CN211071954U - Alloy composite drill bit - Google Patents

Abstract

The utility model discloses an alloy composite drill bit, including the countersink, countersink one side outer wall center department has seted up the through-hole, and the inside grafting of through-hole has the drillstock, and the hole has all been seted up to countersink side outer wall both sides, and the inside threaded connection of hole has stop screw, and the countersink is fixed connection through stop screw and drillstock, and drillstock one end outer wall center department threaded connection has the pole that connects, and the drillstock keeps away from the other end welding that connects the pole and has the connecting block, and the connecting block is provided with the chamfer sword on keeping away from one side outer wall of countersink. The utility model discloses can be when drilling, make the drill bit have the function of drilling, counter sinking and chamfer concurrently, be convenient for reduce the tool changing number of times, guarantee the machining precision, can improve the work efficiency of drilling, can be favorable to having saved staff's work load, improve work efficiency and can be when the drill bit wearing and tearing are serious, can the quick replacement tool bit, be favorable to reducing the manufacturing cost of drill bit, avoid changing the tool bit untimely, and the condition that the machining precision that causes reduces takes place.

Description

Alloy composite drill bit

Technical Field

The utility model relates to an alloy composite drill bit technical field especially relates to an alloy composite drill bit.

Background

The drill bit is a cutting tool used by a common drill or drilling machine to cut a circular hole, and the basic principle of the drill bit is to rotate the edge of the drill bit, cut a workpiece, and remove drill cuttings from a drill slot.

The cutting edge of drill bit is located its tool bit, plays the drilling cutting effect, and in long-term operation, the tool bit also is the most serious position of wearing and tearing on the drill bit, when the cutting edge of drill bit was worn and torn, can influence the precision of work piece processing, needs the workman to polish the drill bit, wastes time and energy, and the holistic mode cost of this kind of change drill bit that has now is on the high side, and current drill bit when drilling in addition, some holes need the chamfer. Reaming and counter boring are handled, among the prior art, all need the tool changing when chamfer or counter boring, and the tool changing is comparatively frequent moreover, has reduced machining efficiency, consequently, need to design an alloy composite drill bit to solve above-mentioned problem urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that the time is wasted because the whole cost of replacement of current tool bit that exists among the prior art is higher than normal and countersink or chamfer can not be processed once, and the composite alloy drill bit that provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an alloy composite drill bit, includes the countersink, countersink one side outer wall center department has seted up the through-hole, and the inside grafting of through-hole has the drill shank, the hole has all been seted up to countersink side outer wall both sides, and the inside threaded connection of hole has stop screw, the countersink is fixed connection through stop screw and drill shank, the threaded connection of drill shank one end outer wall center department has the pole that connects, and the drill shank keeps away from the other end welding that connects the pole and has the connecting block, the connecting block is provided with the chamfer sword on keeping away from one side outer wall of countersink.

Furthermore, the cutter body is welded at the center of the outer wall of one side, close to the chamfering tool, of the connecting block, the chip guide groove is formed in the outer wall of the side face of the cutter body, the mounting hole is formed in the outer wall of the end, far away from the connecting block, of the cutter body, and the cutter head is inserted into one end of the cutter body through the mounting hole.

Further, tool bit one side is that the welding of outer wall center department has the installation axle, and the welding has the screens journal stirrup on the installation axle keeps away from one side outer wall of tool bit, the mounting hole inside is provided with the screens hole, and the mounting hole is fixed connection through the cooperation between screens hole and the screens journal stirrup and installation axle.

Further, the reaming cutter is sleeved on the outer wall of the side face of the reaming cutter, threaded holes are formed in two sides of the outer wall of the reaming cutter, fastening bolts are connected to the inner threads of the threaded holes, and the reaming cutter is fixedly connected with the reaming cutter through the fastening bolts.

Further, expand the sword outside outer wall on the embedding have the equidistance to be the ring configuration distribution expand the cutting edge, and expand the cutting edge height and the width of cutting edge all be greater than with the cutting edge height and the width of ream cutting edge.

Furthermore, the countersink blades which are distributed annularly are embedded into the outer wall of one end, close to the connecting block, of the countersink, and the countersink blades and the reamer blades are distributed in a cross structure.

