Wear-resistant drill bit for metal drilling

Abstract

The utility model discloses a wear-resistant drill bit for metal drilling, which comprises a drill bit body and a positioning buffer seat head, the drill bit body is mounted and connected at the middle position of the upper end of the positioning buffer seat head, a buffer connecting end post is arranged on the inner side of the lower end of the positioning buffer seat head, a bottom end seat is arranged at the lower end of the buffer connecting end post, and the bottom end seat is connected with the positioning buffer seat head. A bottom key rod is arranged at the lower end of the bottom end seat, a key rod key groove is formed in the outer wall of the lower end of the bottom key rod, and the positioning buffer seat head can effectively and elastically buffer through a buffer connecting end column at the lower end, so that impact force can be effectively buffered during drilling, and excessive friction damage caused by hard contact is avoided; therefore, a good elastic buffering and protecting effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wear -resisting drill bit technical field, concretely relates to a wear -resisting drill bit for metal drilling. BACKGROUND

[0002] Drill bit is a kind of tool with cutting ability at head end, mainly used to drill out through hole or blind hole on solid material, drill bit is usually made of carbon steel SK, high-speed steel SKH2, SKH3 and the like material, after milling or rolling, quenching and tempering heat treatment.

[0003] The existing Chinese patent CN217799172U discloses a wear-resistant coating drill bit on November 15, 2022, which comprises a drill bit body and a connecting piece; the drill bit body comprises a bonding layer, a wear-resistant layer, a wear-reducing layer and a diamond coating, and the bonding layer, the wear-resistant layer, the wear-reducing layer and the diamond coating are arranged in order from inside to outside, the inside of the bonding layer is provided with a second reinforcing rod, the top end of the second reinforcing rod is fixedly connected with a first reinforcing rod, the circumferential surface of the second reinforcing rod is fixedly connected with a third reinforcing rod, and the first reinforcing rod and the third reinforcing rod are located inside the bonding layer, the wear-resistant layer, the wear-reducing layer and the diamond coating; the inside of the first reinforcing rod, the second reinforcing rod and the third reinforcing rod is provided with a heat conduction cavity.

[0004] However, the above-mentioned wear-resistant coating drill bit improves the overall wear resistance by the wear-resistant coating on the circumference when in use, and lacks a corresponding buffer structure, so it cannot effectively improve the wear resistance through the structure. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a wear-resistant drill bit for metal drilling to solve the problem that the above-mentioned wear-resistant coating drill bit lacks a corresponding buffer structure when in use, so it cannot effectively improve the wear resistance through the structure.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a wear-resistant drill bit for metal drilling, comprising a drill bit head body and a positioning buffer seat head, the drill bit head body is installed and connected on the upper end middle position of the positioning buffer seat head, the lower end inside of the positioning buffer seat head is provided with a buffer connecting end column, the lower end of the buffer connecting end column is provided with a bottom end seat, the lower end of the bottom end seat is provided with a bottom key rod, the lower end outer wall of the bottom key rod is provided with a key rod key groove;

[0007] The buffer connecting end column comprises a connecting end disc, an intermediate sleeve column, an elastic buffer and a positioning disc, the inner side of the upper end of the positioning disc is provided with the elastic buffer, the lower end of the positioning disc is provided with the intermediate sleeve column, the lower end of the intermediate sleeve column is provided with the connecting end disc, the lower end of the connecting end disc is connected to the bottom end seat, and the intermediate sleeve column, the elastic buffer and the positioning disc are installed and connected to the positioning buffer seat head.

[0008] The drill head body comprises a head body disc, a drilling end head and a bottom end head, the lower end of the drilling end head is provided with the head body disc, the lower end of the head body disc is provided with the bottom end head in the middle, and the head body disc is installed and connected to the positioning buffer seat head through the bottom end head.

[0009] The positioning buffer seat head comprises a bottom sleeve groove, a buffer abutting end block, a buffer seat head shell and a head body installation groove, the upper end of the buffer seat head shell is provided with the head body installation groove in the inner side, the lower end of the buffer seat head shell is provided with the bottom sleeve groove in the inner side, the inner side of the bottom sleeve groove is provided with the buffer abutting end block on the buffer seat head shell, and the lower end of the buffer seat head shell is installed and connected to the buffer connecting end column through the bottom sleeve groove.

[0010] The center of the drill head body, the positioning buffer seat head, the bottom end seat, the bottom key rod and the buffer connecting end column is on the same straight line.

[0011] The outer side of the drill head body, the positioning buffer seat head, the bottom end seat, the bottom key rod and the buffer connecting end column is sprayed with a wear-resistant coating.

[0012] The upper end of the buffer connecting end column is elastically limited in the inner side of the lower end of the positioning buffer seat head.

[0013] The drill head body is installed in the inner side of the upper end of the positioning buffer seat head in a heat expansion and cold shrink mode.

[0014] Therefore, the drill head body, the positioning buffer seat head, the bottom end seat, the bottom key rod and the buffer connecting end column are on the same straight line.

