloser are enclosed on the main shaft; the knockout pawl is connected with the shifting fork mechanism which is connected with the cam actuating mechanism on the machine tool; the pusher dog encloser is connected with three pusher dogs through pin rolls; the heads on the front ends of the pusher dogs contact with the pyramidal face of the knockout pawl; the pusher dogs are provided with radial convex claws; the radial convex claws prop up and contact with the main shaft; the pusher dog encloser is fixed relative to the pull rod, which is connected in the way that the pusher dog encloser is fixed around the main shaft and moves axially. In the technical proposal, three pusher dogs are adopted to pull the pull rod so that the pull exerted on the pull rod is larger and more uniform, thus ensuring an elastic grip holder to hold materials firmly and reliably. The automatic clamping device has the advantages of simple structure, low cost, and holding materials stably and reliably and so on.

Description

A kind of automatic clamping device that is used for lathe
Technical field
The utility model belongs to field of machine tool equipment, particularly relates to a kind of device that is used for the automatic clamping labor and materials of lathe.
Background technology
Publication number is that the patent documentation of CN2578037Y discloses a kind of lathe automatic clamping device, it adopts shifting fork mechanism to pawl and produce to move, make two pusher dogs that contact with the conical surface of pawling produce certain rotation, and then the offset pull bar that is connected of pulling and flange on the pusher dog produces with respect to the moving of main shaft, and finally makes the collet that is fixed on the pull bar front end finish to clamp and unclamps action.But under the bigger situation of labor and materials diameter, the pulling force to pull bar that pusher dog produced is not enough and force distribution is uneven to adopt two, makes collet clamping labor and materials built on the sand, causes the of poor quality and potential safety hazard of machine tooling.
Summary of the invention
In order to solve above-mentioned technical problem, the purpose of this utility model provides a kind of automatic clamping device that is used for lathe, be applicable to that various diameter labor and materials are particularly useful for the automatic clamping of the big labor and materials of diameter, have advantages such as simple in structure, that cost is low, clamping is solid and reliable.
To achieve the above object, the utility model has adopted following technical scheme:
A kind of automatic clamping device that is used for lathe, comprise main spindle box, main shaft, pull bar, chuck, shifting fork mechanism and cam executing agency, described front-end of spindle is provided with chuck, pull bar is set in the main shaft, the pull bar front end is fixedlyed connected with chuck, be arranged with on the described main shaft and pawl and the pusher dog cover, described pawling is connected with shifting fork mechanism, shifting fork mechanism is connected with cam executing agency on the lathe, described pusher dog puts by bearing pin and is connected with three pusher dogs, the pawl head of described pusher dog front end contacts with the conical surface of pawling, pusher dog is provided with radially dog, and radially dog offsets with main shaft and contacts, wherein, described pusher dog cover is fixed with respect to pull bar, and described pusher dog cover is connected with moving axially with respect to circumferential the fixing of main shaft.Spur pull bar by three pusher dogs and move, make its suffered pulling force bigger more even, guaranteed that collet clamping labor and materials are solid and reliable.
Shifting fork mechanism etc. can be arranged in the main spindle box for the lathe of processing diameter less labor and materials, yet lathe for the big labor and materials of processing diameter, above-mentioned shifting fork mechanism can be located at the main spindle box outside, comprise and connect the bearing of pawling, bearing inner race with pawl fixing, bearing outer ring is by locating piece and bolt and to dial circle hinged, described group of circle one end and fixed bar are hinged, fixed bar and main spindle box relative fixed, the described group of circle other end flexibly connects connecting rod A, connecting rod A is connected with the connecting rod B that rotation is arranged on the main spindle box, and connecting rod B one end and connecting rod A flexibly connect, and the connecting rod B other end connects cam executing agency; Equally, pusher dog cover etc. also is arranged on outside the main spindle box, the above-mentioned back end of tie rod nut that has been threaded, and nut offsets with the pusher dog cover and contacts, and above-mentioned radially dog offsets with the main shaft end and contacts.Like this, reduce the volume of main spindle box, and need in main spindle box, not fill lubricating oil, saved material and use cost.