The utility model has the advantages that:

1. through the chamfer cutter and the countersink, the drill bit can have the functions of drilling, countersink and chamfering during drilling, the number of times of tool changing is convenient to reduce, the machining precision is guaranteed, and the working efficiency of drilling can be improved.

2. Through the cutter that expands that sets up, can avoid the exclusive use countersink processing drilling when the countersink, also can reduce the processing number of times to drilling, unite two into one the twice process, be favorable to having saved staff's work load, improve work efficiency.

3. Through the cutter head that sets up, can be when the drill bit wearing and tearing are serious, can the quick replacement cutter head for the drill bit need not change the drill bit wholly, only need to change the cutter head just can continue processing, is favorable to reducing the manufacturing cost of drill bit, avoids changing the cutter head untimely, and the condition that the machining precision that causes reduces takes place.

Drawings

FIG. 1 is a front view of an alloy composite drill according to the present invention;

FIG. 2 is a partial cross-sectional view of an alloy composite drill bit according to the present invention;

fig. 3 is a schematic structural view of a tool body of an alloy composite drill bit according to the present invention;

fig. 4 is a schematic view of a tool bit structure of an alloy composite drill bit according to the present invention;

fig. 5 is a side view of the countersink structure of the alloy composite drill provided by the present invention.

In the figure: the tool comprises a connecting rod 1, a countersink 2, a drill shank 3, a cutter body 4, a cutter head 5, a reamer 6, a threaded hole 7, a fastening bolt 8, a chamfering cutter 9, a connecting block 10, a limiting screw 11, a chip guide groove 12, a mounting hole 13, a clamping hole 14, a clamping support lug 15, a mounting shaft 16, a reaming edge 17, a countersink 18, a through hole 19 and an inner hole 20.

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.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1 to 5 simultaneously, an alloy composite drill bit, including countersink 2, a counter bore is performed to the drilled hole, a through hole 19 is provided at the center of the outer wall of one side of countersink 2, for installing a drill bit, and a drill shank 3 is inserted inside the through hole 19, and is convenient to be fixed with a drilling machine, inner holes 20 are provided at both sides of the outer wall of the side of countersink 2, for placing limit screws, and the inner holes 20 are internally and threadedly connected with limit screws 11, for locking the countersink 2, and preventing rotation during machining, the countersink 2 is fixedly connected with the drill shank 3 through the limit screws 11, the center of the outer wall of one end of the drill shank 3 is threadedly connected with a connecting rod 1, so that the drill bit is installed on the drilling machine, and the other end of the drill shank 3, which is far away from the connecting rod 1, is welded with a connecting block 10, and a chamfer cutter.

Further, the cutter body 4 is welded at the center of the outer wall of one side, close to the chamfer cutter 9, of the connecting block 10 and used for fixing the cutter head 5, the chip guide grooves 12 are formed in the outer wall of the side face of the cutter body 4 and used for guiding chips generated during drilling, the outer wall of one end, far away from the connecting block 10, of the cutter body 4 is provided with a mounting hole 13, and the cutter head 5 is inserted into one end of the cutter body 4 through the mounting hole 13.

Further, installation axle 16 is welded for outer wall center department in tool bit 5 one side for at mounting hole 13 internally mounted tool bit 5, and the welding has screens journal stirrup 15 on the installation axle 16 keeps away from one side outer wall of tool bit 5, can lock tool bit 5 with screens hole 14 cooperation, mounting hole 13 is inside to be provided with screens hole 14 for joint screens journal stirrup 15, and mounting hole 13 is fixed connection through the cooperation between screens hole 14 and the screens journal stirrup 15 and installation axle 16.

Further, expand sword 6 has been cup jointed on the outer wall of 2 side faces of countersink for expand the aperture, reduce the processing number of times, and expand 6 outside outer wall both sides of sword and all open threaded hole 7, and threaded hole 7 internal thread is connected with fastening bolt 8, is used for fixed 6 and countersink 2 of expanding the sword, expands sword 6 and is fixed connection through fastening bolt 8 and countersink 2.

Further, expand the sword 6 outside outer wall on the embedding have the equidistance to be the annular structure distribution expand the cutting edge 17 for carry out the reaming to the hole that bores, and expand the cutting edge height and the width of cutting edge 17 and all be greater than with the cutting edge height and the width of countersink 18.

