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Composite bearing for self-tightening drill chuck

A composite bearing and drill chuck technology, applied in the mechanical field, can solve the problems of the drill chuck falling apart and relying on threaded connection, etc., and achieve the effect of simple and compact structure, stable support and good integrity

Active Publication Date: 2013-07-24
AMICUS VERITATIS MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Obviously, there are obvious defects in the integrity of the existing drill chuck. All parts depend on the threaded connection between the end shield and the ball cap. Without the end shield, the drill chuck will fall apart into individual pieces.

Method used

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  • Composite bearing for self-tightening drill chuck
  • Composite bearing for self-tightening drill chuck

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Such as figure 1 with 2 As shown, the self-tightening drill chuck includes a main body 1, a locking screw 2, a jaw 3, an end cover 7, a shaft seat 10, a ball 11, an elastic sleeve 23, an integrated bearing seat 24 and other components. More specifically, the self-tightening drill chuck includes a cylindrical main body 1, the main body 1 is arranged in a cylindrical one-piece guide seat 24, and the upper part of the one-piece guide seat 24 is a cylindrical whole Type bearing part 4, the lower part is the jaw guide rail part 5 that is conical cylinder. That is, the integral guide seat 24 is divided into two functions: the integral guide portion 4 and the jaw guide rail portion 5 , and the integral guide portion 4 and the jaw guide rail portion 5 are of an integral structure. The composite bearing used for the self-tightening drill chuck is an integral part of the self-tightening drill chuck, including a cylindrical shaft seat 10, which is fixed between the radial direct...

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Abstract

The invention belongs to the technical field of machinery, relates to a self-tightening drill chuck, and particularly relates to a composite bearing for the self-tightening drill chuck. The technical problems of being unreasonable and the like in the prior art are solved. The composite bearing comprises a cylindrical axle base, and the axle base is fixedly arranged between the radial direction of a main body and an integral type bearing guide part. A radial sliding bearing is arranged on the radial inner side of the composite bearing, and a thrust rolling bearing is arranged at the lower end of the composite bearing. Compared with the prior art, the composite bearing for the self-tightening drill chuck has the advantages of being reasonable in design and simple and compact in structure, the axle base is not only a bearing bush of the radial sliding bearing but also a race of the thrust rolling bearing, the composite bearing which is good in integrality and strong in rigidity is formed through positioning and connection by matching of the axle base and the integral type bearing guide part, stable bearing to the main body can be achieved, connecting strength is high, looseness can not happen, and connecting of parts is stable and reliable.

Description

technical field [0001] The invention belongs to the technical field of machinery and relates to a self-tightening drill chuck, in particular to a composite bearing used for a self-tightening drill chuck. Background technique [0002] With the development of social productivity, drill chucks are widely used. Drill chucks are required for bench drills, hand drills or machine tools used in industries such as machinery manufacturing, electronic appliances, construction installation, and home decoration. Holds tools such as drills or cutters for work. There are usually two types of existing drill chucks: one is the wrench type drill chuck, the clamping force of this drill chuck depends on the torque applied by the wrench, and auxiliary tools are needed when clamping and loosening the drill bit, The use of auxiliary tools to tighten or loosen the drill chuck to install or remove the drill bit or tool is cumbersome, time-consuming and labor-intensive; the other is the self-tighten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/12F16C21/00
CPCF16C21/00B23B31/1253B23B2231/38B23B2260/008F16C2322/39
Inventor 游友民游奕华
Owner AMICUS VERITATIS MACHINERY
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