CN202517085U

CN202517085U - Automatic rebounding device for bench drill

Info

Publication number: CN202517085U
Application number: CN201220194596XU
Authority: CN
Inventors: 赵静
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-03
Filing date: 2012-05-03
Publication date: 2012-11-07
Anticipated expiration: 2022-05-03

Abstract

The utility model discloses an automatic rebounding device for a bench drill, which comprises a pressure head. A drill rod sleeve is arranged on the pressure head; a separable drill stem is arranged below the pressure head; the front end of the drill stem is provided with a drill chuck for clamping a drill bit; a helical spring is sleeved on the drill stem; and the upper end of the helical spring is fixedly connected with the pressure head. The automatic rebounding device for the bench drill, which is disclosed by the utility model, utilizes the helical spring arranged on the drill stem; and after the drill bit completes drilling, the drill stem is automatically rebounded upward, so that the damage to the surface of a workpiece is avoided. Moreover, the surface of the drill stem is provided with a rubber strip embedded in a mute groove, so that when the helical spring is deformed, the noise is low and the wear of the helical spring to the drill stem is also avoided.

Description

Automatic rebounding device of bench drill

Technical Field

The utility model relates to a bench drill, more precisely, is an automatic resilient mounting of bench drill.

Background

Bench drills, also known as bench drills, are small in size and easy to operate, and are usually mounted on a special worktable to use a small hole machining machine tool. The existing bench drill moves up and down on a drill rod through a manual triangular turntable, when a precise workpiece is machined, a drill bit on the drill rod slightly moves downwards, and the slight movement is caused by the meshing distance of gears for guiding the triangular turntable. However, such small movements sometimes result in impacts on the workpiece surface, resulting in scrapping of the workpiece.

Disclosure of Invention

The utility model discloses solve the technical problem that prior art exists to an automatic resilient mounting of bench drill is provided.

The above technical problem of the present invention can be solved by the following technical solutions:

the utility model provides an automatic resilient mounting of bench drill, contains a pressure head, the pressure head on be equipped with a drill rod sleeve, the below of pressure head be equipped with a separable drilling rod, the front end of drilling rod be equipped with one and be used for the drill bit of centre gripping to press from both sides, the drilling rod on cup jointed a coil spring, coil spring's upper end with pressure head fixed connection.

As the embodiment of the utility model discloses a preferred, the lateral wall of drilling rod on be equipped with a silence recess, silence recess in inlay and be equipped with the rubber strip.

As a preferred embodiment of the present invention, the coil spring is a tungsten steel spring.

The utility model discloses an automatic resilient means of bench drill utilizes the coil spring who sets up on the drilling rod, accomplishes the drilling back when the drill bit, and the drilling rod is automatic upwards kick-backs, has avoided the damage to workpiece surface. In addition, because the surface of the drill rod is provided with the rubber strip embedded in the silent groove, when the spiral spring deforms, the noise is low, and the abrasion of the spiral spring to the drill rod is also avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of an automatic rebounding device of a bench drill according to the present invention;

FIG. 2 is an exploded perspective view of the automatic rebounding apparatus of the bench drill of FIG. 1;

FIG. 3 is an enlarged detail view of area A of the automatic rebounding device of the bench drill of FIG. 2;

wherein,

1. an automatic rebound device of the bench drill; 2. a pressure head; 21. a drill rod sleeve; 3. a drill stem; 31. a mute groove; 4. a bit holder; 5. a coil spring.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

As shown in fig. 1 to 3, an automatic rebounding apparatus 1 for a bench drill includes a pressure head 2, a drill rod sleeve 21 is disposed on the pressure head 2, a separable drill rod 3 is disposed below the pressure head 2, a drill rod clamp 4 for clamping a drill bit is disposed at a front end of the drill rod 3, a coil spring 5 is sleeved on the drill rod 3, and an upper end of the coil spring 5 is fixedly connected to the pressure head 2.

A mute groove 31 is arranged on the side wall of the drill rod 3, and a rubber strip is embedded in the mute groove 31.

The coil spring 5 is a tungsten steel spring.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides an automatic resilient mounting (1) of bench drill, contains a pressure head (2), pressure head (2) on be equipped with a drill rod sleeve (21), the below of pressure head (2) be equipped with one separable drilling rod (3), the front end of drilling rod (3) be equipped with one and be used for the drill bit clamp (4) of centre gripping drill bit, its characterized in that, drilling rod (3) on cup jointed a coil spring (5), the upper end of coil spring (5) with pressure head (2) fixed connection.

2. The automatic rebounding device (1) for bench drills according to claim 1, wherein the side wall of the drill rod (3) is provided with a silent groove (31), and a rubber strip is embedded in the silent groove (31).

3. The automatic rebounding apparatus (1) for bench drills according to claim 2, wherein said coil spring (5) is a tungsten steel spring.