[0015] 1、The positioning buffer seat head can be effectively elastically buffered through the buffer connecting end column at the lower end, so that the impact force can be effectively buffered when drilling, thereby avoiding excessive friction damage caused by hard contact, and good elastic buffering protection effect is achieved.

[0016] 2. The utility model discloses a positioning buffer seat head structure is set up, makes the buffer connecting end post can correspond to the buffer and touch, the upper end inside of the buffer seat head shell of positioning buffer seat head is equipped with head body mounting groove, thereby the drill head body can correspond to the installation connection, the lower end inside of buffer seat head shell is equipped with bottom sleeve groove, makes the buffer connecting end post can correspond to the installation use, the inside of bottom sleeve groove is fixed with buffer stop end block on the buffer seat head shell, and the buffer stop end block can hard resistance and touch the buffer connecting end post, and the lower end of buffer seat head shell is installed and is connected on the buffer connecting end post through bottom sleeve groove, can correspond to the installation connection use. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic view of the utility model for metal drilling's wear -resisting drill bit;

[0018] Figure 2 It is a drill head body structure schematic view of the utility model for metal drilling's wear -resisting drill bit;

[0019] Figure 3 It is a buffer connecting end post structure schematic view of the utility model for metal drilling's wear -resisting drill bit;

[0020] Figure 4 It is a positioning buffer seat head structure schematic view of the utility model for metal drilling's wear -resisting drill bit.

[0021] In the drawing: 1, drill head body;11, head body disc;12, drilling end head;13, bottom end head;2, positioning buffer seat head;21, bottom sleeve groove;22, buffer stop end block;23, buffer seat head shell;24, head body mounting groove;3, bottom end seat;4, bottom key rod;41, key rod key groove;5, buffer connecting end post;51, connecting end disc;52, middle sleeve column;53, elastic buffer;54, positioning disc. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantage of the utility model embodiment clearer, the following will combine the drawings in the utility model embodiment, and the technical scheme in the utility model embodiment is clearly and completely described, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making the creative labor belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents the selected embodiment of the utility model.

[0023] Example one

[0024] Referring to Figure 1 , Figure 3 and Figure 4 , a wear-resistant drill bit for metal drilling, comprising a drill bit head 1 and a positioning buffer seat head 2, the drill bit head 1 is installed and connected in the middle position of the upper end of the positioning buffer seat head 2, and the positioning buffer seat head 2 can drive the drill bit head 1 to rotate when rotating, so that the drill bit head 1 can effectively drill when contacting the object, the lower end of the positioning buffer seat head 2 is internally provided with a buffer connecting end column 5, and the positioning buffer seat head 2 can effectively elastically buffer through the buffer connecting end column 5 at the lower end, so that the impact force can be effectively buffered when drilling, thereby avoiding excessive friction damage caused by hard contact, and good elastic buffer protection effect is achieved, the lower end of the buffer connecting end column 5 is fixedly connected with a bottom end seat 3, the lower end of the bottom end seat 3 is fixedly connected with a bottom key rod 4, the bottom end seat 3 can be connected with external drilling equipment through the bottom key rod 4 at the lower end, and a key rod key groove 41 is formed in the lower end outer wall of the bottom key rod 4, so that effective positioning can be achieved after installation.

[0025] The buffer connecting end column 5 comprises a connecting end disc 51, an intermediate sleeve column 52, an elastic buffer 53 and a positioning disc 54, the upper end inner side of the positioning disc 54 is provided with the elastic buffer 53, the lower end of the positioning disc 54 is provided with the intermediate sleeve column 52, the lower end of the intermediate sleeve column 52 is provided with the connecting end disc 51, the lower end of the connecting end disc 51 is connected to the bottom end seat 3, and the intermediate sleeve column 52, the elastic buffer 53 and the positioning disc 54 are installed and connected to the positioning buffer seat head 2.

[0026] In the utility model, the positioning buffer seat head 2 comprises a bottom sleeve groove 21, a buffer stop end block 22, a buffer seat head shell 23 and a head body installation groove 24, the upper end inner side of the buffer seat head shell 23 is provided with the head body installation groove 24, so that the drill bit head 1 can be correspondingly installed and connected, the lower end inner side of the buffer seat head shell 23 is provided with the bottom sleeve groove 21, so that the buffer connecting end column 5 can be correspondingly installed and used, the inner side of the bottom sleeve groove 21 is fixed with the buffer stop end block 22 on the buffer seat head shell 23, and the buffer stop end block 22 can rigidly abut against the buffer connecting end column 5, and the lower end of the buffer seat head shell 23 is installed and connected to the buffer connecting end column 5 through the bottom sleeve groove 21, so that it can be correspondingly installed and connected for use.

[0027] In the utility model, the centers of the drill bit head 1, the positioning buffer seat head 2, the bottom end seat 3, the bottom key rod 4 and the buffer connecting end column 5 are on the same straight line, so that it is more stable when rotating.

[0028] In the utility model, wear-resistant coating is sprayed and installed on the outer sides of the drill bit head 1, the positioning buffer seat head 2, the bottom end seat 3, the bottom key rod 4 and the buffer connecting end column 5, so that the overall wear resistance is effectively improved.

