CN217529330U

CN217529330U - Alloy drill bit based on threaded connection replaceable head

Info

Publication number: CN217529330U
Application number: CN202123205750.7U
Authority: CN
Inventors: 张松; 高建春
Original assignee: Changzhou Baier Cutting Tool Technology Co ltd
Current assignee: Changzhou Baier Cutting Tool Technology Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-10-04
Anticipated expiration: 2031-12-20

Abstract

The utility model discloses an alloy drill bit based on threaded connection interchangeable head, including milling post, drill bit, chip groove and fixed orifices. The utility model has the advantages that: mill and all be provided with the chip groove on post, the drill bit, and the chip groove link up from top to bottom, the chip groove is provided with four and constitutes helical configuration altogether, will mill the sweeps that the time spent of producing through the chip groove and discharge fast the embodiment of the utility model provides an, the bottom of drill bit is the indent formula and is provided with the constant head tank, mills the top welded fastening of post and has a locating convex block, and locating convex block all is bilateral symmetry formula all around with the constant head tank and is provided with four, and upper and lower one-to-one sets up, makes the drill bit and mills the butt joint of can fixing a position fast of post, and locating convex block's center department is provided with the screw, and the vertical fixed orifices that runs through on the drill bit is provided with locking screw, and the locking screw revolves soon with the screw and twist the locking, makes the staff can change its quick dismantlement after the drill bit damages, avoids causing unnecessary economic loss.

Description

Alloy drill bit based on threaded connection replaceable head

Technical Field

The utility model relates to an alloy drill bit specifically is an alloy drill bit based on threaded connection interchangeable head, belongs to alloy drill bit technical field.

Background

Twist drills are tools for drilling round holes in workpieces by means of rotary cutting relative to a fixed axis, are named after the fact that chip flutes are spiral and are shaped like twists, and alloy drill bits also belong to the twist drills.

However, most of the existing alloy drill bits have various problems:

1) Most of the drill bits and the milling columns on the existing alloy drill bits adopt an integrated structure, so that after the drill bits are damaged, workers cannot independently detach and replace the drill bits, and only can replace the whole device, thereby causing unnecessary economic loss;

2) The connecting rod on the existing alloy drill bit can not be stretched out and drawn back mostly, so that the whole device can not be adjusted to a proper length by a worker for use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an alloy drill bit based on threaded connection interchangeable head for the solution problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose: an alloy drill bit based on a threaded connection replaceable head, comprising:

the milling mechanism is composed of a milling column and a drill bit, the milling column of the circular columnar structure forms a main body structure of the alloy drill bit, and the drill bit is fixedly connected to the top end of the milling column;

the connecting mechanism is connected and fixed to the bottom of the milling mechanism, the first connecting rod is vertically welded and fixed to the bottom of the milling column, a cylindrical cavity larger than the first connecting rod is formed in the second connecting rod, and the first connecting rod is connected and fixed in the cavity of the second connecting rod.

As a further aspect of the present invention: milling and all being provided with the chip groove on post, the drill bit, and upper and lower chip groove link up, the chip groove is provided with four altogether and constitutes helical structure.

As a further aspect of the present invention: the milling column and the drill bit are both made of tungsten steel alloy, and a layer of CNC coating is sprayed on the outer surfaces of the milling column and the drill bit.

As the utility model discloses further scheme again: the bottom of drill bit is the indent formula and is provided with the constant head tank, mills the top welded fastening of post and has the location lug, and the location lug all is front-back bilateral symmetry formula with the constant head tank and is provided with four, and the one-to-one setting from top to bottom.

As a further aspect of the present invention: the center of the positioning lug is provided with a screw hole, a fixing hole vertically penetrates through the drill bit, a locking screw is arranged in the fixing hole, and the locking screw and the screw hole are screwed and locked.

