CN201455331U

CN201455331U - Chuck

Info

Publication number: CN201455331U
Application number: CN2009201225806U
Authority: CN
Inventors: 杨明江
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-17
Filing date: 2009-06-17
Publication date: 2010-05-12
Anticipated expiration: 2019-06-17

Abstract

The utility model discloses a chuck, which belongs to the field of machine parts. The existing chuck has the disadvantage that complex plate type parts with the external surface in an arc shape can not be easily arranged and clamped thereon. The chuck comprises a base, a triangular seat, an oscillating arm and a plate body. The base is in a bucket shape and is provided with an inner cavity with an opening at one end, the wall of the inner cavity is provided with three grooves, the triangular seat is arranged in the inner cavity of the base, three oscillating arm connecting seats are arranged on the outer side of the triangular seat and are embedded in the corresponding grooves, the plate body is covered on the opening surface of the base, the outer side surface of the base is provided with an oscillating arm support seat, the oscillating arm support seat is provided with a pin hole, a pin shaft is arranged in the pin hole, the tail end of the oscillating arm is movably connected with the oscillating arm connecting seats by a shaft, the middle part of the oscillating arm is provided with an L-shaped guide hole, and the pin shaft penetrates through the L-shaped guide hole. Since the oscillating arm can shrink in the radial direction when moving backwards along the axial direction, the utility model can realize the arrangement and clamping of complex plate type parts with external surfaces in the arc shape.

Description

A kind of chuck

Technical field

The utility model belongs to the machine tool element field, and is especially relevant with a kind of chuck.

Background technology

Traditional three-pawl type, four-jaw type chuck all are to adopt claw to make radial contraction or expand mobile, make the distance of claw and chuck hub line shorten or increase the clamping of finishing workpiece, such chuck is suitable for clamping axial workpiece and the more smooth cylindrical disk-like accessory of outer round surface, the complex disc part that has arcwall face for outer round surface as automotive hub just is not suitable for, claw damages the outer round surface of workpiece easily, and clamping is also unstable.

The utility model content

The purpose of this utility model is exactly to provide a kind of suitable clamping outer surface to have the chuck of the complex disc part of arcwall face, for this reason, the utility model by the following technical solutions:

A kind of chuck, it is characterized in that: described chuck comprises base, Triangulum, swing arm and disk body, base is the inner chamber that tubbiness has an end opening, along the circumferential direction be arranged at intervals with three grooves on the internal chamber wall, the Triangulum lateral surface along the circumferential direction is provided with three swing arm Connection Blocks, Triangulum is arranged at base intracavity and described swing arm Connection Block is flush-mounted in described groove, the disk body lid is loaded on the base openings face, the disk body lateral surface is provided with three and along the circumferential direction distributes and the swing arm supporting seat corresponding with described swing arm Connection Block, the swing arm middle part is provided with L shaped pilot hole, swing arm tail end and described swing arm Connection Block flexibly connect by axle, described swing arm supporting seat is provided with pin-and-hole, bearing pin is installed in the pin-and-hole, and this bearing pin passes described L shaped pilot hole.

As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature:

Described swing arm front end is equipped with the claw head, and claw head and swing arm front end flexibly connect with axle, and claw head portion radially overhangs to base axis, the convenient clamping that outer surface is the workpiece of inner concave arc surface.

Between the bottom surface of described base and the described disk body at least two guide posts are installed, the guide post axis is parallel with the axis of base, described Triangulum is provided with axially directed hole, this axially directed hole is corresponding with described guide post and be set in guide post, and Trianguli slippage is play the guiding role.

On the described disk body isometry block is installed, regulates the clamping position that limits workpiece.

When the utility model uses, the base of chuck is fixedly installed in machine tool chief axis, by connecting rod Triangulum is connected with hydraulic cylinder piston, Triangulum is close to disk body during original position, workpiece one side is resisted against isometry block, hydraulic cylinder piston indentation cylinder body, move axially to base end face by connecting rod pulling Triangulum, swing arm Connection Block on the Triangulum hauls swing arm and moves to base end face, bearing pin on L shaped pilot hole in the swing arm and the disk body swing arm supporting seat leads to the mobile of swing arm, make the swing arm head in moving axially process, do the radial contraction motion to base axis simultaneously, the claw head is also done axially and radial motion thereupon, the claw head gos deep into the outer surface that workpiece is inner concave arc surface, with workpiece spindle to clamping and positioning all radially.

Use the utility model can reach following beneficial effect: by swing arm axially and move radially, realized outer surface is had the clamping of the complex disc part of arcwall face.

Description of drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is a left view of the present utility model.