[0029] The upper end elastic limiting sleeve of the buffer connecting end column 5 is connected to the inner side of the lower end of the positioning buffer seat head 2, thereby playing an elastic buffering role.

[0030] Embodiment two

[0031] Reference Figure 1 and Figure 2 Compared with the first embodiment, the drill head body 1 comprises a head body disc 11, a drilling end head 12 and a bottom end head 13, the lower end of the drilling end head 12 is fixedly connected with the head body disc 11, the lower end of the head body disc 11 is fixedly connected with the bottom end head 13 in the middle, the head body disc 11 is fixedly installed on the positioning buffer seat head 2 through the bottom end head 13, thereby the head body disc 11 and the bottom end head 13 can be stably installed on the positioning buffer seat head 2 for placement, and the conical shape of the drilling end head 12 at the upper end of the head body disc 11 can make effective drilling during drilling.

[0032] In the utility model, the drill head body 1 is installed in the upper end inner side of the positioning buffer seat head 2 through the thermal expansion and cold shrink mode, thereby corresponding installation can be realized, and the installation is more stable and firm.

[0033] Working principle: when in use, the bottom end seat 3 can be connected with external drilling equipment through the bottom key rod 4 at the lower end, when installing, the key rod key groove 41 is arranged on the lower end outer wall of the bottom key rod 4, so that effective positioning can be realized after installation, thereby effective positioning can be realized during rotating drilling, and sliding during drilling is avoided, the positioning buffer seat head 2 can drive the drill head body 1 to rotate when rotating, thereby the drill head body 1 can effectively drill when contacting with an object, the positioning buffer seat head 2 can effectively elastically buffer through the buffer connecting end column 5 at the lower end, so that impact force can be effectively buffered during drilling, thereby excessive friction damage caused by hard contact is avoided, and the elastic buffering protection effect is good.

[0034] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

[0035] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to be used to limit the scope of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art to which this application belongs. The singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise.

Claims

1. A wear-resistant drill bit for metal drilling, comprising a drill bit head (1) and a positioning and buffering seat head (2), the drill bit head (1) is mounted and connected at the middle position of the upper end of the positioning and buffering seat head (2), characterized in that: The lower end of the positioning buffer seat head (2) is provided with a buffer connecting end column (5), the lower end of the buffer connecting end column (5) is provided with a bottom end seat (3), the lower end of the bottom end seat (3) is provided with a bottom key rod (4), and the lower end outer wall of the bottom key rod (4) is provided with a key rod key groove (41). The buffer connecting end column (5) comprises a connecting end disc (51), an intermediate sleeve column (52), an elastic buffer (53) and a positioning disc (54), the upper end inner side of the positioning disc (54) is provided with an elastic buffer (53), the lower end of the positioning disc (54) is provided with an intermediate sleeve column (52), the lower end of the intermediate sleeve column (52) is provided with a connecting end disc (51), the lower end of the connecting end disc (51) is connected to the bottom end seat (3), and the intermediate sleeve column (52), the elastic buffer (53) and the positioning disc (54) are installed and connected on the positioning buffer seat head (2).

2. A wear-resistant drill bit for drilling into metal according to claim 1, characterized in that: The drill head body (1) comprises a head body disc (11), a drilling end head (12) and a bottom end head (13), the lower end of the drilling end head (12) is provided with a head body disc (11), the lower end of the head body disc (11) is provided with a bottom end head (13), and the head body disc (11) is installed and connected on the positioning buffer seat head (2) through the bottom end head (13).

3. A wear-resistant drill bit for drilling into metal according to claim 1, characterized in that: The positioning buffer seat head (2) comprises a bottom sleeve groove (21), a buffer stop end block (22), a buffer seat head shell (23) and a head body installation groove (24), the upper end inner side of the buffer seat head shell (23) is provided with a head body installation groove (24), the lower end inner side of the buffer seat head shell (23) is provided with a bottom sleeve groove (21), the inner side of the bottom sleeve groove (21) is provided with a buffer stop end block (22) on the buffer seat head shell (23), and the lower end of the buffer seat head shell (23) is installed and connected on the buffer connecting end column (5) through the bottom sleeve groove (21).

4. A wear-resistant drill bit for drilling into metal according to claim 1, characterized in that: The centers of the drill head body (1), the positioning buffer seat head (2), the bottom end seat (3), the bottom key rod (4) and the buffer connecting end column (5) are on the same straight line.

5. A wear-resistant drill bit for drilling into metal according to claim 4, characterized in that: The outer sides of the drill head body (1), the positioning buffer seat head (2), the bottom end seat (3), the bottom key rod (4) and the buffer connecting end column (5) are sprayed with wear-resistant coatings.

6. A wear-resistant drill bit for drilling into metal according to claim 1, characterized in that: The upper end of the buffer connecting end column (5) is elastically limited and sleeved in the lower end inner side of the positioning buffer seat head (2).

7. A wear-resistant drill bit for drilling into metal according to claim 1, characterized in that: The drill head body (1) is installed in the upper end inner side of the positioning buffer seat head (2) by thermal expansion and cold contraction.

Images