CN2367424Y

CN2367424Y - Clamping apparatus

Info

Publication number: CN2367424Y
Application number: CN 99209062
Authority: CN
Inventors: 皮子明
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-29
Filing date: 1999-04-29
Publication date: 2000-03-08
Anticipated expiration: 2008-08-21

Abstract

The utility model relates to a clamping apparatus for work pieces or cutting tools. The utility model is provided with a base. A clamping jaw is arranged in a clamping jaw hole on the wall body at the lower part of the base, and the wall body at the lower part of a base sleeve arranged on the base exterior is provided with a sliding block hole corresponding to the clamping jaw, and a sliding block is arranged in the hole. The exterior of the base sleeve is fixedly provided with an outer base sleeve, and the interior of an outer sliding block hole on the outer base sleeve is provided with an outer sliding block. The front bevel and the rear bevel are separately movably connected with the back face of the clamping jaw and the bevel of the outer sliding block in a contacting way, and the wall body of the outer base sleeve is fixedly provided with a rotary ring which is connected with the outer sliding block in a screw connection way. The utility model can quickly clamp and loose the clamping jaw, and the utility model has the advantages of favorable self-locking action, large clamping force and labor saving and time saving when the utility model is used for exchanging work pieces.

Description

A kind of clamping device

The utility model is the division of original applying number 98227671.0, the patent application of application title " clamping device ".

The utility model relates to machine tool component, is the clamping device of a kind of workpiece or cutter.

Clamping device as work or cutter, of a great variety, adopt the worm drive to clamp or unclamp workpiece or cutter but wherein be no lack of to have, drill chuck (see figure 1) for example, it has pedestal (1) and is arranged on the base sleeve (2) of pedestal outside, when base sleeve is rotated, rotate too with the internal thread circle (3) of base sleeve close-fitting, external screw thread on this internal thread circle and three jaws (4) matches, so three jaws just stretch out or indentation, the drill bit staight shank is clamped or loosen, though utilize screw-drive mechanism to make the clamping device structure simpler, clamps and more time-consuming when unclamping, because work in-process, sometimes need often to change cutter or workpiece, just feel very inconvenient, influenced operating efficiency.

The purpose of this utility model is to propose a kind of clamping device that can clamp fast, unclamp.

The technical measures that the utility model is taked are that jaw is arranged in the jaw hole of the bottom of pedestal wall body, both are matched in clearance, be provided with base sleeve in the pedestal outside, base sleeve bottom wall body is provided with the slider bore corresponding with jaw, the slide block of matched in clearance is set in the hole, external stability in base sleeve has the pedestal overcoat, pedestal puts outward and is provided with the outer slide hole corresponding with the base sleeve slider bore, outer slide is set in the hole, before the slide block, back bevel respectively with the jaw back side, the outer slide inclined-plane contacts and is being dynamically connected of can doing to relatively move, fix a turning collar on pedestal overcoat wall body, turning collar is threaded with outer slide.

For making things convenient for base sleeve to reset, between pedestal and base sleeve, be provided with back-moving spring.

Fig. 1 is the structural representation of traditional drill chuck;

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

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Embodiment shown in Figure 2, has pedestal 1, on the wall body of the bottom of pedestal 1, be provided with the jaw hole, in the jaw 4 of matched in clearance is set, be provided with base sleeve 2 in pedestal 1 outside, base sleeve bottom wall body is provided with the slider bore corresponding with its jaw, the slide block 9 of matched in clearance is set in the hole, be provided with and pedestal overcoat 6 in the outside of base sleeve 2, pedestal overcoat 6 is fixedlyed connected with base sleeve 2, pedestal overcoat 6 can be an one with base sleeve 2, pedestal overcoat 6 is provided with the outer slide hole corresponding with base sleeve 2 slider bore, outer slide 8 is set in the outer slide hole, before the slide block 9, back bevel respectively with jaw 4 back sides, the contact of outer slide 8 inclined-planes, and by being arranged on the guide groove at the jaw back side, guide groove on the outer slide inclined-plane is dynamically connected, guide groove also can be arranged on slide block 9 before, on the back bevel, guide groove is generally taked dovetail groove, the inclined angle alpha of slide block is as less than angle of friction, then has good self-locking action between slide block and jaw, outer slide 8 back sides are provided with external screw thread, put 6 turning collar 7 outward and be threaded with being fixed on pedestal, turning collar 7 can only rotate, and can not go up, following motion.

The utility model can be provided with 1, the jaw more than 2 or 3 as required, and basic structure is same as the previously described embodiments.

When the utility model uses, when pedestal overcoat 6 moves down under artificial effect, base sleeve, outer slide, slide block move down together, because jaw 4 is arranged in the jaw hole on the pedestal 1 bottom wall body, its upper and lower motion is restricted, at this moment jaw outwards moves, jaw unclamps, when base sleeve 2 moves up under manually acting on or under back-moving spring 5 effects, jaw is the pre-clamping tool 10 of motion inwardly, rotation turning collar 7, and outer slide 8 moves downward, and drive slide block 9 inwardly moves the jaw clamping tool.

The utility model drives the jaw fast moving owing to cooperating by the inclined-plane, and has good self-locking action, and the inclined-plane is converted into bigger clamping force to the pressure to jaw, so the utility model not only saves time but also be laborsaving.

Claims

1, a kind of clamping device, comprise pedestal (1) and jaw (4), it is characterized in that: jaw (4) is arranged in the wall body jaw hole, bottom of pedestal (1), both are matched in clearance, be provided with base sleeve (2) in the pedestal outside, base sleeve bottom wall body is provided with the slider bore corresponding with jaw, the slide block (9) of matched in clearance is set in the hole, external stability in base sleeve (2) has pedestal overcoat (6), pedestal overcoat (6) is provided with and the corresponding outer slide hole of base sleeve (2) slider bore, outer slide (8) is set in the hole, before the slide block (9), back bevel respectively with jaw (4) back side, outer slide (8) inclined-plane contacts and is being dynamically connected of can doing to relatively move, fix a turning collar (7) on pedestal overcoat (6) wall, turning collar (5) is threaded with outer slide (8).

2, clamping device according to claim 1 is characterized in that: be provided with back-moving spring (5) between pedestal (1) and base sleeve (2).