CN215033887U

CN215033887U - Concatenation formula drill bit

Info

Publication number: CN215033887U
Application number: CN202120785850.2U
Authority: CN
Inventors: 刘阳河
Original assignee: Changzhou Sizhi Xingrui Precision Machinery Co ltd
Current assignee: Changzhou Sizhi Xingrui Precision Machinery Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-12-07
Anticipated expiration: 2031-04-16

Abstract

The utility model provides a splicing type drill bit, which comprises a drill bit body and an installation mechanism, wherein the drill bit body is divided into a drill bit tail part, a middle connection section and a drill handle, the tail part of the drill bit is provided with a connecting seat, the outer wall of the connecting seat is provided with external threads, the mounting mechanism is positioned in the middle connecting section, the middle connecting section is provided with a groove which is divided into a fixed groove and a connecting groove through a partition plate, a section of internal thread is arranged in the connecting groove, the middle connecting section is also provided with a sliding groove communicated with the fixed groove, a first sliding rod and a second sliding rod are arranged in the sliding groove, install return spring one between first slide bar and the second slide bar, install the connecting seat in the fixed slot and evenly lay the stopper around the connecting seat, connect through return spring two between connecting seat and the stopper, be equipped with the indent on the drillstock, the utility model discloses compact structure, it is with low costs, comparatively practical.

Description

Concatenation formula drill bit

Technical Field

The utility model belongs to the technical field of the drilling tool, concretely relates to concatenation formula drill bit.

Background

The drill bit is drilling out through-hole or blind hole on the entity material, and can be to the reaming cutter in existing hole, the drill bit of using always mainly has fluted drill, flat drill, central drill, deep hole drill, be important machine tool, when the drill bit was used in the lathe, along with the live time increases, the wearing and tearing influence drilling quality can appear in the drill bit afterbody, or can lead to the drill bit fracture because of the misoperation, need change whole drill bit continuation work this moment, this operating cost is higher, it is comparatively serious extravagant.

If a publication number is CN207372356U, a spliced twist drill comprises a connector, an operating handle, a rubber sleeve, a first thread connecting groove, a second thread connecting groove, a connecting shell, a drill bit, a chip discharge groove, a connecting groove, a polishing head, a positioning block and a filling groove, wherein the connecting groove is arranged at the connector, so that the connection between the twist drill and a drilling machine is more stable, the safety of operators is ensured, the positioning block is arranged inside the drill bit, so that the positioning of the drill bit is more accurate during drilling, the drilling efficiency of the twist drill is improved, a filling layer is arranged on the inner wall of the drill bit, a certain amount of refrigerant can be placed in the filling layer, the temperature is higher during polishing the drill bit, the temperature can be reduced by refrigeration, the service life of the drill bit is longer, the polishing head is arranged, after the drill bit is generally drilled, the surface of a workpiece is rougher due to the particularity of a cutting edge of the drill bit, the polishing head can polish the twist drill bit, so that the surface of the workpiece is smooth.

Threaded connection is adopted in the splicing mode in the prior art, and when the twist drill is used in a high-speed rotating state, the threaded connection part can be loosened to influence the drilling quality.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem existing in the prior art, the utility model provides a concatenation formula drill bit.

The utility model provides a following technical scheme:

the utility model provides a concatenation formula drill bit, includes drill bit body and installation mechanism, and the drill bit body divide into drill bit afterbody, intermediate junction section and drillstock, install the connecting seat on the drill bit afterbody, the connecting seat outer wall is equipped with the external screw thread, and installation mechanism is located the intermediate junction section, and installation mechanism includes first slide bar, elasticity depression bar and briquetting, be equipped with the recess on the intermediate junction section, the recess divide into fixed slot and spread groove through the baffle, is equipped with one section internal thread in the spread groove cell wall, still is equipped with on the intermediate junction section with the communicating spout of fixed slot, installs first slide bar and second slide bar in the spout, install return spring one between first slide bar and the second slide bar, install the connecting seat in the fixed slot and evenly lay connecting seat stopper all around, connect through return spring two between connecting seat and the stopper, be equipped with the indent on the drillstock.

Furthermore, a positioning rod is movably mounted on the tail of the drill bit and is positioned on two sides of the connecting seat.

Furthermore, a positioning groove corresponding to the positioning rod is arranged on one side of the middle connecting section.

Furthermore, a pressing block is installed on the other side of the first sliding rod, and the pressing block is located in the pressing groove when the drill bit is spliced.

