CN214684409U

CN214684409U - Detachable drill bit

Info

Publication number: CN214684409U
Application number: CN202120645210.1U
Authority: CN
Inventors: 刘阳河; 王永齐
Original assignee: Changzhou Sizhi Xingrui Precision Machinery Co ltd
Current assignee: Changzhou Sizhi Xingrui Precision Machinery Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-11-12
Anticipated expiration: 2031-03-30

Abstract

The utility model discloses a detachable drill bit, including the drill bit, drill bit one end is equipped with the spiral, and the other end is equipped with connecting portion, is provided with between the two adjacent helical cutting edges and walks the chip groove, walk the chip groove along helical cutting edge from spiral one end to connecting portion one end, install the stalk portion on the drill bit, stalk portion one end is equipped with the clamping part, install coupling mechanism between stalk portion and the drill bit. Because the working part of the drill bit is easy to wear and needs to be replaced frequently during drilling, and because the working part and the handle part are of an integral structure, when the working part of the drill bit needs to be replaced due to wear, the whole drill bit can be replaced, so that materials are greatly wasted, and the cost of the drill bit is increased. The utility model discloses reduced user's use cost and reduced the waste of material, reduced the drill bit cost.

Description

Detachable drill bit

Technical Field

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

Background

The drill bit is a cutting tool used by a typical drill or drilling machine to cut a circular hole. The basic principle of the drill bit is to rotate the edge cutting of the drill bit, cut a workpiece and remove drill cuttings through a drill slot. Commonly used drill bits mainly include twist drills, flat drills, center drills, deep hole drills, and trepanning drills. Reamers and reamers are not capable of drilling solid materials, but they are also traditionally classified as drills.

Chinese patent publication No. CN105710420B discloses a self-cooling detachable drill bit device, wherein a cavity is provided inside a drill bit body, the drill bit body comprises a drill bit at the top, a drill rod at the middle part, and a connecting part with the tail part pivoted to a drill bit seat, the drill bit is in an inverted cone shape, the drill rod is formed by connecting at least two inverted round tables, and the drill bit and the drill rod, and the inverted round tables of the drill rod are detachably connected; the drill bit seat comprises a pivoting section for pivoting the connecting part of the drill bit body, and the pivoting section body is connected with two pipes which extend outwards and are respectively a grinding aid liquid pipe and a cooling gas pipe. The drill bit, the drill rod and all parts of the drill rod are detachably designed, so that the drill bit and the damaged parts on the drill rod can be conveniently replaced, and the whole drill bit does not need to be replaced because a certain part of the drill bit is damaged.

Chinese patent publication No. CN207272253U discloses a large-scale drill with a detachable cutting edge in the drilling field, which comprises a circular drill body, wherein one end of the circular drill body is provided with a clamping part, the other end of the circular drill body is provided with a spiral, the spiral comprises a plurality of groups of spiral cutting edges, a chip groove is arranged between two adjacent groups of spiral cutting edges, and the chip groove extends to one end of the clamping part from one end of the spiral along the spiral cutting edges; each spiral cutting blade is provided with a bolt fixing hole, the bolt fixing holes are sequentially arranged along the spiral cutting blades at intervals, each bolt fixing hole is provided with a detachable cutter, the center of each detachable cutter is provided with a bolt connecting hole, the detachable cutters are fixed on the bolt fixing holes through bolts, and each bolt fixing hole is matched with the detachable cutter to be provided with a base; the detachable cutter is arranged on one side of the spiral cutting blade.

The problem of drill bit material waste exists in the prior art when the working part of the drill bit needs to be replaced due to abrasion, and the installation is complex, so that the operation of workers is not facilitated.

SUMMERY OF THE UTILITY MODEL

In view of the above problems in the prior art, the present invention is directed to a detachable drill.

The utility model provides a following technical scheme:

a detachable drill bit comprises a drill bit, wherein one end of the drill bit is provided with a spiral, the other end of the drill bit is provided with a connecting part, a chip groove is formed between every two adjacent spiral cutting edges, the chip groove is arranged from one end of the spiral to one end of the connecting part along the spiral cutting edges, a handle part is arranged on the drill bit, one end of the handle part is provided with a clamping part, a connecting mechanism is arranged between the handle part and the drill bit, and the connecting mechanism comprises a square hole I and is arranged in the connecting part; the two ends of the square hole of the iron block are both provided with the iron block, and a first spring is arranged between the two iron blocks; the first groove is arranged in one end, far away from the clamping part, of the handle part; the square hole II is formed in one end, far away from the clamping part, of the handle part; the second spring is installed in the first groove, and the connecting portion is installed in the second spring.

