CN202317093U

CN202317093U - Chuck for machine tool

Info

Publication number: CN202317093U
Application number: CN2011203446228U
Authority: CN
Inventors: 吴红
Original assignee: Individual
Current assignee: Zhao Zhengsong
Priority date: 2011-09-15
Filing date: 2011-09-15
Publication date: 2012-07-11
Anticipated expiration: 2021-09-15

Abstract

The utility model relates to a chuck for a machine tool. The chuck comprises a piston and a power wedge block, and is characterized in that three convex wedges inclining towards periphery are arranged on the front side surface of the piston in a central symmetry way, an inclined hole is arranged to be adjacent to the center of the external side end of the power wedge block and matched with the convex wedges in a sliding and sealed way, and an oil filling hole communicated with the inclined hole is arranged in the wall of the external side end of the power wedge block and is internally provided with a sealed oil nipple. According to the chuck, the power wedge block is sleeved on the three convex wedges in a sliding and sealed way, and drives the power wedge block to do radial displacement during axial displacement of the piston so as to clamp or loosen a workpiece; and the oil filling hole communicated with the inclined hole is arranged in the wall of the external side end of the power wedge block, and the sealed oil nipple is arranged in the oil filling hole, thereby facilitating lubrication in the using process of the chuck. Therefore, the chuck has the advantages of simple structure, better reliability and longer service life.

Description

Lathe is used chuck

Technical field

The utility model relates to a kind of lathe and uses chuck, specifically is that a kind of lathe is with pneumatic or hydraulically powered chuck.

Background technology

Existing machine tool is used chuck, comprises the power voussoir of shell, piston and band claw, and the protecgulum of power voussoir and shell is slidingly matched; Piston is cased, forms first chamber between piston rear portion and the shell, forms second chamber between piston front portion and the protecgulum; Have protruding wedge on the piston, have the skewed slot that is slidingly matched with protruding wedge on the power voussoir, a core bar front end is fixedly connected with protecgulum; The rear end is fixedly connected with shell, and the mesopore of piston cooperates with the periphery slipper seal of core bar.

The weak point of above-mentioned air spider is: the power voussoir is slidingly matched through the skewed slot of its both sides and the protruding wedge on the piston, causes it in use can't add lubricating oil, and then has influenced the service life of above-mentioned air spider.

The utility model content

The technical problem that the utility model will solve provide a kind of simple in structure, reliability better, service life is long and the lathe that is suitable for adding lubricating oil is used chuck.

For solving the problems of the technologies described above; The lathe that the utility model provides is used chuck; Comprise: piston and power voussoir are characterized in: the center is arranged with at least two protruding wedges that tilt to periphery on the leading flank of said piston, and the centre of the outboard end of contiguous said power voussoir is provided with and the said protruding wedge inclined hole that cooperates of slipper seal mutually; The end wall of the outboard end of this power voussoir is provided with the tank filler sleeve that communicates with said inclined hole, is provided with sealed fuel filler neck in this tank filler sleeve.

Further, in shell, realize axial displacement, in the excircle that is projected in this piston of said protruding wedge on the leading flank of said piston for guaranteeing said piston.

Particularly, in shell, realize axial displacement, said protruding wedging in the edge of the excircle of contiguous said piston for controlling said piston flexibly.

For guaranteeing that driving said power voussoir when the said piston axial displacement realizes radial displacement; With the action that realizes clamping or unclamping workpiece; Reduce wearing and tearing simultaneously; At least the inside and outside face that is slidingly matched that has pair of parallel on the said protruding wedge, the inside and outside face of being slidingly matched are the plane and are suitable for and are that the circle in the center of circle is tangent with the point on the central axis of said piston; Or the inside and outside face of being slidingly matched is an arc-shaped surface, and this arc-shaped surface is concentric with the circle that with the point on the central axis of said piston is the center of circle.

The bottom of the medial extremity of said power voussoir is provided with the dust excluder groove that is used to be provided with dust excluder, gets into the slipper seal mating surface of piston and shell and protecgulum to prevent impurity.

The technique effect that the utlity model has: the lathe of the utility model is with in the chuck; Power wedge slides sealing shroud is located on a plurality of protruding wedge on the said piston; When said piston axial displacement, drive said power voussoir and realize radial displacement, thereby realize the action that clamps or unclamp workpiece.Simultaneously; On the end wall of the outboard end of power voussoir, be provided with the tank filler sleeve that communicates with said inclined hole, be provided with sealed fuel filler neck in this tank filler sleeve, with convenient in use oily; Therefore, this chuck has characteristics simple in structure, that reliability better, service life is long.

Description of drawings

For the content that makes the utility model is more clearly understood, below basis specific embodiment and combine accompanying drawing, the utility model is done further detailed explanation, wherein

Fig. 1 is that lathe among the embodiment is with the Contiuum type structure of piston sketch map in the chuck;

Fig. 2 is the A-A sectional structure chart of the said piston among Fig. 1;

Fig. 3 is the enlarged drawing of the local B among Fig. 1;

Fig. 4 is that lathe among the embodiment is with the side structure sketch map of the power voussoir in the chuck;

Fig. 5 is the vertical view of the power voussoir among Fig. 4;

Fig. 6 is the left view of the power voussoir among Fig. 4;

Fig. 7 be lathe among the embodiment with the structural representation of chuck, wherein: 6 is claw, 7 is sealing strip, 8 for being located at the protecgulum on the

shell

2,9 for being used for the fastening bolt of fastening protecgulum 8 and shell 2;

Fig. 8 is the left view among Fig. 7;

Fig. 9 be lathe among the embodiment with the sectional structure chart of chuck, wherein: 10 is first chamber, 11 is second chamber, the rear end central portion of piston 3 is provided with piston rod;

Figure 10 is the sectional structure chart of another kind of lathe with chuck, and wherein: piston 3 has center through hole.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is elaborated:

The lathe of present embodiment comprises with chuck: be located at piston 3 and the sealing protecgulum 8 of being located at shell 2 front ends and the power voussoir 4 that is snug fit at protecgulum 8 outsides in the shell 2.

