CN209918924U

CN209918924U - Quick clamping drill chuck

Info

Publication number: CN209918924U
Application number: CN201920645894.8U
Authority: CN
Inventors: 于成银; 魏宁波
Original assignee: Shandong Weida Machinery Co Ltd
Current assignee: Shandong Weida Machinery Co Ltd
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2020-01-10
Anticipated expiration: 2029-05-07

Abstract

The utility model provides a press from both sides tight drill chuck fast, it has solved the lower technical problem of current drill chuck work efficiency, it is including boring the body, the clamping jaw, the overcoat, the steel ball, jump ring and hou gai, the clamping jaw sets up respectively in boring the body inslot along circumference evenly distributed on boring the body, it is fixed with the hou gai to bore body rear end through the jump ring, it is equipped with bores body screw thread to bore body front end excircle, the overcoat is through boring body screw thread and boring body threaded connection, the overcoat inner wall is equipped with the overcoat inclined plane, evenly set up a plurality of inclined plane recesses on the overcoat inclined plane, the inclined plane recess cooperatees with the steel ball, the another side and the clamping jaw of steel ball cooperate, the utility model.

Description

Quick clamping drill chuck

Technical Field

The utility model belongs to the technical field of the drilling tool technique and specifically relates to a quick clamping drill chuck is related to.

Background

The existing drill chuck generally comprises a drill body, a clamping jaw, an outer sleeve and an outer sleeve, wherein the clamping jaw is respectively arranged in three equally-divided inclined holes of a main body, the outer sleeve is arranged in an outer sleeve groove of the main body, and the outer sleeve and the threads of the clamping jaw form thread transmission and can do spiral motion, so that the working states of clamping and loosening are realized; however, when the drill chuck works, in order to ensure the clamping performance, the thread pitches of the clamping jaw and the outer sleeve are relatively small, so that the number of running turns is generally about 20 turns when the drill chuck runs from the maximum clamping range to the minimum clamping range or a slightly larger clamping range, and the working efficiency is seriously influenced.

Disclosure of Invention

The utility model provides a quick clamping drill chuck with lower working efficiency, which aims at the technical problem of lower working efficiency of the existing drill chuck.

Therefore, the utility model discloses a bore the body, clamping jaw, overcoat, steel ball, jump ring and hou gai, the clamping jaw sets up respectively in boring the body inslot along circumference evenly distributed on boring the body, bores body rear end and passes through jump ring and hou gai fixed, bores body front end excircle and is equipped with and bores body screw thread, the overcoat through boring body screw thread and boring body threaded connection, the overcoat inner wall is equipped with the overcoat inclined plane, evenly sets up a plurality of inclined plane recesses on the overcoat inclined plane, the inclined plane recess cooperatees with the steel ball, the another side and the clamping jaw of steel ball cooperate.

Preferably, the number of the clamping jaws is 3, and the number of the outer sleeve inclined planes is the same as that of the clamping jaws.

Preferably, the inclined groove is axially arranged along the outer sleeve.

Preferably, the clamping jaw is provided with a positioning ball groove, and the steel ball is matched with the positioning ball groove.

Preferably, the clamping jaw is sleeved with a spring, one end of the clamping jaw is provided with a clamping jaw end face, and the clamping jaw end face is matched with the spring.

Preferably, the front end of the drill body is provided with a bearing, the axial direction of the clamping jaw is provided with a clamping jaw plane, and the clamping jaw plane is matched with the bearing.

Preferably, the outer sleeve is internally provided with threads matched with the threads of the drill body, and the outer sleeve is in threaded connection with the threads of the drill body through the threads.

The utility model has simple structure, the excircle at the front end of the drill body is provided with a thread, the outer sleeve and the thread can be connected together through the thread, the clamping jaw is fixed in the groove of the drill body through the outer sleeve, the steel ball and the spring, the outer sleeve can move back and forth through the thread of the drill body, thereby pushing the clamping jaw to loosen and clamp; the clamping jaw top is equipped with the location ball groove to the location steel ball, the steel ball rolls friction when this region presss from both sides tightly, and the frictional force of overcoat inclined plane and clamping jaw when reducible drive, bearing contact clamping jaw plane position throughout in the clamping jaw motion process plays the effect that reduces friction, is equipped with the inclined plane recess on the overcoat inclined plane, can produce frictional resistance when the steel ball rolls on the inclined plane recess, and the multiplicable moment of loosening to guarantee that the clamping state is more reliable, practical convenient.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the structure of the present invention;

FIG. 3 is a cross-sectional view of the drill body;

FIG. 4 is a schematic view of a drill body;

FIG. 5 is a cross-sectional view of the jaw;

FIG. 6 is a top view of the jaw;

FIG. 7 is a schematic view of a jaw configuration;

FIG. 8 is a top view of the outer cover;

FIG. 9 is a schematic view of the structure of the jacket;

FIG. 10 is a cross-sectional view of the outer cover;

FIG. 11 is an elevational cross-sectional view in a clamped state;

FIG. 12 is a top sectional view of the clamped state;

FIG. 13 is an elevational, cross-sectional view in the unclamped state;

fig. 14 is a top sectional view in a released state.

The symbols in the drawings illustrate that:

1. a drill body; 2. a clamping jaw; 3. a steel ball; 4. a spring; 5. a bearing; 6. a rear cover; 7. a clamp spring; 8. a jacket; 1-1, drilling body grooves; 1-2, drilling body threads; 2-1, positioning a ball groove; 2-2, clamping jaw end face; 2-3, clamping jaw plane; 8-1, outer sleeve inclined plane; 8-2, a bevel groove; 8-3, thread; 8-4. a jump ring groove.

Detailed Description

The following describes in detail embodiments of the present invention with reference to the drawings.