Specifically, coupling mechanism still includes install recess two on the connecting portion, install the fixed block just on the recess two fixed block fixed connection be in the one end of clamping part is kept away from to the stalk portion.

Specifically, the inner diameter of the second spring is larger than the diameter of the connecting part and smaller than the diameter of the first groove.

Specifically, the first groove is provided with two grooves with different diameters, the diameter of the inner groove is larger than that of the outer groove, the diameter of the inner groove is equal to the outer diameter of the second spring, and the diameter of the outer groove is equal to that of the connecting portion.

Specifically, the fixed block surface runs through and is provided with the spout, connecting portion are located inside the spout, the fixed block surface is provided with spacing counter bore, spacing counter bore with the spout is corresponding.

Specifically, the diameter size of the second groove is equal to the width size of the sliding groove, and clearance fit is adopted.

Specifically, the diameter size of the connecting part is equal to the inner diameter size of the limiting counter bore, and clearance fit is adopted.

The utility model has the advantages that:

1. because the working part of the drill bit is easy to wear and needs to be replaced frequently during drilling, and because the working part and the handle part are of an integral structure, when the working part of the drill bit needs to be replaced due to wear, the whole drill bit can be replaced, so that materials are greatly wasted, and the cost of the drill bit is increased. The utility model discloses reduced user's use cost and reduced the waste of material, reduced the drill bit cost.

2. The utility model discloses it is convenient to install, has solved the complicated problem that is unfavorable for staff's operation of installation that exists among the prior art.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the internal structure of embodiment 1 of the present invention;

fig. 2 is a front view of embodiment 1 of the present invention;

fig. 3 is a schematic view of the internal structure of embodiment 2 of the present invention;

fig. 4 is a schematic view of a drill bit according to embodiment 2 of the present invention;

fig. 5 is a schematic view of a fixing block according to embodiment 2 of the present invention;

labeled as: 1. a drill bit; 2. a chip groove is formed; 3. a connecting portion; 4. a handle; 5. a clamping portion; 10. a connecting mechanism; 101. an iron block; 102. a first square hole; 103. a first spring; 104. a second spring; 105. a first groove; 106. a second square hole; 107. a second groove; 108. a fixed block; 109. a chute; 110 to limit the counterbore.

Detailed Description

Various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

As shown in fig. 1 and 2, a detachable drill comprises a drill bit 1, wherein one end of the drill bit 1 is provided with a spiral, the other end of the drill bit is provided with a connecting portion 3, a chip groove 2 is arranged between two adjacent spiral blades, the chip groove 2 is arranged from one end of the spiral to one end of the connecting portion 3 along the spiral blades, a handle portion 4 is arranged on the drill bit 1, one end of the handle portion 4 is provided with a clamping portion 5, and a connecting mechanism 10 is arranged between the handle portion 4 and the drill bit 1.

The connecting mechanism 10 comprises a first square hole 102 arranged in the connecting part 3; the two ends of the square hole I102 of the iron block 101 are both provided with the iron block 101, and a spring I103 is arranged between the two iron blocks 101; a first groove 105 is arranged in one end of the handle part 4 far away from the clamping part 5; a second square hole 106 is formed in one end, far away from the clamping part 5, of the handle part 4;

the second spring 104 is mounted in the first groove 105, and the connecting part 3 is mounted in the second spring 104. The inner diameter of the second spring 104 is larger than the diameter of the connecting part 3 and smaller than the diameter of the first groove 105.

The width size of the first square hole 102 and the second square hole 106 is equal to the size of the iron block 101. The first groove 105 is provided with two grooves with different diameters, the diameter of the inner groove is larger than that of the outer groove, the diameter of the inner groove is equal to the outer diameter of the second spring 104, and the diameter of the outer groove is equal to that of the connecting portion 3.

The utility model discloses embodiment 1's theory of operation does:

pressing down iron block 101, inserting drill bit 1 into first groove 105 of shank 4, inserting connecting portion 3 into second spring 104, wherein second spring 104 abuts against iron block 101, continuing to push drill bit 1, when iron block 101 reaches the position of second square hole 106, the action force of first spring 103 pushes iron block 101 out of second square hole 106, and at the moment, iron block 101 enables drill bit 1 to be fixed on shank 4. When the drill bit 1 needs to be replaced, the iron block 101 is pressed down, and the drill bit 1 is pulled out.