The center is arranged with three or four or six protruding wedge 3-1 that tilt to periphery on the leading flank of said piston 3; The centre of the outboard end of contiguous said power voussoir 4 is provided with the inclined hole 4-1 that cooperates of slipper seal mutually with said protruding wedge 3-1; The end wall of the outboard end of this power voussoir 4 is provided with the tank filler sleeve 4-4 that communicates with said inclined hole 4-1, is provided with sealed fuel filler neck in this tank filler sleeve 4-4.

For guaranteeing that said piston realizes axial displacement in shell 2, in the excircle that is projected in this piston 3 of said protruding wedge 3-1 on the leading flank of said piston 3.

Said protruding wedge 3-1 is located at the excircle of contiguous said piston 3.

For guaranteeing that driving said power voussoir 4 when said piston 3 axial displacements realizes radial displacements; With the action that realizes clamping or unclamping workpiece; Reduce wearing and tearing simultaneously; At least inside and outside face 3-2, the 3-3 of being slidingly matched that has pair of parallel on the said protruding wedge 3-1, the inside and outside face 3-2 that is slidingly matched, 3-3 are the plane and are suitable for and are that the circle in the center of circle is tangent with the point on the central axis of said piston 3.During practical implementation; The cross section of said protruding wedge 3-1 can be polygon (as: irregular eight distortion or hexagons); Or the inside and outside face 3-2 that is slidingly matched, 3-3 are arc-shaped surface, and this arc-shaped surface is concentric with the circle that with the point on the central axis of said piston is the center of circle.

Also be provided with T type groove 4-3 on the said power voussoir 4, the both sides of power voussoir 4 are provided with boss 4-2.The bottom of the medial extremity of said power voussoir 4 is provided with the dust excluder groove 4-5 that is used to be provided with dust excluder 7.

With pneumatic is example; When the chuck of the utility model uses; When the rearward end of piston 3 and first chamber, 10 air inlets between the shell 2, gas promotes piston 3 and outwards moves, and makes between the inclined hole 4-1 of protruding wedge 3-1 and power voussoir 4 on the piston 3 and produces active force; Power voussoir 4 is moved radially to the center of chuck, thus clamping work pieces; When the leading section of piston 3 and second chamber, 11 air inlets between the protecgulum 8; Gas promotes piston 3 and moves to the inside; Make between the inclined hole 4-1 of protruding wedge 3-1 and power voussoir 4 on the piston 3 and produce active force, power voussoir 4 is moved radially to the chuck periphery, thereby unclamp workpiece fast.

Like Fig. 9, for the piston 3 of Contiuum type, the piston rod of the rear end central portion of piston 3 is provided with respectively two air intake ducts with first chamber 10 and second chamber 11.

As another kind of embodiment, like Figure 10, piston 3 has center through hole, in shell 2, is provided with the T shape bar 12 that cooperates with the medium pore slipper seal of piston 3, and T shape bar 12 bottoms are provided with the inlet channel that communicates with first chamber 10 and second chamber 11 respectively.The central shaft of T shape bar 12 is provided with half through hole 12-1.

Obviously, the foregoing description only be for explain clearly that the utility model does for example, and be not to be qualification to the embodiment of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation that these spirit that belong to the utility model are extended out or change still are among the protection domain of the utility model.

Claims

1. a lathe is used chuck, comprising: piston (3) and power voussoir (4) is characterized in that:

The center is arranged with at least two protruding wedges (3-1) that tilt to periphery on the leading flank of said piston (3); The centre of the outboard end of contiguous said power voussoir (4) is provided with and said protruding wedge (3-1) inclined hole (4-1) that cooperates of slipper seal mutually; The end wall of the outboard end of this power voussoir (4) is provided with the tank filler sleeve (4-4) that communicates with said inclined hole (4-1), is provided with sealed fuel filler neck in this tank filler sleeve (4-4).

2. lathe according to claim 1 is used chuck, it is characterized in that: in the excircle that is projected in this piston (3) of said protruding wedge (3-1) on the leading flank of said piston (3).

3. lathe according to claim 1 and 2 is used chuck, it is characterized in that: said protruding wedge (3-1) is located at the edge of the excircle of contiguous said piston (3).

4. lathe according to claim 1 and 2 is used chuck; It is characterized in that: have the inside and outside face that is slidingly matched (3-2,3-3) of pair of parallel on the said protruding wedge (3-1) at least, the inside and outside face that is slidingly matched (3-2,3-3) is for the plane and be suitable for and be that the circle in the center of circle is tangent with the point on the central axis of said piston (3); Or the inside and outside face that is slidingly matched (3-2,3-3) is an arc-shaped surface, and this arc-shaped surface is concentric with the circle that with the point on the central axis of said piston (3) is the center of circle.

5. lathe according to claim 1 is used chuck, it is characterized in that: the bottom of the medial extremity of said power voussoir (4) is provided with the dust excluder groove (4-5) that is used to be provided with dust excluder (7).