CN202006288U

CN202006288U - Fast clamping chuck

Info

Publication number: CN202006288U
Application number: CN2011200477987U
Authority: CN
Inventors: 洪青强; 邓磊光
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-02-19
Filing date: 2011-02-19
Publication date: 2011-10-12
Anticipated expiration: 2021-02-19

Abstract

The utility model relates to a fast clamping chuck. The front end of a core rod penetrating through an inner hole of a main shaft is provided with a push and pull ring, and sliding seats and a support are installed on a disc chuck. The sliding seats are respectively matched with a sliding block, and clamping pieces are installed on connecting plates fixed with the sliding blocks. The support is connected with an L-shaped drag hook through a pin shaft. When pneumatic or hydraulic or mechanical force is exerted to pull the core rod, the push and pull ring can move inwards to drive the drag hook to rotate round the pin shaft, and the other hook head of the drag hook pulls the connecting plates and drives the clamping pieces to move to the center direction of the disc chuck, so a workpiece is clamped. When force is added to push the core rod, the push and pull ring moves outwards to drive the drag hook to rotate to another direction, so the workpiece is loosened and released.

Description

A kind of quick expansion chuck

Technical field

The utility model relates to the rotary jig that a kind of automatic equipment fastens workpiece clamp.

Background technology

Expansion chuck is usually used in automatic lathe and the special equipment typical products in mass production being processed used anchor clamps fast, and purpose is that the workpiece that will process is clamped fast, and can drive the workpiece revolution.

The most frequently used quick expansion chuck such as Fig. 1, endoporus at taper hole main shaft 01 has one section internal taper hole, the cone of the profile of chuck 02 for matching with taper hole main shaft 01 hole taper, it is corresponding that the endoporus of chuck and workpiece 04 are held the position shape, and the retaining part of chuck 02 is split into 3 lobes or many lobes (as Fig. 2); By pneumatic or hydraulic pressure, perhaps the mechanical force pull bar 03 that will be connected with chuck 02 pulls back, and chuck 02 is moved backward, under the effect of the tapering in hole within the taper hole main shaft 01, chuck 02 is when mobile backward, and several lobes that are broken away all inwardly shrink, and workpiece 04 is clamped.This quick chuck is simple in structure, is using very generally at present; But it mainly is applicable to the processing of smaller workpiece, and because in its clamping process, clamping will be finished clamping by moving axially, and the axial location of its converted products is inaccurate, thickness is difficult for guaranteeing, is not suitable for the processing of large-size workpiece.

The quick expansion chuck of the utility model is mainly used in the clamping of larger-size dish type or annular element, clamps reliable rapidly, simple in structure and adaptability is strong.

Summary of the invention

The utility model structure such as Fig. 3, through the plug 05 of main shaft 06 endoporus, its head is installed a push-and-pull ring 16; Floral disc 07 usefulness bolt or directly be fixed on the main shaft 06 with screw thread; Slide 08 is installed on the plane of floral disc 07, and the bearing 12 identical with its quantity; Each slide 08 has an associated slide block 09, and spindle axis is pointed at the track center that slide block 09 slides; Connecting plate 11 is fixed on the slide block, and intermediate plate 10 is installed in connection, and on 11, connecting plate 11 has emboss pit with the position that intermediate plate 10 is connected, and the emboss pit of this groove and intermediate plate 10 bottoms matches; The center position that is fixed in a headdress flower dish 07 of the connecting plate 11 on the slide block 09 extends to the top position of bearing, and in this position the one square or circular through hole perpendicular to the floral disc plane is arranged.

To between the spindle axis, its center line overlaps with the slide block movement course bearing or is parallel bearing 12 at slide 08.Bearing 12 links to each other with L shaped drag hook 15 by a bearing pin 14, and a gib head of drag hook 14 is positioned at the groove of push-and-pull ring, and another gib head is arranged in the through hole on the connecting plate 14; Bearing 12 has one the screwed hole of adjustment screw is installed near the position of slide direction, and the head of screw of adjustment screw 13 relies on bearing.

