CN202239721U

CN202239721U - Clamping device

Info

Publication number: CN202239721U
Application number: CN2011202621770U
Authority: CN
Inventors: 李理
Original assignee: KUNSHAN YICHENG TOOL CO Ltd
Current assignee: KUNSHAN YICHENG TOOL CO Ltd
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2012-05-30
Anticipated expiration: 2021-07-22

Abstract

The utility model discloses a clamping device; an axial hexagon slot and a round slot are sequentially arranged on the inner side of a mandrel; a radial rectangular hole penetrates through the side wall of the hexagon slot; a ball body is arranged in the rectangular hole of the mandrel; the ball body is locally exposed out of the outer side of the hexagon slot and does not fall off; a sliding bush is inserted into the round slot of the mandrel, one end of the sliding bush is capable of elastically and locally extending into the hexagon slot; an outer sleeve is sleeved on the periphery of the mandrel and is capable of doing elastic reciprocating motion relative to the mandrel, and an inner sleeve is arranged between the outer sleeve and the mandrel and is capable of being elastically propped against the ball body and moving along the length direction of the rectangular hole; according to the clamping device, a work piece can be quickly replaced; when the work piece is inserted into the hexagon slot of the mandrel, the inner sleeve can automatically push the ball body to clamp a groove at the tail of the work piece without manually pulling out the outer sleeve, so that the connection between the mandrel and the work piece can be easily completed and the use times of the outer sleeve is reasonably reduced; and when being replaced, the work piece is pushed out by a strong spring and simultaneously does not fall off under the magnetic attachment of the sliding bush, so that the times of falling off and picking up are reduced.

Description

Clamping device

Technical field

The utility model relates to the technical field of chuck, is meant a kind of clamping device that is applicable to the hexagon workpiece especially.

Background technology

In No. the 4th, 900,202, U.S. and the 5th; Disclose a kind of chuck in the patent case such as 013, No. 194, in order to quick clamping, replacement hexagon workpiece; Being configured to of this chuck: flexible overcoat 40 in mandrel 10 outer race, let overcoat 40 relative mandrels 10 do the reciprocating type displacement motion, an end axial depression of mandrel 10 has holding tank 72; Can put into hexagonal workpiece 60 in the groove, and the position of arcuate furrow 61 is provided with one or above ball-and-socket 73 on the relative workpiece 60 of cell wall of holding tank 72, each ball-and-socket 73 is through to holding tank 72 side wall surfaces from mandrel 10 outer circumference surfaces; Each ball-and-socket holds single spheroid 20; Holding tank 72 side wall surfaces are exposed in spheroid 20 parts, and can fall into groove 61 the insides of workpiece 60, when overcoat 40 elastic recovery original positions; Its inside circumference face is provided with the outstanding ring rib 44 in relative ball-and-socket 73 positions, and its restriction spheroid 20 blocks the holding tank 72 that workpiece 60 must not leave mandrel 10 arbitrarily.

But overcoat 40 is a normality with the ejection state, causes workpiece 60 relative mandrels 10 to be done and inserts or detach when moving, and must back out overcoat 40 by manpower, and the whole operation process is quite loaded down with trivial details, very inconvenience in the use.When especially detaching workpiece, spheroid 20 is radially outwards pushed open by workpiece 60 along groove 61 gradients of workpiece, can increase the burden that detaches of workpiece; In order to alleviate the burden that detaches, the U.S. the 6th, 325; No. 393 the patent case discloses another chuck scheme, and overall structure is similar to aforementioned chuck, and arranges to have sliding sleeve (Follower) in the holding tank depths of mandrel; This sliding sleeve possesses flexible kinetic energy, can when workpiece detaches, promote the opening of workpiece bullet to holding tank voluntarily.Because chuck does not have resistance when the structure of workpiece, so workpiece can be ejected the mandrel outside and dropped on the ground, picks up again, uses inconvenience.

The utility model content

In order to overcome above-mentioned defective, the utility model provides a kind of clamping device, need not back out overcoat when this clamping device uses, and is free of a burden when workpiece withdraws from, and also is difficult for dropping the end of on, easy to use.