As preferably, above-mentioned connecting rod A by spherical plain bearing rod end respectively with dial circle and be connected with connecting rod B.Spherical plain bearing rod end is threaded with connecting rod A, can conveniently adjust the displacement of shifting fork mechanism.
Above-mentioned rear-end of spindle is provided with kidney slot, and described pusher dog puts and is provided with the bolt that matches with kidney slot.Like this, the pusher dog cover can circumferentially be fixed and move axially with respect to main shaft.
The utility model is owing to adopted above technical scheme, pawl mobile by shifting fork mechanism, make three pusher dogs that contact with the conical surface of pawling rotate, because the radially dog and the main shaft of pusher dog offset, so in the pusher dog rotation process, under the effect of radially dog and main shaft thrust, produce relative displacement between pusher dog cover and the main shaft, and the pusher dog cover is relatively-stationary with pull bar, like this, the collet of pull bar and pull bar front end all produces relative displacement with main shaft, finally makes chuck to finish under the bell-mouthed effect of front-end of spindle to clamp or unclamps action.Adopt three pusher dogs to spur pull bar and move, make the suffered pulling force of pull bar bigger more even, guaranteed that collet clamping labor and materials are solid and reliable, have advantages such as simple in structure, that cost is low, clamping is solid and reliable.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the right view of Fig. 1.(in order to express clearly the clipped parts)
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is made a detailed explanation.
Embodiment 1:
As Fig. 1, a kind of automatic clamping device that is used for lathe shown in Figure 2, comprise main spindle box 2, main shaft 17, pull bar 16, chuck 1, shifting fork mechanism and cam executing agency, described main shaft 17 front ends are provided with chuck 1, main shaft 17 rear ends are provided with belt wheel 4 and are connected with motor, pull bar 16 is set in the main shaft 17, pull bar 16 front ends are fixedlyed connected with chuck 1, be arranged with on the described main shaft 17 and pawl 12 and pusher dog cover 9, described pawling 12 is connected with shifting fork mechanism, shifting fork mechanism is connected with cam executing agency on the lathe, be connected with three pusher dogs 7 by bearing pin 72 on the described pusher dog cover 9, the pawl head 71 of described pusher dog 7 front ends contacts with 12 the conical surface of pawling, and pusher dog 7 is provided with radially dog 73, and radially dog 73 offsets with main shaft 17 and contacts, wherein, the anchor ring of described three pusher dogs, 7 trisection pusher dogs cover 9, described 3 bearing pins 72 are in same plane, and described pusher dog 7 rotates around bearing pin 72, described pusher dog cover 9 is fixing with respect to pull bar 16, and described pusher dog cover 9 is connected with moving axially with respect to main shaft 17 is circumferentially fixing.
In the present embodiment, above-mentioned shifting fork mechanism is located at main spindle box 2 outsides, comprise and connect 12 the bearing 6 of pawling, bearing 6 inner rings with pawl 12 fixing, bearing 6 outer rings are hinged with group circle 5 by locating piece 51 and bolt 52, described group of circle 5 one ends and fixed bar 3 are hinged, fixed bar 3 and main spindle box 2 relative fixed, described group of circle 5 other ends flexibly connect connecting rod A13, connecting rod A13 is connected with the connecting rod B14 that rotation is arranged on the main spindle box 2, connecting rod B14 one end and connecting rod A13 flexibly connect, and the connecting rod B14 other end is provided with shifting block 15 and is connected with cam executing agency on the lathe; The above-mentioned pull bar 16 rear ends nut 8 that has been threaded, nut 8 offset with pusher dog cover 9 and contact, and described radially dog 73 offsets with main shaft 17 ends and contacts; Above-mentioned main shaft 17 rear ends are provided with kidney slot 10, and described pusher dog cover 9 is provided with the bolt 11 that matches with kidney slot 10; Above-mentioned connecting rod A13 by spherical plain bearing rod end respectively with dial circle 5 and be connected with connecting rod B14.

