CN211680168U

CN211680168U - Novel drill bit

Info

Publication number: CN211680168U
Application number: CN201921074962.6U
Authority: CN
Inventors: 薛万金
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-10-16
Anticipated expiration: 2029-07-10

Abstract

The utility model relates to a novel drill bit, at least one part of a handle part connected with the drill bit and a clamp is arranged into a structural form of a taper handle; the shank of the drill bit is provided in one of the following specific forms of construction: a) the whole handle part is in a taper structure form; b) the straight shank and the taper shank are combined to form the shank part; the drill bit shank is provided with a fixing surface for preventing the drill bit from slipping and rotating; the handle portion is provided with a fixing surface which can be used for preventing the drill bit from slipping and rotating, a fastener is arranged to tightly abut against the fixing surface, and the fixing surface is in surface contact with the end face of the fastener. The utility model discloses the drill bit has still been solved straight shank drill jig and has been difficult to press from both sides tightly, and the drill bit skids easily during drilling, leads to drill bit stalk portion and chuck hole to produce the mar, makes the drill bit beat and strengthens, and drilling quality can not guarantee, and the problem that drill jig also damaged very easily. Because the drill handle of the utility model does not need temperature control, the drill quenching can adopt clean and environment-friendly vacuum quenching, thereby avoiding the serious problem that the salt bath quenching seriously pollutes the environment.

Description

Novel drill bit

Technical Field

The utility model relates to a drill bit belongs to spot facing work cutter technical field.

Background

The production process of the traditional taper shank drill bit needs to pass through: material cutting → turning excircle → turning taper shank → turning little stem → flat end face → hitting central hole → grinding excircle → rolling → cutting → grinding central point (very low efficiency) → straightening (very low efficiency) → milling flat → salt bath quenching → grinding excircle → grindingThe method comprises 18 procedures of center hole → centerless grinding rough grinding excircle → excircle grinding excircle (low efficiency) → excircle grinding taper shank (low efficiency), and the like, and has the disadvantages of extremely complex production process, very low production efficiency, very low product qualification rate, very low product precision and extremely high product manufacturing cost, so that only straight shank drill bits can be produced by the drill bits with the diameter of below 13mm at present. Because the straight shank drill bit is difficult to clamp, the drill bit and the clamp are easy to scratch, the jump of the drill bit is increased,the drill bit is easily damaged and,the drilling quality cannot be guaranteed and the drill bit clamp is also easily damaged. To reduce straight shank drill bitsAndthe damage of the drill clamp improves the drilling precision, and the hardness of the shank of the straight shank drill needs to be controlled below 40 ℃ when the straight shank drill is quenched, so the straight shank drill needs to be quenched by a salt bath which seriously pollutes the environment. Nevertheless, the problems of slipping of the drill, insuring of the drilling quality, and easy damage of the drill and the jig cannot be avoided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects and avoiding environmental pollution, and has the advantages of reasonable structure, effectively improving the drilling quality and the working efficiency,reduce the production costA novel drill bit.

Therefore, the utility model adopts the technical scheme that: a novel drill bit, at least one part of a handle part connected with the drill bit and a clamp is arranged in the structural form of a taper handle.

Further: the shank of the drill bit is provided in one of the following specific forms of construction:

a) the whole handle part is in a taper structure form;

b) the handle part is formed by combining a straight handle and a taper handle.

Further, the drill bit shank is provided with a fixed surface which can be used to prevent the drill bit from slipping and rotating.

Further, the fixing surface of the shank of the drill for preventing the drill from slipping can be of any shape.

Furthermore, the drill handle is provided with a fixing surface which can be used for preventing the drill from slipping and rotating, and the clamp is provided with a clamping surface matched with the fixing surface.

Further, the side face of the handle is provided with a fixing face against which the end face of the fastener can abut, and the fixing face and the end face of the fastener are in surface contact.

Further, the fixing surface is one or a combination of a plurality of forms of a plane surface, a concave surface or a polygonal surface.