The utility model is in order to solve the technical scheme that its technical problem adopts: a kind of clamping device; Comprise mandrel, spheroid, sliding sleeve, overcoat and interior cover, mandrel one end to other end inboard is provided with an axial hex slot and a circular groove successively, runs through on the hex slot interlude of this mandrel to be provided with radially an elongated hole; Spheroid places in the elongated hole of mandrel; The spheroid part is exposed the hex slot periphery and is not dropped, and sliding sleeve is plugged in the circular groove of mandrel, and one of which end flexibly part extend in the hex slot; Overcoat is enclosed within the mandrel periphery; Overcoat mandrel is relatively done flexible reciprocating motion, in overlap between overcoat and mandrel, interior cover can elasticity props up spheroid and moves along the length direction of elongated hole.

Further improvement as the utility model; Wherein can be the flexibly local structure that extend in the hex slot of sliding sleeve one end be: have an axial through hole on the sliding sleeve, the end that this through hole leads to the hex slot of mandrel is sealed by a magnet assembly, is provided with a brute spring in the through hole of sliding sleeve; Brute spring one end withstands magnet assembly; The other end props up the circular groove bottom surface, is embedded with the interior jump ring of a circle convex on the mandrel circular groove madial wall, and the sliding sleeve lateral wall is the T shape structure of an end diameter less than other end diameter; Form circle annular stepped face radially on the sliding sleeve lateral wall, the axial other end of interior jump ring backstop is in the annular stepped face of sliding sleeve.

Further improvement as the utility model; Wherein interior cover can elasticity props up spheroid: the inboard other end of overcoat fixedly is inlaid with a back and overlaps; Back cover one end face presses closer a compression spring; Compression spring one end presses closer interior cover, and interior cover one end inboard props up spheroid other end outer circumference surface.

As the further improvement of the utility model, interior cover one end inboard is the spherical of an end internal diameter greater than other end internal diameter.

Further improvement as the utility model; Wherein this overcoat inboard is provided with a ring rib, and this ring rib protrusion is positioned at the position of circumferential surface to the mandrel elongated hole, and this ring rib backstop is in spheroid one end outer circumference surface; The ring rib can also stop spheroid to leave elongated hole except the cover bullet leaves in blocking.

As the further improvement of the utility model, the mandrel periphery also is provided with an annular gasket, and this pad backstop axially clips a spring in mandrel periphery one end between ring rib and this annular gasket.

As the further improvement of the utility model, pad backstop in the structure of mandrel periphery one end is: mandrel one end periphery is embedded with jump ring outside, and this outer jump ring other end wall backstop is in the axial end of annular gasket.

Further improvement as the utility model; The hex slot periphery is exposed in the spheroid part and the structure that do not drop is: the elongated hole madial wall is spherical in shape on the mandrel; Also spherical in shape of interior cover one end inboard; Spheroid just is positioned at the space that the spherical of elongated hole and cover forms, this space along the opening diameter of mandrel radial outside less than sphere diameter.

The beneficial effect of the utility model is: every afterbody is formed with the workpiece of one groove; When inserting the hex slot of mandrel; Do not need manually to pull out overcoat, cover promotes the groove that spheroid blocks the workpiece afterbody voluntarily in just letting, and accomplishes the connecting moves of mandrel and workpiece easily.Owing to overlap pushing of elastic force in spheroid receives, can walk automatically along the elongated hole medial surface, need not back out overcoat when therefore inserting workpiece, just can accomplish the action that workpiece inserts clamping device, rationally reduce the access times of overcoat.Clamping device is when changing workpiece; Must pull out overcoat earlier, make workpiece release power and outside clamping device, move, and it can not drop under the magnetic effect of sliding sleeve by brute spring; Spheroid breaks away from the groove of workpiece and oppositely pushes interior cover open; Can take and replace fast required workpiece this moment easily, because workpiece receives the attraction and the active force that receives the anti-body of pushing the ball of workpiece of magnet assembly, these two power summations are got up just to have offset workpiece and received the brute spring thrust of bullet outward; Reduce the number of times that drops and pick up, more save time during use.

Description of drawings

Fig. 1 is the decomposing state sketch map of the utility model;

Fig. 2 is the sectional axonometric drawing of the utility model;

Fig. 3 is that first workpiece of the utility model inserts view;

Fig. 4 is that second workpiece of the utility model inserts view;

Fig. 5 is that the 3rd workpiece of the utility model inserts view;

Fig. 6 is that the workpiece of the utility model takes out view;

Fig. 7 is the utility model and screwdriver head connection status sketch map;

Fig. 8 existing structure principle schematic.