Further, the outer wall of one end of the countersink 2 close to the connecting block 10 is embedded with countersink blades 18 which are distributed annularly at equal intervals and used for countersinking the drilled hole, and the countersink blades 18 and the reamer blades 17 are distributed in a cross structure.

The working principle is as follows: when the drill bit is used, an operator firstly selects a proper drill bit according to the size of a drilled hole, then can select whether to drill according to the countersink 2 and the reamer 6 according to the machining requirements, firstly inserts the tool bit 5 into the mounting hole 13 through the mounting shaft 16 during machining, then twists the tool bit 5 to enable the clamping support lug 15 on the tool bit to be clamped with the clamping hole 14 in the mounting hole 13, then sleeves the countersink 2 outside the drill shank 3, aligns the inner hole 20 on the countersink 2 with the hole on the drill shank 3, then fixes the countersink 2 and the drill shank 3 together by using the limiting screw 11 to prevent the countersink 2 from moving and causing countersink failure during drilling, then installs the reamer 6 on the reamer 2, fixes the reamer 6 by using the fastening bolt 8 to prevent the reamer 6 from moving, fixes the drill bit on a drill bed by using the connecting rod after the drill bit is assembled, and then drills a part to be machined, when drilling, tool bit 5 drills to the part earlier with cutter body 4, and later chamfer sword 9 carries out the chamfer to the hole of drilling, when continuing drilling, countersink sword 182 can further process hole with reamer 17, can once only accomplish the processing of chamfer, reaming and countersink, is favorable to improving machining efficiency, and when tool bit 5 wearing and tearing were serious, can quick replacement tool bit 5, avoid influencing part production moreover.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides an alloy composite drill bit, includes countersink (2), its characterized in that, countersink (2) one side outer wall center department has seted up through-hole (19), and through-hole (19) inside grafting has drillstock (3), hole (20) have all been seted up to countersink (2) side outer wall both sides, and hole (20) internal thread is connected with stop screw (11), countersink (2) are fixed connection through stop screw (11) and drillstock (3), drillstock (3) one end outer wall center department threaded connection has and connects pole (1), and drillstock (3) keep away from the other end welding that connects pole (1) and have connecting block (10), be provided with chamfer sword (9) on the one side outer wall of countersink (2) is kept away from in connecting block (10).

2. The alloy composite drill bit as claimed in claim 1, wherein the cutter body (4) is welded at the center of the outer wall of one side of the connecting block (10) close to the chamfer cutter (9), the chip guide groove (12) is formed in the outer wall of the side surface of the cutter body (4), a mounting hole (13) is formed in the outer wall of one end of the cutter body (4) far away from the connecting block (10), and the cutter head (5) is inserted into one end of the cutter body (4) through the mounting hole (13).

3. The alloy composite drill bit as claimed in claim 2, wherein the mounting shaft (16) is welded at the center of the outer wall of one side of the cutter head (5), the clamping support lug (15) is welded on the outer wall of one side of the mounting shaft (16) far away from the cutter head (5), the clamping hole (14) is formed in the mounting hole (13), and the mounting hole (13) is fixedly connected with the mounting shaft (16) through the matching between the clamping hole (14) and the clamping support lug (15).

4. The alloy composite drill bit as claimed in claim 1, characterized in that the outer wall of the side surface of the countersink (2) is sleeved with a reamer (6), both sides of the outer wall of the reamer (6) are provided with threaded holes (7), the threaded holes (7) are internally and threadedly connected with fastening bolts (8), and the reamer (6) is fixedly connected with the countersink (2) through the fastening bolts (8).

5. The alloy composite drill bit as claimed in claim 4, characterized in that the outer wall of the expanding cutter (6) is embedded with expanding blades (17) which are distributed in an annular structure at equal intervals, and the blade height and the width of each expanding blade (17) are larger than the blade height and the width of the countersink blade (18).

6. An alloy composite drill bit as claimed in claim 2, characterized in that the outer wall of one end of the countersink (2) close to the connecting block (10) is embedded with countersink blades (18) which are distributed annularly at equal intervals, and the countersink blades (18) and the reamer blades (17) are distributed in a cross structure.

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