CN2465845Y

CN2465845Y - Double scroll three-jaw concentric chuck

Info

Publication number: CN2465845Y
Application number: CN 01205911
Authority: CN
Inventors: 张和强
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-26
Filing date: 2001-02-26
Publication date: 2001-12-19
Anticipated expiration: 2011-02-26

Abstract

The utility model relates to a double scroll three-jaw concentric chuck composed of a chuck body, an inner chuck wire, an outer chuck wire, an inner clamping pawl, an outer clamping pawl, a rotary ring, a linked bevel gear engaged with the bevel gears of the inner and the outer chuck wires and arranged on the rotary ring, and a connection chuck. The sliding bases of the inner and the outer clamping pawls are arranged in the sliding slots of the chuck body, and are in drive fit with the threads of the inner and the outer chuck wires; when the utility model clamps a work piece for turning and processing, the forces of the work piece acted by the outer and the inner clamping pawls are equal, and the directions are opposite. Thus, the clamped work piece with a thin wall is not easy to deform, which ensures the quality of turning and processing.

Description

The two scroll chucks of self-centering

The utility model relates to the processing thin-walled workpiece of a kind of turning two scroll chucks of self-centering.

When the processing thin-walled workpiece of turning existing scroll chuck holding workpiece no matter be interior pawl clamping or outside the pawl clamping, all can make workpiece generation geometry deformation make workpiece finished size error big, even unqualified.In order to prevent piece-holder distortion, when the bowlder need holding workpiece outside process in advance one with workpiece in justify the minor axis that adapts and put into the workpiece endoporus in order to supporting workpiece; Need the interior bowlder of holding workpiece to process a ring set that adapts with excircle of workpiece in advance, place work cylindrical place that the solid shape of workpiece is prevented the piece-holder distortion ring set.Its operation of this solution not only bothers but also take to advance effort, waste material, nor can thoroughly eliminate the generation of piece-holder metaboly, and the turning crudy of workpiece still is difficult for guaranteeing.

The purpose of this utility model provides the processing thin-walled workpiece usefulness of a turning, is difficult for deforming the two scroll chucks of the self-centering that turning crudy, precision are easy to guarantee after the piece-holder.

The two scroll chucks of self-centering by have on the interior parcel of tooth pitch helical tooths such as having on the chuck body that is evenly equipped with three radial grooves on the card, the card, the card with interior parcel helical tooth tooth pitch, the outer parcel of direction same-handed tooth, interior claw, outer claw, be loaded on chuck body outer rim place change, be loaded on the interlock bevel gear in the change and the terminal pad that connects with chuck body constitutes, chuck body has the cantilevered axle of whole connection.Interior parcel has the whole bevel gear that connects, and interior parcel is loaded on the chuck body cantilevered axle by bearing, and outer parcel is sleeved on the interior parcel.Be shaped on the umbrella teeth on the outer parcel card relative with interior parcel bevel gear, interior parcel bevel gear and outer parcel umbrella teeth mesh with the interlock bevel gear.Inside and outside claw is fastened on the inside and outside claw slide, and inside and outside claw slide is loaded in the chuck body chute and cooperates with the transmission of inside and outside parcel screw thread.Rotate inside and outside parcel, inside and outside claw slide drive the lower edge chute do mutually near or workpiece clamped or unclamp away from slippage.

For the inside and outside round degree of eccentricity of workpiece before eliminating turning processing is processed the adverse effect of bringing to turning, further improving of the two scroll chucks of self-centering is, be equipped with the elastomer of certain rigidity in during turning processing excircles location on the claw clamping face, be equipped with elastomer on the outer claw clamping face during the interior circle of turning processing location with certain rigidity.

The two scroll chucks of self-centering inside and outside claw when the processing thin-walled workpiece of turning cooperates when workpiece clamped, power equal and opposite in direction, direction that inside and outside claw acts on the workpiece are opposite, thereby workpiece is difficult for deforming, thereby eliminated the adverse effect of turning crudy, precision being brought because of workpiece deformation, so the turning crudy of workpiece is guaranteed.

Accompanying drawing is embodiment of the present utility model, further specifies the utility model below in conjunction with embodiment.

Fig. 1 is the two scroll chuck structure charts of self-centering.

Fig. 2 is A-A profile of Fig. 1.

As shown in the figure, the two scroll chucks of self-centering by have on the interior parcel (18) of tooth pitch helical tooths such as having on the chuck body (1) that is evenly equipped with three radial grooves (2) on the card, the card, the card with interior parcel helical tooth tooth pitch, the outer parcel (17) of direction same-handed tooth, interior claw (8), outer claw (4), be loaded on chuck body outer rim place change (16), be loaded on the interlock bevel gear (10) that has crank slot (11) in the change and the terminal pad (13) that connects with chuck body constitutes, chuck body has the cantilevered axle (12) of whole connection.Interior parcel has the whole bevel gear (15) that connects, and interior parcel is loaded on the chuck body cantilevered axle by bearing (14), and outer parcel is sleeved on the interior parcel.Outer parcel is shaped on the umbrella teeth on interior parcel umbrella fluted disc face, interior parcel bevel gear, outer parcel umbrella teeth and the engagement of interlock bevel gear.Inside and outside claw is fastened on by securing member (9), (5) and is loaded on the interior inside and outside claw groove seat (6) of chuck body chute, (3), and inside and outside claw slide cooperates with the transmission of inside and outside parcel screw thread.Rotate interlock bevel gear, inside and outside parcel backward rotation with crank, inside and outside claw the drive lower edge of slide chute do mutually near or workpiece clamped or unclamp away from slippage.The present embodiment chuck carries out thin-wall workpiece to be cut to add and adopts cylindrical location man-hour, so be equipped with the resilient clamp bodies (7) that the employing spring leaf is made on the interior claw of chuck.

Claims

1, the two scroll chucks of a kind of self-centering, it is characterized in that by the chuck body that is evenly equipped with three radial grooves on the card, the interior parcel that the tooth pitch helical tooth is arranged on the card etc., have on the card and interior parcel helical tooth tooth pitch, the outer parcel of direction same-handed tooth, interior claw, outer claw, be loaded on the change at chuck body outer rim place, the terminal pad that is loaded on the interlock bevel gear in the change and connects with chuck body constitutes, chuck body has the whole cantilevered axle that connects, interior parcel is loaded on the chuck body wall suspending axis by bearing, outer parcel is sleeved on the interior parcel, interior parcel has the whole bevel gear that connects, be shaped on the umbrella teeth on the relative card of outer parcel with bevel gear, interior parcel bevel gear, outer parcel umbrella teeth and the engagement of interlock bevel gear, in, in outer claw is fastened on, on the outer claw slide, in, outer claw slide is loaded in the chuck body chute and with interior, outer parcel screw thread transmission cooperates.

2,, it is characterized in that said interior claw clamping face is equipped with elastomer by the two scroll chucks of the described self-centering of claim 1.

3, by the two scroll chucks of the described self-centering of claim 1, it is characterized in that said outer claw clamping face is equipped with elastomer.