The quantity of intermediate plate 10 determines according to the size of workpiece or shape, and intermediate plate quantity is more when being used for workpiece size is big or wall is thin workpiece, and the quantity of slide block slide is identical with intermediate plate, generally is no less than 3, is evenly distributed on the floral disc.

When applying pneumatic or hydraulic pressure or mechanical force when plug 05 is inwardly drawn, promptly driving push-and-pull ring 16 moves in the hole, drive drag hook 15 and rotate around bearing pin 14, another gib head of drag hook 15 promptly spurs connecting plate 11 and drives intermediate plate 10 and moves clamping work pieces (as Fig. 4) to the center position of floral disc 07.When accentuated push plug 05 power, push-and-pull ring 16 outwards moves, and drives drag hook 14 and rotates the released release of workpiece (as Fig. 5) to other direction.If each intermediate plate fails to clamp simultaneously workpiece when clamping, can change the front and back position of bearing 12 and drag hook 14 by regulating the adjustment screw 13 at bearing 12 rear portions, each intermediate plate 10 can be clipped on the workpiece uniformly.

The screw 17 that intermediate plate 10 is installed is unclamped, intermediate plate 10 is moved on to behind the position of emboss pit outside one lattice of connecting plate 11 or number lattice it is fastening, this chuck promptly can be used for the bigger workpiece of clamping size; Otherwise, with intermediate plate 10 move inward lattice or several lattice and fixing after, can the smaller workpiece of clamping size; If workpiece is excessive, the intermediate plate of changing lengthening gets final product (as Fig. 6)

Description of drawings

Fig. 1 is the structure of quick chuck at present commonly used.

Fig. 2 is the retained part subdivision sectional schematic diagram of quick chuck at present commonly used.

Fig. 3 is a structure assembling schematic diagram of the present utility model.

Fig. 4 is the utility model core post-tensioning, the schematic diagram of workpiece clamping action direction.

Fig. 5 is the utility model plug sinciput, unclamps the schematic diagram of workpiece action direction.

Fig. 6 is the schematic diagram of the intermediate plate mode of the utility model clamping large-size workpiece.

Fig. 7 is another mounting means schematic diagram of the utility model adjustment screw.

The serial number name explanation that indicates among the figure:

01, taper hole main shaft 02, chuck 03, pull bar 04, workpiece 05, plug

06, main shaft 07, floral disc 08, slide 09, slide block 10, intermediate plate 11, connecting plate

12, bearing 13, adjustment screw 14 bearing pins 15, drag hook 16, push-and-pull ring 17 screws

The specific embodiment

1, the slide block combination that fitted in by slide 08 and slide block 09 of every cover can select dovetail groove commonly used or T shape, V-shaped groove to cooperate according to the condition in the characteristics of workpiece and anchor clamps space, also can select straight ball-guide or guide pin bushing sliding bar mechanism for use.

2, the form of adjustment screw can be passed slide with screw, regulates (as Fig. 7).

Claims

1. quick expansion chuck, it is characterized in that: the plug front end through the main shaft endoporus is equipped with a push-and-pull ring; Floral disc is fixed on the main shaft, and slide and bearing are installed on the floral disc plane; The slide block supporting with it arranged on slide, on this slide block a plate is installed, intermediate plate is installed on the connecting plate; Link to each other with a L shaped drag hook with bearing pin on the bearing, a gib head of drag hook is arranged in the extend internally through hole at position of connecting plate, and another gib head is arranged in the annular groove on the push-and-pull ring.

2. quick expansion chuck according to claim 1, it is characterized in that: the quantity of slide and bearing is no less than 3 groups, the quantity that is intermediate plate is quite a few in 3, the floral disc center is pointed at the sliding trace center of the slide block of slide, the position of bearing at slide block between the axle center, its center line and slide overlap or are parallel, with the even cloth of angle same on floral disc.

3. quick expansion chuck according to claim 1, it is characterized in that: there is emboss pit at the position that connecting plate links to each other with intermediate plate, the emboss pit of the shape of this groove and intermediate plate bottom matches, and there is a square or manhole perpendicular to the floral disc plane position that connecting plate extends to the bearing top.

4. quick expansion chuck according to claim 1 is characterized in that: bearing has a screwed hole near the slide direction, is rotary with an adjustment screw in the hole.