CN215145002U - Anti-deviation centering drill bit - Google Patents

Anti-deviation centering drill bit Download PDF

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Publication number
CN215145002U
CN215145002U CN202120300201.9U CN202120300201U CN215145002U CN 215145002 U CN215145002 U CN 215145002U CN 202120300201 U CN202120300201 U CN 202120300201U CN 215145002 U CN215145002 U CN 215145002U
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China
Prior art keywords
drill bit
drill
drilling
sleeve
centering
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CN202120300201.9U
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Chinese (zh)
Inventor
朱燕华
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Wuxi Ralf Tools Co ltd
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Wuxi Ralf Tools Co ltd
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Priority to CN202120300201.9U priority Critical patent/CN215145002U/en
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Abstract

The utility model relates to the technical field of drill bit centering, and provides an anti-deviation centering drill bit, which comprises a drill bit and a drill handle; the utility model overcomes the defects of the prior art, has reasonable design, and solves the problems of low qualification rate of the existing manual hand-held drilling and poor drilling effect when processing inclined planes, arc surfaces or crossed holes; the utility model makes up the deficiency of manual operation through the sleeve and the positioning foot, and the qualified rate of drilling is high; the positioning foot can be pre-positioned and limited before the drill bit works, the drill bit is stable in centering, and the drilling effect is good; by using the sleeve, the use safety of the drill bit is improved; by arranging the cooling holes, the cutting knife is cooled timely, and the working efficiency of the cutting knife is improved; through the orifice chamfering, the drilling hole surface can be polished, and burrs are prevented from being generated on the drilling hole surface; through set up the drill bit and hold the chamber in the drill handle inside, put into the drill bit and hold the chamber when the drill bit does not use, compact structure, pleasing to the eye practicality.