Fig. 3 is a upward view of the present utility model.

Fig. 4 is a right view of the present utility model.

Fig. 5 is the B-B cutaway view of Fig. 1.

Fig. 6 is the A-A cutaway view of Fig. 2.

Fig. 7 is the front view of swing arm in the utility model.

Fig. 8 is the right view of swing arm in the utility model.

Among the figure, 1, the claw head; 2, isometry block; 3, bearing pin; 4, disk body; 5, Triangulum; 6, base; 7, swing arm; 8, guide post; 9, L shaped pilot hole.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in detail.

As Fig. 1～shown in Figure 8, the utility model comprises base 6, Triangulum 5, swing arm 7 and disk body 4, base 6 is the inner chamber that tubbiness has an end opening, along the circumferential direction be arranged at intervals with three grooves on the internal chamber wall, the lateral surface of Triangulum 5 along the circumferential direction is provided with three swing arm Connection Blocks, inner chamber and described swing arm Connection Block that Triangulum 5 is arranged at base 6 are flush-mounted in described groove, disk body 4 lids are loaded on the opening surface of base 6 and isometry block 2 are installed on disk body 4, three guide posts 8 are installed between the bottom surface of disk body 4 and base 6, the axis of guide post 8 is parallel with the axis of base 6, Triangulum 5 is provided with axially directed hole, this axially directed hole and guide post 8 are corresponding and be set in guide post 8, the lateral surface of disk body 4 is provided with three and along the circumferential direction distributes and the swing arm supporting seat corresponding with described swing arm Connection Block, swing arm 7 middle parts are provided with L shaped pilot hole 9, the tail end of swing arm 7 and described swing arm Connection Block flexibly connect by axle, described swing arm supporting seat is provided with pin-and-hole, bearing pin 3 is installed in the pin-and-hole, bearing pin 3 passes L shaped pilot hole 9, swing arm 7 front ends are equipped with claw head 1, claw head 1 flexibly connects with axle with swing arm 7 front ends, and the head of claw head 1 radially overhangs to the axis of base 6.

When the utility model uses, base 6 is fixedly installed in machine tool chief axis, by connecting rod Triangulum 5 is connected with hydraulic cylinder piston, Triangulum 5 is close to disk body 4 during original position, workpiece one side is resisted against isometry block 2, hydraulic cylinder piston indentation cylinder body, move axially to the bottom surface of base 6 by connecting rod pulling Triangulum 5, swing arm Connection Block on the Triangulum 5 hauls swing arm 7 and moves to the bottom surface of base 6, the mobile guiding of L shaped pilot hole 9 and 3 pairs of swing arms 7 of bearing pin, make the head of swing arm 7 in moving axially process, do the radial contraction motion to the axis of base 6 simultaneously, claw head 1 is also done axially and radial motion thereupon, claw head 1 gos deep into the outer surface that workpiece is inner concave arc surface, with workpiece spindle to clamping and positioning all radially.

Claims

1. chuck, it is characterized in that: described chuck comprises base (6), Triangulum (5), swing arm (7) and disk body (4), base (6) is the inner chamber that tubbiness has an end opening, along the circumferential direction be arranged at intervals with three grooves on the internal chamber wall, Triangulum (5) lateral surface along the circumferential direction is provided with three swing arm Connection Blocks, Triangulum (5) is arranged at base intracavity and described swing arm Connection Block is flush-mounted in described groove, disk body (4) lid is loaded on the base openings face, disk body (4) lateral surface is provided with three and along the circumferential direction distributes and the swing arm supporting seat corresponding with described swing arm Connection Block, swing arm (7) middle part is provided with L shaped pilot hole (9), swing arm (7) tail end and described swing arm Connection Block flexibly connect by axle, described swing arm supporting seat is provided with pin-and-hole, bearing pin (3) is installed in the pin-and-hole, and this bearing pin (3) passes described L shaped pilot hole (9).

2. a kind of chuck according to claim 1 is characterized in that: described swing arm (7) front end is equipped with claw head (1), and claw head (1) flexibly connects with axle with swing arm (7) front end, and claw head (1) head radially overhangs to base (6) axis.

3. a kind of chuck according to claim 1, it is characterized in that: between the bottom surface of described base (6) and the described disk body (4) at least two guide posts (8) are installed, the axis of guide post (8) is parallel with the axis of base (4), described Triangulum (5) is provided with axially directed hole, and this axially directed hole is corresponding with described guide post (8) and be set in guide post (8).

4. a kind of chuck according to claim 1 is characterized in that: isometry block (2) is installed on the described disk body (4).