As a further aspect of the present invention: the side wall of the first connecting rod is provided with a limiting groove, the top end of the second connecting rod is fixed with a clamping sleeve, the top end of the second connecting rod is connected with a shrinkage sleeve in a screwing mode, and the side wall of the interior of the shrinkage sleeve and the side wall of the top end of the second connecting rod are both provided with screwing threads.

The utility model has the advantages that:

1) The milling column and the drill bit are provided with chip removal grooves, the upper chip removal groove and the lower chip removal groove are communicated, the four chip removal grooves are arranged and form a spiral structure, and waste chips generated during milling are quickly discharged through the chip removal grooves;

2) In the embodiment of the utility model, the bottom of the drill bit is provided with a positioning groove in an inward concave manner, the top end of the milling column is fixedly welded with four positioning lugs, the four positioning lugs and the four positioning grooves are symmetrically arranged in a front-back left-right manner and are arranged in a one-to-one correspondence manner from top to bottom, so that the drill bit and the milling column can be quickly positioned and butted;

3) A screw hole is formed in the center of the positioning lug, a fixing hole vertically penetrates through the drill bit, a locking screw is arranged in the fixing hole and is screwed and locked with the screw hole, so that a worker can quickly detach and replace the drill bit after the drill bit is damaged, and unnecessary economic loss is avoided;

4) The milling column and the drill bit are both made of tungsten steel alloy, and a layer of CNC coating is sprayed on the outer surfaces of the milling column and the drill bit, so that the rigidity of the whole body formed by the milling column and the drill bit is ensured;

5) The side wall of the first connecting rod is provided with a limiting groove, the top end of the second connecting rod is fixed with a clamping sleeve, the top end of the second connecting rod is connected with a shrink sleeve in a screwing mode, the inner side wall of the shrink sleeve and the top side wall of the second connecting rod are respectively provided with a screwing thread, the clamping sleeve is extruded to shrink through screwing the shrink sleeve, and then a worker can rapidly adjust the first connecting rod and the second connecting rod to proper lengths.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the drill bit of the present invention;

fig. 3 is the schematic view of the split structure of the connecting rod of the present invention.

In the figure: 1. milling column, 2, drill bit, 3, chip removing groove, 4, fixing hole, 5, locking screw, 6, positioning lug, 7, screw hole, 8, first connecting rod, 9, limiting groove, 10, second connecting rod, 11, cutting sleeve, 12, shrink sleeve and 13 and screwing thread.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example one

Referring to fig. 1 to 3, an alloy drill bit based on a threaded connection replaceable head includes:

the milling mechanism comprises a milling column 1 and a drill bit 2, the milling column 1 with a circular columnar structure forms a main body structure of the alloy drill bit, and the drill bit 2 is fixedly connected to the top end of the milling column 1;

the connecting mechanism is composed of a first connecting rod 8 and a second connecting rod 10, the connecting mechanism is fixedly connected to the bottom of the milling mechanism, the first connecting rod 8 is vertically welded and fixed to the bottom of the milling column 1, a cylindrical cavity larger than the first connecting rod 8 is formed in the second connecting rod 10, and the first connecting rod 8 is fixedly connected to the cavity of the second connecting rod 10.

The embodiment of the utility model provides an in, mill and all be provided with chip groove 3 on post 1, the drill bit 2, and chip groove 3 link up from top to bottom, chip groove 3 is provided with four altogether and constitutes helical structure, and the sweeps that produce when will milling through chip groove 3 are discharged fast.

The embodiment of the utility model provides an in, the bottom of drill bit 2 is the indent formula and is provided with the constant head tank, and the top welded fastening who mills post 1 has positioning lug 6, and positioning lug 6 all is all that bilateral symmetry formula is provided with four all around with the constant head tank, and the one-to-one setting from top to bottom, makes drill bit 2 and mills post 1 and can fix a position the butt joint fast.