Further, the resulting surface contact is preferential: and the fixing surface and the end surface profile are selected to be correspondingly arranged, so that each part of the end surface of the fastener is abutted against the corresponding part of the fixing surface.

Furthermore, the fixing surface is preferably a concave surface, and the end surface of the fastener is arranged to be a convex surface corresponding to the concave surface.

Further, when the structure b) is adopted, the fixing surface is arranged on the straight shank part.

Further, the top end of the handle part is provided with an arc top, a slope top, a conical top, a plane top or a concave-convex top (10) which is convenient for disassembling the drill bit.

Further, the drill bit is a drill bit with the specification of less than 13 mm.

Further, the fastener is a screw.

Further, when the drill bit is in the structure of a), the used clamp is a special clamp. When the drill bit is in the structure b), all drill bit clamps can be used.

The utility model has the advantages that: the utility model discloses set the straight shank drill bit stalk portion below current 13mm to taper shank or straight shank and the compound novel drill bit of taper shank, but this novel drill bit disect insertion tapering anchor clamps drill, avoided the straight shank drill bit to be difficult to press from both sides tightly because of the chuck, skidded when drilling the drill bit and made the drill bit produce the mar, the drill bit is beated and is increaseed, drilling quality can not guarantee, the problem that the drill chuck also damaged very easily.

More importantly, the drill handle of the utility model does not need to control the temperature, the drill quenching can adopt the vacuum quenching of clean and environmental protection, and the major problem that the salt bath quenching seriously pollutes the environment is avoided.

The taper drill bit has few production processes, and only needs to pass through: the process avoids 4 processes such as center point grinding, straightening, excircle grinding and excircle grinding, taper shank grinding and other 6 processes which have low efficiency in the traditional process, and has the advantages of extremely simple production process, high production efficiency, high product qualification rate, high product precision, low product manufacturing cost, firm clamping between a taper shank drill bit and a clamp, difficult slipping of the drill bit, high drilling precision, long service life of the drill bit, ultrahigh cost performance and practical value, capability of completely meeting the requirements of customers on high quality and high cost performance, and wide popularization and application. Because the shank of the taper shank drill bit does not need to be quenched by controlling the hardness, the vacuum quenching which is clean and environment-friendly can be adopted, and the problem that the straight shank drill bit needs to be quenched by salt bath which seriously pollutes the environment for controlling the hardness of the shank is solved.

Drawings

Fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, and fig. 10 are schematic diagrams of different structural forms of the drill according to the present invention.

In the figure, 1 is a novel drill bit taper handle, 2 is a taper handle and straight handle composite handle, 3 is arranged on a fixed surface which can be matched with the inner hole shape of a special drill bit clamp at the handle end and prevent the rotation and the slip, 4 is arranged on a fastening surface which can be used for fastening a screw, and has various shapes at the handle end, 5 is arranged on a concave surface which can be used for fixing the screw, 6 is arranged on a plane which can be used for fixing the screw, 7 is an arc top which is convenient for disassembling the drill bit, 8 is an inclined plane top which is convenient for disassembling the drill bit, 9 is a cone top which is convenient for disassembling the drill bit, and 10 is a concave-convex top which.

Detailed Description

The utility model provides a novel drill bit, the drill bit stalk portion sets up to the compound stalk portion 2 of tapering handle 1, tapering handle and straight handle, can with the fixed surface 3 that prevents the rotation and skid of special drill bit anchor clamps hole shape adaptation, can be used to the fastening face 4 of the various shapes of screw fastening, can be used to the fixed concave surface 5 of screw, can be used to the fixed plane 6 of screw, can be used to dismantle the ARC top 7 of drill bit, can be used to dismantle the inclined plane top 8 of drill bit, can be used to dismantle the circular cone top 9 of drill bit, can be used to dismantle the unsmooth top 10 of drill bit.

The utility model discloses the tapering handle that the drill bit stalk portion set up and the compound stalk portion 1 of straight shank or tapering handle 2 all are applicable in the drill bit of specification and arbitrary length below 13 mm.