Claims (5)

1. automatic clamping device that is used for lathe, comprise main spindle box (2), main shaft (17), pull bar (16), chuck (1), shifting fork mechanism and cam executing agency, described main shaft (17) front end is provided with chuck (1), pull bar (16) is set in the main shaft (17), pull bar (16) front end is fixedlyed connected with chuck (1), it is characterized in that, be arranged with on the described main shaft (17) and pawl (12) and pusher dog cover (9), described pawling (12) is connected with shifting fork mechanism, shifting fork mechanism is connected with cam executing agency on the lathe, described pusher dog cover (9) is gone up and is connected with three pusher dogs (7) by bearing pin (72), the pawl head (71) of described pusher dog (7) front end contacts with the conical surface of pawl (12), pusher dog (7) is provided with radially dog (73), radially dog (73) offsets with main shaft (17) and contacts, wherein, described pusher dog cover (9) is fixing with respect to pull bar (16), and described pusher dog cover (9) is connected with moving axially with respect to main shaft (17) is circumferentially fixing.
2. a kind of automatic clamping device that is used for lathe according to claim 1, it is characterized in that, described shifting fork mechanism is located at main spindle box (2) outside, comprise the bearing (6) that connects pawl (12), bearing (6) inner ring is fixing with pawl (12), bearing (6) outer ring is hinged with group circle (5) by locating piece (51) and bolt (52), described group of circle (5) one ends and fixed bar (3) are hinged, fixed bar (3) and main spindle box (2) relative fixed, described group of circle (5) other end flexibly connects connecting rod A (13), connecting rod A (13) is connected with the connecting rod B (14) that rotation is arranged on the main spindle box (2), connecting rod B (14) one ends and connecting rod A (13) flexibly connect, and connecting rod B (14) other end connects cam executing agency.
3. a kind of automatic clamping device that is used for lathe according to claim 2, it is characterized in that, described pull bar (16) the rear end nut (8) that has been threaded, nut (8) offsets with pusher dog cover (9) and contacts, and described radially dog (73) offsets with main shaft (17) end and contacts.
4. a kind of automatic clamping device that is used for lathe according to claim 2 is characterized in that, described connecting rod A (13) is connected with connecting rod B (14) with group circle (5) respectively by spherical plain bearing rod end.
5. according to each described a kind of automatic clamping device that is used for lathe in the claim 1 to 4, it is characterized in that described main shaft (17) rear end is provided with kidney slot (10), described pusher dog cover (9) is provided with the bolt (11) that matches with kidney slot (10).
CNU2008200855264U 2008-04-15 2008-04-15 Automatic clamping apparatus for machine tool Expired - Fee Related CN201198092Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200855264U CN201198092Y (en) 2008-04-15 2008-04-15 Automatic clamping apparatus for machine tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200855264U CN201198092Y (en) 2008-04-15 2008-04-15 Automatic clamping apparatus for machine tool

Publications (1)

Publication Number Publication Date
CN201198092Y true CN201198092Y (en) 2009-02-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008200855264U Expired - Fee Related CN201198092Y (en) 2008-04-15 2008-04-15 Automatic clamping apparatus for machine tool

Country Status (1)

Country Link
CN (1) CN201198092Y (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102581640A (en) * 2012-03-20 2012-07-18 无锡市欧泰数控机床有限公司 Mechanical pushing device for automatic chuck
CN102837202A (en) * 2012-09-18 2012-12-26 山东神戎电子股份有限公司 Reinforced lockable device
CN102886700A (en) * 2012-03-05 2013-01-23 陈江源 Suspension type pneumatic clamping mechanism for instrument lathe
CN102962706A (en) * 2012-11-16 2013-03-13 安阳鑫盛机床股份有限公司 Oval turning lathe fixture for use in piston processing of marine diesel engine
CN103769928A (en) * 2014-02-28 2014-05-07 泉州利达机器有限公司 Novel oil cylinder clamping device
CN105397128A (en) * 2015-12-24 2016-03-16 成都好特精密机械有限公司 Floating clamping mechanism for bars
CN106670756A (en) * 2016-11-17 2017-05-17 苏州冠浩斯精密机械有限公司 Valve deck clamp of solenoid valve magnetic isolation component assembly machine
CN109822377A (en) * 2019-01-21 2019-05-31 吴军龙 A kind of intermediate axis processing machine head and the machining tool using it

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102886700A (en) * 2012-03-05 2013-01-23 陈江源 Suspension type pneumatic clamping mechanism for instrument lathe
CN102886700B (en) * 2012-03-05 2014-12-17 陈江源 Suspension type pneumatic clamping mechanism for instrument lathe
CN102581640A (en) * 2012-03-20 2012-07-18 无锡市欧泰数控机床有限公司 Mechanical pushing device for automatic chuck
CN102837202A (en) * 2012-09-18 2012-12-26 山东神戎电子股份有限公司 Reinforced lockable device
CN102962706A (en) * 2012-11-16 2013-03-13 安阳鑫盛机床股份有限公司 Oval turning lathe fixture for use in piston processing of marine diesel engine
CN103769928A (en) * 2014-02-28 2014-05-07 泉州利达机器有限公司 Novel oil cylinder clamping device
CN105397128A (en) * 2015-12-24 2016-03-16 成都好特精密机械有限公司 Floating clamping mechanism for bars
CN106670756A (en) * 2016-11-17 2017-05-17 苏州冠浩斯精密机械有限公司 Valve deck clamp of solenoid valve magnetic isolation component assembly machine
CN106670756B (en) * 2016-11-17 2018-10-09 邹蒙生 Valve deck fixture of the solenoid valve every magnetic assembly assembly machine
CN109822377A (en) * 2019-01-21 2019-05-31 吴军龙 A kind of intermediate axis processing machine head and the machining tool using it
CN109822377B (en) * 2019-01-21 2021-03-23 吴军龙 Intermediate shaft machining machine head and machining machine tool using same

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090225

Termination date: 20150415

EXPY Termination of patent right or utility model