CN207508316U

CN207508316U - Floating clamping device

Info

Publication number: CN207508316U
Application number: CN201721162925.1U
Authority: CN
Inventors: 许波; 尚洪宝; 李黎
Original assignee: CHONGQING CHUAN INSTRUMENT CONTROL VALVE Co Ltd
Current assignee: CHONGQING CHUAN INSTRUMENT CONTROL VALVE Co Ltd
Priority date: 2017-09-11
Filing date: 2017-09-11
Publication date: 2018-06-19
Anticipated expiration: 2027-09-11

Abstract

The utility model discloses a kind of floating clamping devices, multijaw collet including being equipped with multiple claws, the device further includes the floating bracket that corresponding claw is corresponded and be articulated with to claw, and at least two are hinged on each floating bracket for squeezing the floating pawl of workpiece；The utility model can form the multipoint clamping to workpiece, the deformation that workpiece generates when reducing clamping, and clamp more secured, guarantee machining accuracy.

Description

Floating clamping device

Technical field

The utility model is related to part processing technique field, more particularly to a kind of floating clamping device.

Background technology

For the angle of mechanical processing, because being also easy to produce deformation when clamping or cutting, processing in mechanical processing process Resile shape after into rear or release chucking power, is exactly thin-wall part；Thin-wall part is in every profession and trade using extensive；Due to thin-wall part Difficulty of processing is larger, and part circularity cannot be guaranteed after turnery processing, and the following process on the basis of this circularity cannot reach Required precision is a very troublesome problem.

Have at this stage for the method for clamping of thin-wall part mechanical processing following several：Three-jaw chuck or four-jaw independent chuck；Three Weld plate on claw clip head or four-jaw independent chuck, and go out by part outer diameter or internal diameter size the platform of same diameter in metal wooden handcart Rank, to ensure that contact area during clamping increases the deformation to reduce part；With expanding arbor swelling endoporus etc..Since part exists Outer diameter or endoporus are not the circle of standard during green state (forging or casting), and because the variation of diameter needs to process different gold Belong to plate or expanding arbor it is mating, cannot make when clamping thin-wall part part shape or endoporus uniform force without leading to thin-walled The deformation of part, therefore these types of mode cannot well solve clamping deformation of the thin-wall part in mechanical processing.

Utility model content

In view of this, the purpose of this utility model is to provide a kind of floating clamping devices, can form the multiple spot to workpiece Clamping, the deformation that workpiece generates when reducing clamping, and clamp more secured, guarantee machining accuracy.

The floating clamping device of the utility model, the multijaw collet including being equipped with multiple claws, the device are further included and are blocked Pawl corresponds and is articulated with the floating bracket of corresponding claw, and at least two are hinged on each floating bracket for squeezing The floating pawl of workpiece.

Further, the floating pawl is equipped at least two pressure arms for being in direct contact with being extruded workpiece.

Further, the floating pawl is in " C " font, and two extensions of the floating pawl form the pressure arm.

Further, the floating bracket is articulated with claw by the vertical axes I perpendicular to claw upper surface.

Further, the upper surface of the claw is equipped with recessed for installing the bracket groove of floating bracket and positioned at bracket groove And the axis hole I coordinated with vertical axes I；The width of the bracket groove is more than the width of floating bracket, is used for being formed for described floating The gap of dynamic holder pivots.

Further, the floating pawl is articulated with floating bracket by the vertical axes II perpendicular to floating bracket upper surface.

Further, the both sides of the floating bracket length direction are arranged with the axis hole II for coordinating with vertical axes II, And the position in outside or inside that the floating bracket upper surface is located at axis hole II is equipped with to limit floating pawl rotation amplitude Limited block.

Further, the limited block is raised up by floating bracket upper surface and is formed.

Further, the vertical axes I and/or vertical axes II are positioning pin or positioning bolt structure.

Further, the multijaw collet is to set there are three the three-jaw chuck structure of claw or set four paws there are four claw Chuck structure.

The beneficial effects of the utility model：

The floating clamping device of the utility model can carry out rational modification on the architecture basics of existing multijaw collet, Claw adds at least two floating pawls by floating bracket, so as to increase clamping site, can form the multipoint clamping to workpiece, It is more uniformly distributed the chucking power that workpiece is born, and floating bracket can rotate in a certain range with floating pawl, be suitable for work The situation of part blank surface out-of-flatness, the deformation that workpiece generates when reducing clamping, and clamp more secured, guarantee processing essence Degree.

Description of the drawings

The utility model is further described with reference to the accompanying drawings and examples：

Fig. 1 is the floating clamping device structure diagram of the first structure of the utility model；

Fig. 2 is the structure diagram of the claw of the utility model the first structure；

Fig. 3 is the structure diagram of the floating bracket of the utility model the first structure；

Fig. 4 is the structure diagram of the floating pawl of the utility model the first structure；

Connection diagrams of the Fig. 5 for the claw of the first structure of the utility model, floating bracket and floating pawl；

Fig. 6 is the floating clamping device structure diagram of second of structure of the utility model.