As shown in fig. 1 and 2, the utility model discloses a bore 1, clamping jaw 2, overcoat 8, steel ball 3, jump ring 7 and hou gai 6 of the body, the number of clamping jaw 2 is 3, as shown in fig. 3 and 4, clamping jaw 2 sets up respectively in boring 3 of the body groove 1-1 of boring along circumference evenly distributed on the body 1, bores 1 rear end of the body and passes through jump ring 7 and back lid 6 fixedly, realizes boring 1 axial fixed of the body.

The outer circle of the front end of the drill body 1 is provided with drill body threads 1-2, threads 8-3 matched with the drill body threads 1-2 are arranged inside the outer sleeve 8, the outer sleeve 8 is in threaded connection with the drill body threads 1-2 through the threads 8-3, and the outer sleeve 8 can rotate through threaded connection and drive the clamping jaw 2 so as to quickly realize clamping and loosening operations and achieve the purpose of improving the unlocking torque.

As shown in fig. 5, 6 and 7, the clamping jaw 2 is provided with a positioning ball groove 2-1, and the steel ball 3 is matched with the positioning ball groove 2-1; as shown in fig. 8, 9 and 10, the inner wall of the rear end of the outer sleeve 8 is provided with a clamp spring groove 8-4, the clamp spring 7 is connected with the outer sleeve 8 through the clamp spring groove 8-4, the inner wall of the outer sleeve 8 is provided with an outer sleeve inclined plane 8-1, a plurality of inclined plane grooves 8-2 are uniformly arranged on the outer sleeve inclined plane 8-1, the inclined plane grooves 8-2 are arranged along the axial direction of the outer sleeve 8, the inclined plane grooves 8-2 are matched with the steel ball 3, the other surface of the steel ball 3 is matched with the clamping jaw 2, when the outer sleeve 8 rotates relative to the subject 1, the outer sleeve inclined plane 8-1 can play a role in pressing or releasing the steel ball 3, and the inclined plane grooves 8-2 can play a role in.

The clamping jaw 2 is sleeved with a spring 4, one end of the clamping jaw 2 is provided with a clamping jaw end face 2-2, the clamping jaw end face 2-2 is matched with the spring 4, and the spring 7 acts on the clamping jaw end face 2-2 to play a role in facilitating resilience of the clamping jaw 2.

The front end of the drill body 1 is provided with a bearing 5, the clamping jaw plane 2-3 is axially arranged on the clamping jaw 2, and the clamping jaw plane 2-3 is matched with the bearing 5, so that the friction force of the outer sleeve 8 in the rotating process can be effectively reduced.

As shown in figures 11 and 12, when the outer sleeve 8 rotates clockwise relative to the drill body 1, the inclined surface 8-1 of the outer sleeve presses the steel ball 3, so that the steel ball 3 presses the clamping jaws 2 to move towards the center of the circle of the drill body 1, the steel ball 3 slides anticlockwise along the inclined surface 8-1 of the outer sleeve, and the minimum clamping range can be reached after the 3 clamping jaws 2 are contacted with each other.

As shown in fig. 13 and 14, when the outer sleeve 8 rotates counterclockwise relative to the drill body 1, the inclined surface 8-1 of the outer sleeve no longer presses the steel ball 3, so that the clamping jaws 2 move in the direction away from the center of the circle of the drill body 1, the steel ball 3 slides clockwise along the inclined surface 8-1 of the outer sleeve, and the maximum clamping range can be reached after the 3 clamping jaws 2 are retracted to a certain extent; the spring 7 plays a role of reverse support in the clamping process, the clamping jaw plane 2-3 is pressed on the balls of at least 2 bearings 5 to roll stably, the friction force is effectively reduced, the inclined groove 8-3 can increase the anti-loosening effect of the steel ball 3, and the steel ball is prevented from loosening in the vibration process; the purpose of clamping or loosening can be realized by rotating the outer sleeve 8 by less than 120 degrees, and the working efficiency is effectively improved.

However, the above description is only an embodiment of the present invention, and the scope of the present invention should not be limited thereto, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.

Claims

1. The utility model provides a quick clamping drill chuck, its is including boring body, clamping jaw, overcoat, steel ball, jump ring and hou gai, the clamping jaw set up respectively in bore the body inslot that bores along circumference evenly distributed on the body, bore the body rear end pass through the jump ring with the back lid is fixed, bore body front end excircle and be equipped with and bore body screw thread, the overcoat through bore body screw thread with bore body threaded connection, a serial communication port, the overcoat inner wall is equipped with the overcoat inclined plane, evenly set up a plurality of inclined plane recesses on the overcoat inclined plane, the inclined plane recess with the steel ball cooperatees, the another side of steel ball with the clamping jaw cooperatees.

2. The quick-clamping drill chuck according to claim 1, wherein the number of said clamping jaws is 3, and the number of said outer casing bevels is the same as the number of said clamping jaws.

3. The quick-grip drill chuck as claimed in claim 1, wherein said beveled recess is axially disposed along said outer sleeve.

4. The quick-clamping drill chuck as claimed in claim 1, wherein said clamping jaws are provided with positioning ball grooves, and said steel balls are engaged with said positioning ball grooves.

5. The quick-clamping drill chuck according to claim 1, wherein the clamping jaw is sleeved with a spring, one end of the clamping jaw is provided with a clamping jaw end face, and the clamping jaw end face is matched with the spring.

6. The quick-clamping drill chuck according to claim 1, wherein the front end of the drill body is provided with a bearing, the axial direction of the clamping jaw is provided with a clamping jaw plane, and the clamping jaw plane is matched with the bearing.

7. The quick-grip drill chuck as claimed in claim 1, wherein said outer sleeve has threads matching the threads of the drill body, said outer sleeve being threadedly engaged with the threads of the drill body.