Below accompanying drawing is explained

60---workpiece 61---groove 72---holding tank

73---ball-and-socket 10---mandrel 11---cylindrical section

12---hex slot 13---circular groove 14---elongated hole

Jump ring in the 20---spheroid 30---sliding sleeve 31---

32---brute spring 33---through hole 34---magnet assembly

The outer jump ring 42---pad of 40---overcoat 41---

Cover in the 43---spring 44---ring rib 50---

Cover 62---screwdriver head behind the 51---compression spring 52---

The specific embodiment

Embodiment: a kind of clamping device, comprise mandrel 10, spheroid 20, sliding sleeve 30, overcoat 40 and interior cover 50, mandrel 10 external forms possess given shape; Be applicable to the drive end of pneumatic (electronic or manual) instrument; And go out to form the cylindrical section 11 that contracts in the diameter at mandrel 10 1 distal process vertically, these cylindrical section 11 inboards are provided with hex slot 12, hex slot bottom and a circular groove 13 coaxial communication; Be provided with the flexible sliding sleeve 30 of tool in the circular groove 13; Circular groove 13 medial surfaces are embedded jump ring 31 in, in this jump ring 31 backstops in sliding sleeve 30 outside end faces make sliding sleeve not bullet but can locally get in the hex slot 12 from mandrel 10, laterally run through being provided with radially an elongated hole 14 on these hex slot 12 sidewalls; Spheroid 20 places in the elongated hole 14 of mandrel; Mandrel 10 periphery are arranged with overcoat 40, and overcoat 40 backstops deviate from the outside of mandrel in spheroid, and restriction spheroid 20 must not break away from elongated hole 14; This elongated hole 14 is positioned at the A/F at hex slot 12 inner surface places less than spheroid 20 diameters; So spheroid 20 parts are exposed hex slot 12 medial surfaces and but can not dropped, and elongated hole 14 is positioned at the A/F of mandrel 10 lateral surfaces greater than spheroid 20 diameters, cause the spheroid 20 can be along the length direction roll displacement of elongated hole;

Sliding sleeve 30 is a hollow tube; Inner form along the pipe range direction before and after unobstructed through hole 33, the openend that this through hole 33 leads to mandrel 10 hex slot 12 is installed with columned magnet assembly 34, through hole 33 other ends be enclosed within brute spring 32 outsides; Brute spring 32 1 ends withstand magnet assembly 34; Thereby the other end props up circular groove 13 bottom surfaces and produces elastic force, makes sliding sleeve 30 have the kinetic energy of bullet to the direction of hex slot 12, and sliding sleeve 30 periphery are the step-like periphery of an end diameter less than other end diameter; The annular stepped face of two periphery adjoiners props up interior jump ring 31, stops sliding sleeve 30 to eject circular groove 13;

Overcoat 40 is a ring body; Can be enclosed within cylindrical section 11 periphery of mandrel 10, its external sleeve 40 is in the face of the position protrusion one circle ring rib 44 of mandrel 10 elongated holes 14, this ring rib 44 over against the one side backstop of mandrel 10 in the spheroid lateral wall; Can stop spheroid 20 to leave elongated hole 14; Be arranged with the pad 42 that is the ring plate shape on the outer circumference surface of the cylindrical section 11 of mandrel 10, this pad one end backstop is folded with spring 43 in outer jump ring 41 other ends of an embedding mandrel 10 outer circumference surfaces between pad 42 and the ring rib 44; Spring 43 compressions produce elastic force, and then impel overcoat 40 relative mandrels 10 to do reciprocating and overcoat can't break away from mandrel;

Interior cover 50 also is a ring body; Interior cover is positioned at overcoat 40 and receives overcoat protection, is sheathed on cylindrical section 11 peripheries of mandrel 10 in the while, and interior cover 50 axially just overlaps between 52 at ring rib 44 and back; Back cover 52 build-ins are in the medial surface of overcoat 40; The interior cover 50 of compression spring 51 1 ends promotion that is sheathed on the mandrel outside props up spheroid 20 other ends and props up back cover one end face, encircles rib 44 backstops in interior cover 50 axial ends, is used for limiting the displacement of the relative mandrel 10 of interior cover.