Furthermore, a plurality of elastic pressing rods are installed on the other side of the second sliding rod, and the other side of each elastic pressing rod is installed on a limiting block.

Furthermore, the drill handle is provided with an installation rod, and the installation rod is provided with an elastic lug.

Furthermore, the middle connecting section is provided with a mounting through hole.

The utility model has the advantages that:

1. the drill bit body is divided into three parts, when the drill bit tail is damaged in the using process, the drill bit tail is directly replaced, the cost can be saved, and the operation is simple.

2. The drill bit concatenation department is equipped with many places fixed establishment, prevents that the drill bit when using, because of the insecure emergence misoperation in drill bit concatenation department.

3. The drill handle is arranged on the middle connecting section through the mounting rod and the elastic lug, so that the drill handles with different sizes can be replaced at any time, and the structure of the splicing part is compact and firm.

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 front view of the present invention;

fig. 2 is a cross-sectional view of the intermediate connection section of the present invention;

fig. 3 is a left view structure diagram of the fixing groove of the present invention.

Labeled as: 100. a drill shank; 101. pressing a groove; 102. an elastic bump; 103. mounting a rod; 200. an intermediate connection section; 201. positioning a groove; 202. a groove; 203. mounting a through hole; 204. a chute; 205. an elastic pressure lever; 206. fixing grooves; 207. connecting grooves; 208. briquetting; 209. a first slide bar; 210. a first return spring; 211. a second slide bar; 212. a limiting block; 213. a partition plate; 214. a connecting seat; 215. a second return spring; 300. a drill bit tail; 301. positioning a rod; 302. a connecting seat.

Detailed Description

As shown in fig. 1, 2 and 3, a splicing type drill bit comprises a drill bit body and a mounting mechanism, the drill bit body is divided into a drill bit tail 300, a middle connecting section 200 and a drill handle 100, a connecting seat 302 is mounted on the drill bit tail 300, an external thread is arranged on the outer wall of the connecting seat 302, a positioning rod 301 is movably mounted on the drill bit tail 300, the positioning rod 301 is positioned on two sides of the connecting seat 302, a positioning groove 201 corresponding to the positioning rod 301 is arranged on one side of the middle connecting section 200, the mounting mechanism is positioned in the middle connecting section 200, the mounting mechanism comprises a first sliding rod 209, an elastic pressing rod 205 and a pressing block 208, a mounting through hole 203 is arranged on the middle connecting section 200, a groove 202 is arranged on the middle connecting section 200, the groove 202 is divided into a fixing groove 206 and a connecting groove 207 through a partition plate 213, a section of internal thread is arranged in the connecting groove 207, a sliding groove 204 communicated with the fixing groove 206 is also arranged on the middle connecting section 200, a first sliding rod 209 and a second sliding rod 211 are mounted in the sliding groove 204, a first return spring 210 is installed between a first sliding rod 209 and a second sliding rod 211, a pressing block 208 is installed on the other side of the first sliding rod 209, the pressing block 208 is located in a pressing groove 101 when the drill is spliced, a connecting seat 214 and a limiting block 212 uniformly distributed around the connecting seat 214 are installed in a fixing groove 206, the connecting seat 214 and the limiting block 212 are connected through a second return spring 215, a plurality of elastic pressing rods 205 are installed on the other side of the second sliding rod 211, the other side of each elastic pressing rod 205 is installed on the limiting block 212, and the pressing groove 101 is formed in the drill handle 100. The drill shank 100 is provided with a mounting rod 103, and the mounting rod 103 is provided with an elastic lug 102.

Referring to fig. 1-3, the drill bit is divided into three parts, namely a drill handle 100, a middle connecting section 200 and a drill bit tail 300, which can be mutually disassembled and assembled, when the drill bit is used, the drill bit tail 300 is easy to break, at the moment, the whole drill bit needs to be replaced, the cost is high, the waste is serious, in order to ensure that the thread splicing is smoothly transited when the drill bit tail 300 is spliced, a positioning rod 301 is movably arranged on the drill bit tail 300, when the drill bit tail 300 is installed, the positioning rod 301 is positioned in a positioning groove 201 to ensure that the middle connecting section 200 and the drill bit tail 300 are horizontally aligned and installed, if the drill bit tail 300 is broken in the using process, only the drill bit tail needs to be replaced, and the cost is reduced; the drill bit tail part 300 and the middle connecting section 200 are fixed through the limiting block 212, when the drill handle 100 is installed, the pressing groove 101 presses the pressing block 208 into the deep position of the sliding groove 204, the elastic pressing rod 205 with certain elasticity pushes the limiting block 212 into the fixing groove 206, the limiting block 212 is far away from the connecting seat 214, the partition plate 213 is movably installed in the groove 202, the connecting seat 302 is conveniently pressed, the threaded connection part is prevented from loosening, and the structure is more compact; the drill handle 100 is arranged on the middle connecting section 200 through the mounting rod 103, the mounting rod 103 and the elastic lug 102 move along the horizontal end of the mounting through hole 203 due to certain elasticity of the elastic lug 102, and when the elastic lug 102 moves to the vertical end of the mounting through hole 203, the elastic lug 102 resets to clamp the vertical end of the mounting through hole 203, so that the drill handle 100 and the middle connecting section 200 cannot be separated, the compact structure of the drill bit is ensured, and the drill bit is clamped at the joint of the drill handle 100 and the middle connecting section 200 through a clamp during use to further ensure the stability of the drill bit.