Example 2

As shown in fig. 3-5, a detachable drill bit, includes

drill bit

1, 1 one end of drill bit is equipped with the spiral, and the other end is equipped with connecting portion 3, is provided with between the two adjacent helical cutting edges and walks chip groove 2, walk chip groove 2 along helical cutting edge from spiral one end to connecting portion 3 one end, install stalk portion 4 on

drill bit

1, 4 one ends of stalk portion are equipped with clamping part 5, install coupling mechanism 10 between stalk portion 4 and the drill bit 1.

Connecting mechanism 10 still includes that recess one 105 is established in the one end that clamping part 5 was kept away from to stalk portion 4, and spring two 104 is installed in recess one 105, just connecting portion 3 is installed in spring two 104, install recess two 107 on the connecting portion 3, install fixed block 108 on recess two 107 just fixed block 108 passes through screw fixed connection and is in the one end that clamping part 5 was kept away from to stalk portion 4.

Referring to fig. 5, a sliding groove 109 is formed through the surface of the fixed block 108, the connecting portion 3 is located inside the sliding groove 109, and a limiting counter bore 110 is formed in the surface of the fixed block 108, where the limiting counter bore 110 corresponds to the sliding groove 109. The diameter of the second groove 107 is equal to the width of the sliding groove 109, and clearance fit is adopted. The diameter of the connecting part 3 is equal to the inner diameter of the limiting counter bore 110, and clearance fit is adopted.

The utility model discloses embodiment 2's theory of operation does:

the drill bit 1 is pushed into a first groove 105 in the handle part 4, a fixing block 108 is pushed, the fixing block 108 is clamped on a second groove 107 of the connecting part 3, the second spring 104 abuts against the fixing block 108, the diameter of the connecting part 3 is equal to the inner diameter of the limiting counter bore 110 in the fixing block 108, clearance fit is adopted, the drill bit 1 is fixed on the fixing block 108, and the fixing block 108 is fixed on the handle part 4 through screws. When the drill bit 1 needs to be replaced, the drill bit 1 can be taken down after the screw is taken down and the fixing block is taken down.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A detachable drill bit comprises a drill bit (1), wherein one end of the drill bit (1) is provided with a screw, the other end of the drill bit is provided with a connecting part (3), a chip groove (2) is arranged between two adjacent helical cutting edges, the chip groove (2) is arranged from one end of the screw to one end of the connecting part (3) along the helical cutting edge, a handle part (4) arranged on the drill bit (1), one end of the handle part (4) is provided with a clamping part (5), a connecting mechanism (10) is arranged between the handle part (4) and the drill bit (1),

characterized in that said connection means (10) comprise

The first square hole (102) is arranged in the connecting part (3);

the two ends of the first square hole (102) are provided with the iron blocks (101), and a first spring (103) is arranged between the two iron blocks (101);

the first groove (105) is arranged in one end, far away from the clamping part (5), of the handle part (4);

the second square hole (106) is formed in one end, far away from the clamping part (5), of the handle part (4);

a second spring (104) mounted in the first groove (105), and the connecting portion (3) is mounted in the second spring (104).

2. The detachable drill bit of claim 1, wherein the connecting mechanism (10) further comprises a second groove (107) installed on the connecting portion (3), a fixing block (108) is installed on the second groove (107), and the fixing block (108) is fixedly connected to an end of the handle portion (4) far away from the clamping portion (5).

3. The detachable drill according to any of the claims 1 to 2, characterized in that the inner diameter of the second spring (104) is larger than the diameter of the connection part (3) and smaller than the diameter of the first recess (105).

4. The detachable drill according to claim 1, characterized in that the first recess (105) is provided with two recesses of different diameters, and the inner recess diameter is larger than the outer recess diameter, which is equal to the outer diameter of the second spring (104), and the outer recess diameter is equal to the diameter of the connecting portion (3).

5. The detachable drill bit according to claim 2, wherein a sliding groove (109) is formed in a surface of the fixing block (108) in a penetrating manner, the connecting portion (3) is located inside the sliding groove (109), a limiting counter bore (110) is formed in a surface of the fixing block (108), and the limiting counter bore (110) corresponds to the sliding groove (109).

6. The detachable drill according to claim 5, characterized in that the diameter of the second groove (107) is equal to the width of the sliding groove (109) and is a clearance fit.

7. The detachable drill bit of claim 5, wherein the diameter of the connecting part (3) is equal to the inner diameter of the limiting counter bore (110), and a clearance fit is adopted.