CN213671892U - Prevent inclined to one side hole digger - Google Patents

Abstract

The utility model discloses a prevent inclined to one side hole opener has the handle of a knife handle one end is equipped with the clamping part that is used for the centre gripping drill bit, the drill bit centre gripping is in this clamping part the clamping part deviates from handle of a knife one end and is equipped with the sword lid body coaxial with the drill bit be equipped with the opening with the cutting end homonymy of drill bit on the sword lid body, be equipped with the blade along the circumferencial direction interval on the open-ended circumference tip, the cutting end of drill bit leaks the certain distance outside the opening outward be equipped with the stabilising arrangement that supplementary drill bit and sword lid body march along the axial in the sword lid body inner chamber. The anti-deflection hole digger is internally provided with a stabilizing device for supporting the drill bit and the cutter cover body, and solves the problem that the drill bit, the cutter cover body and the surface of a workpiece deflect. This stabilising arrangement can advance along the axial to drill bit and sword lid body and play the effect of stabilizing the support for drill bit location and sword lid body punch and have higher stability and precision, improve the final quality of punching.

Description

Prevent inclined to one side hole digger

Technical Field

The utility model relates to a hole digger technical field especially relates to a prevent inclined to one side hole digger.

Background

The hole digger is a saw cutting type special circular saw, and has the advantages of simple and flexible operation, convenient and safe carrying and wide application. The hole digger can conveniently cut any curved surface such as plane, spherical surface and the like of various plates such as copper, iron, stainless steel, organic glass and the like in any of round holes, square holes, triangular holes, straight lines and curves. And when the drive arrangement of hole digger was the flashlight and bored, because the handheld electric hand drill of operating personnel takes place to rock easily for the hole digger takes place the incline, and the position incline in the hole of work piece surface division influences the later stage of trompil and uses, and the hole digger is at the in-process of incline simultaneously, also very easily causes the problem of fish tail to the work piece surface, influences whole processingquality.

Disclosure of Invention

To the problem that exists, the utility model aims at providing a prevent inclined hole digger has handle of a knife, clamping part, sword lid body and drill bit, is provided with the stabilising arrangement who supports drill bit and sword lid body at the internal wall of sword lid, solves drill bit and sword lid body and workpiece surface and takes place the problem of incline. This stabilising arrangement can advance along the axial to drill bit and sword lid body and play the effect of stabilizing the support for drill bit location and sword lid body punch and have higher stability and precision, improve the final quality of punching.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a prevent inclined hole digger, has the handle of a knife handle one end is equipped with the clamping part that is used for the centre gripping drill bit, the drill bit centre gripping is in this clamping part the clamping part deviates from handle of a knife one end and is equipped with the sword lid coaxial with the drill bit be equipped with the opening with the cutting end homonymy of drill bit on the sword lid, be equipped with the blade along the circumferencial direction interval on the open-ended circumference tip, the cutting end of drill bit leaks certain distance outside the opening outward be equipped with the stabilising arrangement that supplementary drill bit and sword lid march along the axial in the sword lid inner chamber.

Preferably, the stabilizing device is a straight sleeve sleeved on the inner cavity of the cutter cover body, a moving gap which rotates and advances along the axial direction is reserved between the outer wall of the straight sleeve and the inner wall of the cutter cover body, an elastic component is arranged between one end of the straight sleeve and the side wall connected with the cutter cover body and the clamping part, the cutting tip part of the drill bit is connected with the outer end face, far away from the elastic component, of the straight sleeve, and the outer end face is a plane or an arc-shaped face which is attached to the surface of a workpiece to be processed.

Preferably, the elastic component is a spring, and the spring is sequentially provided with annular grooves for clamping the spring on contact surfaces of the inner wall of the tool cover body and the end part of the straight sleeve.

The utility model has the advantages that: the utility model provides a hole digger of preventing skew is provided with the stabilising arrangement who supports drill bit and the blade cover body in the hole digger, solves drill bit and the blade cover body and the problem that workpiece surface takes place the skew. This stabilising arrangement can advance along the axial to drill bit and sword lid body and play the effect of stabilizing the support for drill bit location and sword lid body punch and have higher stability and precision, improve the final quality of punching.

Drawings

Fig. 1 is an overall structure diagram of the hole digger of the present invention.

Fig. 2 is a cross-sectional view of the present invention shown in fig. 1.

Fig. 3 is a matching diagram of the straight sleeve with the arc-shaped surface and the drill bit of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the technical solution of the present invention with reference to the accompanying drawings and embodiments.