The utility model discloses the drill bit stalk portion can set up 1 plane or a plurality of arbitrary shape's plane or concave surface for fixed drill bit, in order to prevent that the drill bit from rotatory skidding.

The utility model discloses the taper shank part of the compound stalk portion 1 of drill bit tapering handle and straight shank or taper shank 2 can set up to arbitrary tapering, does not need control hardness.

The utility model discloses the fastening face 3 and the special chuck hole adaptation that set up have better anti-rotation function of skidding. 4. 5, 6 setting purposes: when the drill bit and the drill clamp cannot be well fastened and matched due to the factors such as the accuracy of the drill bit handle or the accuracy of the clamp, fasteners such as screws can be used for fixing the drill bit on the drill clamp through the

fastening surfaces

4, 5 and 6, so that the practical effect is good, and if the taper fit of the drill bit and the drill clamp is good, the

fastening surfaces

4, 5 and 6 can be omitted.

The utility model discloses the drill bit clamping utilizes the dismantlement pore pair arc top 7 of chuck, inclined plane top 8, circular cone top 9, unsmooth top 10 arbitrary top surface can all independently realize dismantling the purpose of drill bit on the special chuck.

When the drill bit is arranged in the structure form, the corresponding part of the clamp is also arranged in the structure form matched with the handle part of the drill bit, and a side hole for the screw to penetrate through to fasten the drill bit is arranged on the side surface of the clamp.

The utility model discloses the reason that the preferred concave surface structural style of selecting for use of fastening face lies in, this kind of structural style: the contact area between the fastening surface and the end surface of the fastener is increased to a certain extent compared with the plane structure; the two contact surfaces are spherical surfaces, so that the relative movement of the fastener and the drill bit is further restricted, and the drill bit can be clamped in the clamp more reliably and stably.

The utility model discloses the further sand grip that can go out axial direction setting at stalk portion surface machining, the main part still sets up tapered structural style certainly, and anchor clamps correspond the setting, and the existence one of which of sand grip can get into anchor clamps to the drill bit when the clamping like this and lead, and its two can further increase the clamping face, improves the reliability of drill bit centre gripping, and its three prevents to rotate and skids.

The utility model discloses a fastener except the screw, also can be the fastener of other structural style, as long as satisfy the utility model discloses an operation requirement all can be used among the utility model discloses.

The foregoing is directed to embodiments of the present invention, and any and all obvious modifications, similar or obvious to those of the preceding claims, all falling within the scope of the present invention.

Claims

1. The novel drill bit is characterized in that at least one part of a shank part connected with the drill bit and a clamp is arranged in a structure form of a taper shank;

the shank of the drill bit is provided in one of the following specific forms of construction:

a) the whole handle part is in a taper structure form;

b) the straight shank and the taper shank are combined to form the shank part;

the drill bit shank is provided with a fixing surface for preventing the drill bit from slipping and rotating;

the handle is provided with a fixing surface which can be used for preventing the drill bit from slipping and rotating, a fastener is arranged to tightly abut against the fixing surface, and the fixing surface is in surface contact with the end surface of the fastener;

the surface contact formed is preferential: and the fixing surface and the end surface profile are selected to be correspondingly arranged, so that each part of the end surface of the fastener is abutted against the corresponding part of the fixing surface.

2. The novel drill bit of claim 1, wherein the fixing surface is one or a combination of a plurality of forms selected from a flat surface, a concave surface and a polygonal surface.

3. The novel drill bit of claim 2, wherein the retaining surface is preferably a concave surface and the fastener end surface is configured to be a convex surface corresponding to the concave surface.

4. The novel drill bit of claim 1 wherein, in said configuration a), said retaining surface is disposed at a top portion of said tapered shank; when in the structure b), the fixing surface is arranged on the straight shank part.

5. A new drill according to claim 1, characterized in that the top end of the shank is arranged as an arc top, a bevel top, a cone top, a flat top or a concave-convex top (6-10) for easy removal of the drill.

6. The novel drill bit of claim 1, wherein the drill bit is a 13mm gauge drill bit.