Specific embodiment

As shown in Figures 1 to 6：The floating clamping device of the present embodiment, the multijaw collet 1 including being equipped with multiple claws 2 should Device further includes the floating bracket 3 that corresponding claw 2 is corresponded and be articulated with to claw 2, is hinged on each floating bracket 3 There are at least two (the present embodiment is two) for squeezing the floating pawl 4 of workpiece 9；Multijaw collet can be card there are three existing set The three-jaw chuck structure (the present embodiment use three-jaw chuck structure) of pawl 2 sets four-jaw independent chuck structure there are four claw 2, when Can also be so by chuck and the structure of other similar multijaw collets that the gripper jaw being circumferentially uniformly arranged is formed；Floating bracket 3 In strip, floating pawl 4 can the clamping workpiece outer circle structure of clamping workpiece outer circle (Fig. 1 be) or support inner hole of workpiece (Fig. 6 is i.e. To support the structure of inner hole of workpiece)；Due to being connected by articulated manner, floating bracket 3 can rotate on claw 2, and floating pawl 4 can It is rotated in floating bracket 3, thus forms double floating structures；The present apparatus can be closed on the architecture basics of existing multijaw collet Reason is improved, and claw 2 adds at least two floating pawls 4 by floating bracket 3, so as to increase clamping site, can be formed to workpiece Multipoint clamping, be more uniformly distributed the chucking power that workpiece is born, and floating bracket 3 and floating pawl 4 can be in a certain range Rotation is suitable for the situation of workpiece blank surface irregularity, the deformation that workpiece generates when reducing clamping, and clamps more firm Gu ensure machining accuracy.

In the present embodiment, the floating pawl 4 is equipped at least two pressure arms 41 for being in direct contact with being extruded workpiece；Pressure Arm 41 and the contact jaw of workpiece can set several flexible pieces, to improve the damage degree of clamping effect, reduction to workpiece surface；It is described Floating pawl 4 is in " C " font, and two extensions of the floating pawl 4 form the pressure arm 41, pressure arm 41 and the whole one of floating pawl 4 Molding has higher structural strength, manufacture easy to process；Two pressure arms 41 on same floating pawl 4 are symmetrical arranged；The structure makes The single-point clamping for obtaining original claw 2 becomes clampings (bite is at least original 4 times) of floating more, makes the clamping stress of workpiece more Uniformly, it is more firm.

In the present embodiment, the floating bracket 3 is articulated with claw 2 by the vertical axes I 5 perpendicular to 2 upper surface of claw； Vertical axes I 5 can be positioning pin or positioning bolt structure；Vertical axes I 5 while the rotation axis as floating bracket 3, are preferably located at The center of floating bracket 3；The upper surface of the claw 2 be equipped with it is recessed for install the bracket groove 21 of floating bracket 3 and The axis hole I 22 coordinated positioned at bracket groove 21 and with vertical axes I 5；The width of the bracket groove 21 is more than the width of floating bracket 3, To form the gap being used for for the floating bracket 3 rotation；It is convenient for the location and installation of floating bracket 3 by forming bracket groove；Branch Rack slot limits the rotational angle of floating bracket 3, thus prevents the improper overturning of floating bracket 3 not, keeps the smooth folder of workpiece It holds；Make clamping workpiece convenient.

In the present embodiment, the floating pawl 4 is articulated with floating by the vertical axes II 6 perpendicular to 3 upper surface of floating bracket Dynamic stent 3；Vertical axes II 6 can be positioning pin or positioning bolt structure；Vertical axes II 6 while the rotation axis as floating pawl 4, It is preferably located at the center of floating pawl 4；The both sides of 3 length direction of floating bracket be arranged with for vertical axes II 6 The axis hole II 31 of cooperation, and 3 upper surface of the floating bracket is located at the outside (one i.e. far from multijaw center of collet of axis hole II Side) or the position of inside (i.e. towards the side of multijaw center of collet) be equipped with for the limiting that limits 4 rotation amplitude of floating pawl Block 32；The position of limited block 32 is related to Workpiece clamping mode, and limited block 32 is set on outside in Fig. 1, and limited block 32 is set in Fig. 6 Outside；Gap is equipped between limited block 32 and floating pawl 4；The limited block 32 is preferably raised up by 3 upper surface of floating bracket It is formed, structural strength is high, easy to process.

Finally illustrate, above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng The utility model is described in detail according to preferred embodiment, it will be understood by those of ordinary skill in the art that, it can be to this The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model It encloses, should all cover in the right of the utility model.

Claims

1. a kind of floating clamping device, the multijaw collet including being equipped with multiple claws, it is characterised in that：The device is further included and is blocked Pawl corresponds and is articulated with the floating bracket of corresponding claw, and at least two are hinged on each floating bracket for squeezing The floating pawl of workpiece；The floating pawl is articulated with floating bracket by the vertical axes II perpendicular to floating bracket upper surface；Institute The both sides for stating floating bracket length direction are arranged with axis hole II for coordinating with vertical axes II, and the floating bracket upper table The position in outside or inside that face is located at axis hole II is equipped with the limited block for limiting floating pawl rotation amplitude.

2. floating clamping device according to claim 1, it is characterised in that：The floating pawl be equipped at least two be used for It is extruded the pressure arm that workpiece is in direct contact.

3. floating clamping device according to claim 2, it is characterised in that：The floating pawl is in " C " font, the floating Two extensions of pawl form the pressure arm.

4. floating clamping device according to claim 1, it is characterised in that：The upper surface of the claw is equipped with recessed use In the bracket groove of installation floating bracket and the axis hole I coordinated positioned at bracket groove and with vertical axes I；The width of the bracket groove is more than The width of floating bracket, to form the gap being used for for floating bracket rotation.

5. floating clamping device according to claim 1, it is characterised in that：The limited block by floating bracket upper table towards On convex to form.

6. floating clamping device according to claim 4, it is characterised in that：The vertical axes I and/or vertical axes II are fixed Position pin or positioning bolt structure.

7. floating clamping device according to any one of claims 1 to 6, it is characterised in that：The multijaw collet be equipped with The three-jaw chuck structure of three claws sets four-jaw independent chuck structure there are four claw.