In the embodiment of the present invention, the center of the positioning bump 6 is provided with a screw hole 7, a fixing hole 4 is vertically provided on the drill bit 2, a locking screw 5 is provided in the fixing hole 4, and the locking screw 5 and the screw hole 7 are screwed and locked, so that the worker can rapidly detach and replace the drill bit 2 after the damage, thereby avoiding unnecessary economic loss.

Example two

The embodiment of the utility model provides an in, it all adopts the tungsten steel alloy preparation to constitute to mill post 1, drill bit 2 to all spray the surface of milling post 1, drill bit 2 and have one deck CNC coating, guarantee to mill the holistic rigidity that post 1, drill bit 2 constitute.

In the embodiment of the present invention, the side wall of the first connecting rod 8 is provided with a limiting groove 9, the top end of the second connecting rod 10 is fixed with a sleeve 11, and is screwed with a shrink sleeve 12 on the top end thereof, the inner side wall of the shrink sleeve 12 and the top side wall of the second connecting rod 10 are both provided with a screw thread 13, the sleeve 11 is extruded to shrink by screwing the shrink sleeve 12, and then the worker can rapidly adjust the first connecting rod 8 and the second connecting rod 10 to an appropriate length.

The working principle is as follows: when the alloy drill bit is used, the drill bit 2 is in positioning butt joint with the milling column 1 through the positioning lug 6, then the drill bit 2 penetrates through the fixing hole 4 through the locking screw 5 and is screwed and locked with the screw hole 7, then the drill bit 2 and the milling column 1 are fixed into a whole, then a worker can adjust the whole length between the first connecting rod 8 and the second connecting rod 10 according to needs, then the screwing shrinkage sleeve 12 extrudes the clamping sleeve 11 to shrink, and then the first connecting rod 8 and the second connecting rod 10 are quickly locked.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims

1. An alloy drill bit based on a threaded connection replaceable head is characterized by comprising:

the milling mechanism is composed of a milling column (1) and a drill bit (2), the milling column (1) with a circular columnar structure forms a main body structure of the alloy drill bit, and the drill bit (2) is fixedly connected to the top end of the milling column (1);

the connecting mechanism is composed of a first connecting rod (8) and a second connecting rod (10), the connecting mechanism is fixedly connected to the bottom of the milling mechanism, the first connecting rod (8) is vertically welded and fixed to the bottom of the milling column (1), a cylindrical cavity larger than the first connecting rod (8) is formed in the second connecting rod (10), and the first connecting rod (8) is fixedly connected to the cavity of the second connecting rod (10);

the bottom of the drill bit (2) is provided with a positioning groove in a concave manner, the top end of the milling column (1) is fixedly welded with four positioning lugs (6), and the four positioning lugs (6) and the positioning grooves are symmetrically arranged in a front-back left-right manner and are arranged in a one-to-one correspondence manner from top to bottom;

the center of the positioning lug (6) is provided with a screw hole (7), a fixing hole (4) vertically penetrates through the drill bit (2), a locking screw (5) is arranged in the fixing hole (4), and the locking screw (5) and the screw hole (7) are screwed and locked.

2. The alloy drill bit based on the threaded connection replaceable head as claimed in claim 1, characterized in that: milling column (1), all being provided with chip groove (3) on drill bit (2), and upper and lower chip groove (3) link up, chip groove (3) are provided with four altogether and constitute helical structure.

3. The alloy drill bit based on the threaded connection replaceable head as claimed in claim 1, characterized in that: the milling column (1) and the drill bit (2) are both made of tungsten steel alloy, and a layer of CNC coating is sprayed on the outer surfaces of the milling column (1) and the drill bit (2).

4. The alloy drill bit based on the threaded connection replaceable head as claimed in claim 1, characterized in that: the side wall of the first connecting rod (8) is provided with a limiting groove (9), the top end of the second connecting rod (10) is fixed with a clamping sleeve (11), the top end of the second connecting rod is connected with a shrink sleeve (12) in a screwing mode, and the inner side wall of the shrink sleeve (12) and the top end side wall of the second connecting rod (10) are provided with screwing threads (13).