Description

Anti-deviation centering drill bit
Technical Field
The utility model relates to a drill bit centering technical field, concretely relates to prevent excursion centering drill bit.
Background
The centering drill is used for pre-drilling the center position of a hole before drilling, so that the accuracy of drilling by using a common drill bit is ensured, and the drill bit is prevented from shifting during drilling.
However, the centering drill needs to be held by a worker to drill in the using process, the direction of the drill is easy to deviate when the worker holds the drill, and force is applied along the deviating direction when a subsequent drill bit is machined, so that the phenomena that the drill cannot be used and the drilling yield is low occur;
when an inclined plane, an arc surface or a crossed hole is machined, the drill bit can generate radial force, the drill bit is unstable in centering, and the drilling effect is poor.
To this end, we propose an anti-drift centering drill.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides an anti-deviation centering drill bit, which overcomes the defects of the prior art, has reasonable design, and solves the problems that the existing manual hand-held drilling direction is easy to deviate, the subsequent drill bit can exert force along the deviating direction during processing, the drilling cannot be used, the drilling qualification rate is low, and when an inclined plane, an arc surface or a cross hole is processed, the drill bit can generate radial force, the centering of the drill bit is unstable, and the drilling effect is poor; the utility model increases the stability of the drill bit operation by arranging the sleeve and the positioning foot, the drilling direction is not easy to deviate, the defects of manual operation are made up, and the drilling qualification rate is high; when an inclined plane, an arc surface or a crossed hole is machined, the drill bit can be pre-positioned and limited by the positioning feet before the drill bit works, the drill bit is stable in centering, and the drilling effect is good; by using the sleeve, the injury of the drill bit which rotates at a high speed by manual contact is avoided, and the use safety of the drill bit is improved; by arranging the cooling holes extending to the cutting edges of the cutting knives, the cooling liquid can be directly delivered to the cutting edges of the cutting knives, the service life of the cutting knives is prolonged, and the working efficiency of the cutting knives is improved; by arranging the orifice chamfer, the orifice can be polished after the cutting knife drills, so that burrs are prevented from being generated on the drilled orifice; through set up the drill bit and hold the chamber in the drill handle inside, put into the drill bit and hold the chamber when the drill bit does not use, compact structure, pleasing to the eye practicality.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
an anti-deviation centering drill comprises a drill bit and a drill handle, wherein the drill bit comprises a fixed end and a drilling end, and a drill bit accommodating cavity is formed in the drill handle;
the drill bit comprises a drill bit accommodating cavity, a drill bit and a drill handle, wherein the drill bit accommodating cavity is arranged in the drill bit accommodating cavity and is provided with a fixed end and a drill bit accommodating cavity;
the drill bit further comprises a sleeve, wherein the sleeve is connected to the drill handle; the side end of the sleeve is connected with a positioning foot, and the horizontal height of the bottom of the positioning foot is lower than that of the bottom of the sleeve.
Preferably, the drilling end comprises a drill tip and cutting blades positioned on two sides of the drill tip, and a chip groove; the chip grooves are cut on the side end of the drilling end and extend to the cutting knife in a spiral shape.
Preferably, the drill bit is internally provided with a cooling hole, and the cooling hole extends to the cutting edge of the cutting knife.
Preferably, the drilling end is further provided with an orifice chamfer, and the orifice chamfer is positioned above the cutting knife, is complementary with the chip groove in shape and is arranged in a staggered mode.
Preferably, the positioning foot is arranged to be of an inwards concave arc structure.
Preferably, the positioning legs are provided in a plurality, and the plurality of positioning legs are respectively arranged around the sleeve in a surrounding manner.
(III) advantageous effects
The embodiment of the utility model provides a prevent excursion centering drill bit. The method has the following beneficial effects:
1. the drill bit works stably, and the drilling qualification rate is high: by arranging the sleeve and the positioning foot, the stability of the drill operation is improved, the drilling direction is not easy to deviate, the defects of manual operation are overcome, and the drilling qualification rate is high;
2. the drill bit is prepositioned and limited, and the drilling effect is good: when an inclined plane, an arc surface or a crossed hole is machined, the drill bit can be pre-positioned and limited by the positioning feet before the drill bit works, the drill bit is stable in centering, and the drilling effect is good;
3. the safety is high: by using the sleeve, the injury of the drill bit which rotates at a high speed by manual contact is avoided, and the use safety of the drill bit is improved;
4. the cutting blade is conveniently cooled, prolongs cutting sword life: by arranging the cooling holes extending to the cutting edges of the cutting knives, the cooling liquid can be directly delivered to the cutting edges of the cutting knives, the service life of the cutting knives is prolonged, and the working efficiency of the cutting knives is improved;
5. prevent the drilling hole face and produce the burr: by arranging the orifice chamfer, the orifice can be polished after the cutting knife drills, so that burrs are prevented from being generated on the drilled orifice;
6. compact structure, it is pleasing to the eye practical: through set up the drill bit and hold the chamber in the drill handle inside, put into the drill bit and hold the chamber when the drill bit does not use, compact structure, pleasing to the eye practicality.
Drawings
FIG. 1 is a schematic structural view of the drill bit of the present invention during operation;
FIG. 2 is a schematic structural view of the drill bit of the present invention after being retracted;
FIG. 3 is a schematic structural diagram of a drill bit according to the present invention;
in the figure: a drill bit 1; a fixed end 1.1; a drilling end 1.2; 1.2.1 parts of a drill tip; cutting knife 1.2.2; a chip groove is 1.2.3; chamfering the orifice by 1.2.4; cooling holes 1.3; a drill shank 2; a drill bit accommodating cavity 2.1; a microcylinder 3; a sleeve 4; a positioning foot 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to the attached drawings 1-3, the anti-deviation centering drill comprises a drill bit 1 and a drill handle 2, wherein the drill bit 1 comprises a fixed end 1.1 and a drilling end 1.2, and a drill bit accommodating cavity 2.1 is arranged in the drill handle 2;
the drill handle 2 is also internally provided with a micro air cylinder 3, and the output end of the micro air cylinder 3 penetrates through the drill bit accommodating cavity 2.1 and is connected with the fixed end 1.1 of the drill bit 1 through a bearing;
the drill bit further comprises a sleeve 4, wherein the sleeve 4 is connected to the drill shank 2; the side end of the sleeve 4 is connected with a positioning foot 5, and the horizontal height of the bottom of the positioning foot 5 is lower than that of the bottom of the sleeve 4.
Compared with the prior art, the utility model has the advantages that the stability of the drill bit operation is increased by arranging the sleeve 4 and the positioning foot 5, the drilling direction is not easy to deviate, the defects of manual operation are overcome, and the drilling qualification rate is high; when an inclined plane, an arc surface or a crossed hole is machined, the plurality of positioning feet 5 can pre-position and limit the drill bit 1 before the drill bit works, the drill bit is stable in centering, and the drilling effect is good; by using the sleeve 4, the injury of the drill bit which is manually contacted and rotates at a high speed is avoided, and the use safety of the drill bit 1 is improved; through set up the drill bit in the drill shank 2 inside and hold chamber 2.1, put into the drill bit when drill bit 2 does not use and hold 2.1 in the chamber, compact structure, pleasing to the eye practicality.
In this embodiment, the drilling end 1.2 comprises a drill tip 1.2.1 and cutting inserts 1.2.2 on both sides of the drill tip 1.2.1, as well as chip flutes 1.2.3; the chip groove 1.2.2 is opened on the side end of the drilling end 1.2 and extends to the cutting knife 1.2.2 in a spiral shape, the structural design is reasonable, waste materials generated by drilling can be timely cleaned through the chip groove 1.2.2, and the continuous drilling operation is convenient.
In this embodiment, the drill bit 1 is provided with the cooling hole 1.3 therein, the cooling hole 1.3 extends to the cutting edge of the cutting blade 1.2.2, and the cooling liquid can be directly sent to the cutting edge of the cutting blade 1.2.2, so that the service life of the cutting blade 1.2.2 is prolonged, and the working efficiency of the cutting blade 1.2.2 is improved.
In this embodiment, the drilling end 1.2 is further provided with an orifice chamfer 1.2.4, the orifice chamfer 1.2.4 is located above the cutting tool 1.2.2 and is complementary with the chip groove 1.2.3 in shape and arranged in a staggered manner, and the orifice chamfer 1.2.4 can polish the hole surface after the cutting tool 1.2.2 drills the hole, so that burrs on the drilling hole surface are prevented.
In this embodiment, location foot 5 sets up to the convex structure of indent, and location foot 5 is effectual with the work piece laminating, difficult skew after the location.
In this embodiment, the positioning legs 5 are provided in a plurality, and the plurality of positioning legs 5 are respectively arranged around the sleeve 4 in a surrounding manner, so as to enhance the stability of the support.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (6)