When inserting workpiece; Workpiece 60 is bestowed external force, make the hexagonal afterbody of workpiece be inserted into hex slot 12 the insides of mandrel 10, the local spheroid 20 that exposes elongated hole 14 of the guide face promotion that workpiece 60 tail ends tilt is partial to back cover 52 directions along elongated hole and is moved; Cover 52 moves and leaves original position cover 50 relative to the back in driving simultaneously; Pushing simultaneously and compressing spring 51 and make its distortion produce the required elastic force that resets, along with workpiece 60 continue deeply can contact the magnet assembly 34 that sliding sleeve 30 front ends of hex slot 12 are exposed in the part; And be pulled together each other; Workpiece further drives sliding sleeve 30 extruding brute springs 32 and recedes into 13 li of circular grooves simultaneously, faces elongated hole 14 up to the groove 61 of workpiece 60, and this moment, spheroid 20 was oppositely promoted by interior cover 50 in elongated hole 14; It is got back to ring rib 44 correspondence positions and blocks groove 61, stops workpiece 60 from clamping device, arbitrarily not extract out.When extracting workpiece out, under the effect of external force, pull out a segment distance to overcoat 40, ring rib 44 is moved relative to pad 42, when extrusion spring 43 makes its distortion produce reseting elasticity, make spheroid 20 no longer receive the restriction of ring rib 44.Because the elastic force after the elastic force of brute spring 32 accumulations stretches greater than compression spring 51; Withdraw from toward hex slot 12 opening directions so sliding sleeve 30 promotes workpiece 60, the gradient through groove 61 forces spheroid 20 be partial to back cover 52 directions once more to move, overlap 50 in oppositely pushing open simultaneously; Compression spring 51 is squeezed; Put aside the required elastic force that resets, up to sliding sleeve 30 stoped by interior jump ring 31 and local get into hex slot 12 till, simultaneously because magnet assembly 34 sorption workpiece 60; Workpiece can not ejected mandrel and dropped, and can take easily and replace required workpiece 60 fast this moment.

Claims

1. clamping device; Comprise mandrel, spheroid, sliding sleeve, overcoat and interior cover; Mandrel one end to other end inboard is provided with an axial hex slot and a circular groove successively; Run through being provided with radially an elongated hole on the hex slot interlude of this mandrel, spheroid places in the elongated hole of mandrel, and the spheroid part is exposed the hex slot periphery and do not dropped; Sliding sleeve is plugged in the circular groove of mandrel; One of which end flexibly part extend in the hex slot, and overcoat is enclosed within the mandrel periphery, and overcoat mandrel is relatively done flexible reciprocating motion; In overlap between overcoat and mandrel, interior cover can elasticity props up spheroid and moves along the length direction of elongated hole.

2. clamping device according to claim 1; It is characterized in that: wherein can be the flexibly local structure that extend in the hex slot of sliding sleeve one end be: have an axial through hole on the sliding sleeve, the end that this through hole leads to the hex slot of mandrel is sealed by a magnet assembly, is provided with a brute spring in the through hole of sliding sleeve; Brute spring one end withstands magnet assembly; The other end props up the circular groove bottom surface, is embedded with the interior jump ring of a circle convex on the mandrel circular groove madial wall, and the sliding sleeve lateral wall is the T shape structure of an end diameter less than other end diameter; Form circle annular stepped face radially on the sliding sleeve lateral wall, the axial other end of interior jump ring backstop is in the annular stepped face of sliding sleeve.

3. clamping device according to claim 1; It is characterized in that: cover can elasticity props up spheroid and along the structure that the length direction of elongated hole moves is wherein: the inboard other end of overcoat fixedly is inlaid with a back and overlaps; Back cover one end face presses closer a compression spring; Compression spring one end presses closer interior cover, and interior cover one end inboard props up spheroid other end outer circumference surface.

4. clamping device according to claim 3 is characterized in that: interior cover one end inboard is the spherical of an end internal diameter greater than other end internal diameter.

5. clamping device according to claim 1 is characterized in that: wherein this overcoat inboard is provided with a ring rib, and this ring rib protrusion is positioned at the position of circumferential surface to the mandrel elongated hole, and this ring rib backstop is in spheroid one end outer circumference surface.

6. clamping device according to claim 5 is characterized in that: the mandrel periphery also is provided with an annular gasket, and this pad backstop axially clips a spring in mandrel periphery one end between ring rib and this annular gasket.

7. clamping device according to claim 1 is characterized in that: pad backstop in the structure of mandrel periphery one end is: mandrel one end periphery is embedded with jump ring outside, and this outer jump ring other end wall backstop is in the axial end of annular gasket.

8. clamping device according to claim 1; It is characterized in that: the hex slot periphery is exposed in the spheroid part and the structure that do not drop is: the elongated hole madial wall is spherical in shape on the mandrel; Also spherical in shape of interior cover one end inboard; Spheroid just is positioned at the space that the spherical of elongated hole and cover forms, this space along the opening diameter of mandrel radial outside less than sphere diameter.