Referring to the attached drawings 1-3, the deviation-preventing hole opener is provided with a cutter handle 1, a clamping portion 3 used for clamping a drill bit 2 is arranged at one end of the cutter handle 1, the drill bit 2 is clamped in the clamping portion 3, the drill bit 2 can be clamped and replaced according to bolts on the clamping portion 3, and the deviation-preventing hole opener is convenient to meet requirements of different hole opening sizes. The clamping part 3 is equipped with the sword lid body 4 coaxial with drill bit 2 deviating from handle of a knife 1 one end be equipped with opening 101 with the cutting end homonymy of drill bit 2 on the sword lid body 4, be equipped with blade 5 along the circumferencial direction interval on the circumference tip of opening 101, the cutting end of drill bit 2 leaks certain distance outside opening 101 outward. The hole digger is mainly designed for punching holes with larger aperture, and the operation principle is as follows: the drill bit 2 is positioned at the center of a perforation to be formed, and after the drill bit 2 advances to a certain depth, the blade 5 on the cutter cover body 4 contacts the surface of a workpiece to be processed to form the perforation. Because the diameter size of the knife cover body 4 matched with the perforation is large, when the drilling is directly carried out, the knife cover body 4 is easy to slide on the surface of a workpiece under the rotation, deviates from the perforation position, influences the perforation precision, and can scratch the surface of the workpiece. The drill bit 2 is used for positioning the hole on the surface of the workpiece, and provides a supporting point for the subsequent hole opening operation of the tool bit cover body 4, so that the sliding and scratching of the tool bit cover body on the surface of the workpiece are solved. However, when the drill bit 2 punches and positions the surface of the workpiece, if the driving device of the handheld drill is adopted, the handheld drill is easy to shake by an operator, so that the drill bit 2 and the cutter cover body 4 are both inclined with the surface of the workpiece, and further the blade 5 on the cutter cover body 4 is inclined in subsequent drilling, so that final hole forming is inclined, and the later stage cannot be used. Therefore, in order to solve this problem, a stabilizing device for assisting the drill bit 2 and the cutter cover body 4 to advance in the axial direction is provided in the inner cavity of the cutter cover body 4. During the use, this stabilising arrangement laminating is on the work piece surface, and the effect of stable stay is marchd to drill bit 2 and sword lid body 4 along the axial for drill bit 2 location and sword lid body 4 punch and have higher stability and precision, improve final punching quality.

Specifically, the stabilizing device is a straight sleeve 6 sleeved in the inner cavity of the knife cover body 4, and a moving gap which can rotate and axially advance is reserved between the outer wall of the straight sleeve 6 and the inner wall of the knife cover body 4. Since the bit 2 positioning and the cutter cover body 4 have the action of rotating and traveling along the axis during the drilling, the above-mentioned rotational clearance and moving clearance are matched with the action. An elastic component is arranged between the side walls of one end of the straight sleeve 6, which are connected with the knife cover body 4 and the clamping part 3, the cutting tip part of the drill bit 2 is connected with the outer end face of the straight sleeve 6, which is far away from the elastic component, and the outer end face is a plane a or an arc-shaped face b which is attached to the surface of a workpiece to be processed. The actual action mode of the stabilizing device is as follows: the straight sleeve 6 and one side of the cutting tip of the drill bit 2 are firstly attached to the surface of a workpiece, then external force is applied to enable the cutting tip of the drill bit 2 to be abutted against a positioning point of the center of a perforation circle, the drill bit 2 continues to move towards the direction of the workpiece, a central positioning hole is drilled on the surface of the workpiece, and the drill bit 2 continues to move, so that the blade 5 is in contact with the surface of the workpiece to perform hole opening operation. During the travel of the drill bit 2 and the straight sleeve 6, the straight sleeve 6 presses the elastic member 6 in the opposite direction, moving toward the holder 3. Because the straight sleeve 6 is tightly attached to the surface of a workpiece and is compressed by the elastic component, in the advancing process of the drill bit 2 and the cutter cover body 4, the straight sleeve 6 plays a role in positioning and supporting the cutter cover body 4 and the drill bit, so that the positioning of the drill bit 2 and the punching of the cutter cover body 4 have higher stability and precision, and the final punching quality is improved.

Preferably, the elastic member is a spring 7. In order to prevent the straight sleeve 6 from deflecting due to the deflection of the spring 7, the spring 7 is sequentially provided with annular grooves 102 for clamping the spring 7 on the contact surfaces of the inner wall of the knife cover body 4 and the end part of the straight sleeve 6, so that the spring 7 is effectively positioned, and the problem that the inner wall of the knife cover body 4 is clamped and stuck due to the deflection of the straight sleeve 6 is avoided.

The principle of the utility model is that: the utility model provides a hole digger of preventing skew is provided with the stabilising arrangement who supports drill bit 2 and sword lid 4 in the hole digger, solves drill bit 2 and sword lid 4 and the problem that workpiece surface takes place the skew. This stabilising arrangement can advance along the axial to drill bit 2 and the sword lid body 4 and play the effect of stable support for drill bit 2 location and sword lid body 4 punch and have higher stability and precision, improve the final quality of punching.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (3)

1. The utility model provides a prevent inclined hole digger, has handle of a knife (1) one end is equipped with clamping part (3) that are used for centre gripping drill bit (2), drill bit (2) centre gripping is in this clamping part (3) deviate from handle of a knife (1) one end and are equipped with sword lid body (4) coaxial with drill bit (2) sword lid body (4) go up and are equipped with opening (101) with the cutting end homonymy of drill bit (2), be equipped with blade (5) along the circumferencial direction interval on the circumference tip of opening (101), the cutting end of drill bit (2) leaks certain distance outside opening (101) outward, wherein be equipped with the stabilising arrangement that supplementary drill bit (2) and sword lid body (4) were marchd along the axial in sword lid body (4) inner chamber.

2. A deviation-preventing perforating tool as claimed in claim 1, characterized in that: the stabilizing device is a straight sleeve (6) sleeved on the inner cavity of the tool cover body (4), a moving gap which rotates and advances along the axial direction is reserved between the outer wall of the straight sleeve (6) and the inner wall of the tool cover body (4), an elastic component is arranged between the side wall where one end of the straight sleeve (6) is connected with the tool cover body (4) and the clamping part (3), the cutting tip part of the drill bit (2) is connected with the outer end face, far away from the elastic component, of the straight sleeve (6), and the outer end face is set to be a plane (a) or an arc-shaped face (b) for fitting the surface of a workpiece to be processed.

3. A deviation-preventing perforating tool as claimed in claim 2, characterized in that: the elastic component is a spring (7), and the spring (7) is sequentially contacted with the inner wall of the cutter cover body (4) and the end part of the straight sleeve (6) to form an annular groove (102) for clamping the spring (7).

Images