The utility model discloses theory of operation during the use: aligning the positioning rod 301 to the positioning groove 201, then screwing the tail part 300 of the drill bit, pushing the mounting rod 103 on the drill handle 100 along the horizontal end of the mounting through hole 203, at the moment, the elastic bump 102 is in a pressed state, when the elastic bump 102 moves to the vertical end of the mounting through hole 203, the elastic bump 102 resets to clamp the vertical end of the mounting through hole 203, at the moment, the pressing groove 101 presses the pressing block 208, the pressing block 208 is pressed to the deep part of the sliding groove 204, the first sliding rod 209 presses the first return spring 210 and the second sliding rod 211, the elastic pressing rod 205 pushes the limiting block 212 into the fixing groove 206, the elastic pressing rod 205 has an arc, so that the limiting block 212 is far away from the connecting seat 214, at the moment, the partition plate 213 presses the connecting seat 302 to prevent loosening, and the drill bit has a compact structure; if the drill bit needs to be disassembled, an external tool is used for stretching into the vertical end of the installation through hole 203 to press the elastic lug 102 to be flush with the horizontal end, the drill handle 100 is pulled out, the first return spring 210 is used for pressing block 208 to reset at the moment, the second return spring 215 is used for limiting block 212 to reset, then the tail portion 300 of the drill bit is screwed down, and the drill bit can be disassembled conveniently.

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. The utility model provides a concatenation formula drill bit, includes drill bit body and installation mechanism, and the drill bit body divide into drill bit afterbody (300), intermediate junction section (200) and drill handle (100), its characterized in that, install connecting seat (302) on drill bit afterbody (300), and connecting seat (302) outer wall is equipped with the external screw thread, and installation mechanism is located intermediate junction section (200), and installation mechanism includes first slide bar (209), elasticity depression bar (205) and briquetting (208), be equipped with recess (202) on intermediate junction section (200), recess (202) divide into fixed slot (206) and spread groove (207) through baffle (213), are equipped with one section internal thread in spread groove (207), still are equipped with on intermediate junction section (200) with communicating spout (204) of fixed slot (206), install first slide bar (209) and second slide bar (211) in spout (204), install return spring (210) between first slide bar (209) and the second slide bar (211), the drill handle is characterized in that a connecting seat (214) and limiting blocks (212) uniformly distributed on the periphery of the connecting seat (214) are installed in the fixing groove (206), the connecting seat (214) and the limiting blocks (212) are connected through a second return spring (215), and a pressure groove (101) is formed in the drill handle (100).

2. The spliced drill bit as claimed in claim 1, wherein the drill bit tail (300) is movably provided with a positioning rod (301), and the positioning rod (301) is positioned at two sides of the connecting seat (302).

3. The split-joint drill bit according to claim 1, characterized in that one side of the intermediate connecting section (200) is provided with a positioning groove (201) corresponding to the positioning rod (301).

4. The spliced drill bit as claimed in claim 1, wherein a pressing block (208) is mounted on the other side of the first sliding rod (209), and the pressing block (208) is positioned in the pressing groove (101) when the drill bit is spliced.

5. The spliced drill bit as claimed in claim 1, wherein a plurality of elastic pressing rods (205) are mounted on the other side of the second sliding rod (211), and the other side of the elastic pressing rods (205) is mounted on a limiting block (212).

6. The split-joint drill bit according to claim 1, characterized in that a mounting rod (103) is mounted on the drill shank (100), and a resilient projection (102) is provided on the mounting rod (103).

7. The split-joint drill bit according to claim 1, characterized in that the intermediate connecting section (200) is provided with mounting through holes (203).