1. An anti-deviation centering drill comprises a drill bit and a drill handle, wherein the drill bit comprises a fixed end and a drilling end, and a drill bit accommodating cavity is formed in the drill handle;
the method is characterized in that: the drill bit comprises a drill bit accommodating cavity, a drill bit and a drill handle, wherein the drill bit accommodating cavity is formed in the drill bit accommodating cavity;
the drill bit further comprises a sleeve, wherein the sleeve is connected to the drill handle; the side end of the sleeve is connected with a positioning foot, and the horizontal height of the bottom of the positioning foot is lower than that of the bottom of the sleeve.
2. An anti-drift centering drill according to claim 1, wherein: the drilling end comprises a drill point, cutting cutters positioned on two sides of the drill point and a chip groove; the chip grooves are cut on the side end of the drilling end and extend to the cutting knife in a spiral shape.
3. An anti-drift centering drill according to claim 2, wherein: the drill bit is internally provided with a cooling hole, and the cooling hole extends to the cutting edge of the cutting knife.
4. An anti-drift centering drill according to claim 3, wherein: the drilling end is also provided with an orifice chamfer, and the orifice chamfer is positioned above the cutting knife, is complementary with the shape of the chip groove and is arranged in a staggered manner.
5. An anti-drift centering drill according to claim 1, wherein: the positioning feet are arranged into an inwards concave arc-shaped structure.
6. An anti-drift centering drill according to claim 5, wherein: the location foot is provided with a plurality ofly, and a plurality of location feet encircle respectively and set up around the sleeve.
CN202120300201.9U 2021-02-02 2021-02-02 Anti-deviation centering drill bit Active CN215145002U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120300201.9U CN215145002U (en) 2021-02-02 2021-02-02 Anti-deviation centering drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120300201.9U CN215145002U (en) 2021-02-02 2021-02-02 Anti-deviation centering drill bit

Publications (1)

Publication Number Publication Date
CN215145002U true CN215145002U (en) 2021-12-14

Family

ID=79409624

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120300201.9U Active CN215145002U (en) 2021-02-02 2021-02-02 Anti-deviation centering drill bit

Country Status (1)

Country Link
CN (1) CN215145002U (en)

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