CN217833996U

CN217833996U - Grinding drill structure with reusable drill handle part

Info

Publication number: CN217833996U
Application number: CN202122865570.5U
Authority: CN
Inventors: 刘磊
Original assignee: Jiangsu Leigong Tools Co ltd
Current assignee: Jiangsu Leigong Tools Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-11-18
Anticipated expiration: 2031-11-22

Abstract

The utility model relates to a drill bit instrument field specifically discloses a structure is bored to grind that drillstock portion repeatedly usable, including drill point, the brill body and drillstock, drill point one end fixed connection is in brill body one end, the brill body includes cutting edge and chip groove brill body one end is provided with the reference column, the reference column is square cylinder, the inscribed circle diameter of reference column is greater than brill body diameter, the fixed positioning seat that is provided with of drillstock one end, the positioning seat is the cylinder, the positioning seat side is equipped with the positioning seat screw thread, positioning seat one end center is equipped with square counter bore, square counter bore size and reference column adaptation, positioning seat screw thread threaded connection has the nut, nut one end fixedly connected with stopper, the stopper is the round platform, stopper one end center is equipped with the through-hole, the through-hole diameter is greater than brill body diameter and is less than reference column inscribed circle diameter, through set up the reference column on the drillstock, has realized the interchangeable brill body.

Description

Grinding drill structure with reusable drill handle part

Technical Field

The utility model relates to a drill bit instrument field especially relates to brill structure is bored to brill shank repeatedly usable's grinding.

Background

Nowadays, a drill bit becomes the most frequently used punching tool, most of the existing drill bit manufacturing processes are a grinding bit and a rolling drill, the service life of the grinding drill bit is longer than that of the rolling drill, but the production cost of the grinding drill bit is far higher than that of the rolling drill bit, so manufacturers use various schemes to reduce the use cost of the grinding drill, such as a replaceable drill point type grinding drill, a replaceable drill body edge type grinding drill and the like, but the damage of the drill bit is often caused by the looseness of a replacement part during the work of the drill bit.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a solve the technical problem who appears in the above-mentioned background art, if: the production cost of the grinding drill bit is high, so in order to reduce the use cost, manufacturers adopt the grinding drill with replaceable drill points and cutting edges, but the drill bit of the type is damaged because the replacement part is loosened during working.

The utility model discloses a solve above-mentioned technical problem, adopted following technical scheme:

structure is bored in grinding that drillstock portion repeatedly usable, including drill point, the brill body and drillstock, drill point one end fixed connection is in the brill body one end, be provided with cutting edge and chip groove on the brill body, it is provided with the reference column to bore body one end, the reference column is square cylinder, reference column inscribed circle diameter is greater than the brill body diameter, the fixed positioning seat that is provided with of drillstock one end, the positioning seat is the cylinder, the positioning seat side is equipped with the positioning seat screw thread, positioning seat one end center is equipped with square counter bore, square counter bore size and reference column adaptation, positioning seat screw thread threaded connection has the nut, nut one end fixedly connected with stopper, the stopper is the round platform, stopper one end center is equipped with the through-hole, through-hole diameter is greater than and bores body diameter and is less than reference column inscribed circle diameter.

Preferably, the length of the positioning column is consistent with that of the square counter bore.

Preferably, a rubber gasket is arranged at the bottom of the square counter bore.

Preferably, the length of the positioning seat is consistent with that of the nut.

Preferably, the number of the cutting edges on the drill body is not less than two.

Preferably, the height of the chip discharge groove on the drill body is not less than 0.5mm.

The utility model has the advantages that:

1. through the drill bit with the replaceable drill body, the drill handle can be repeatedly used, and the use cost is reduced.

2. The drill body is fixed in the positioning seat through the limiting block, so that the situation of looseness and separation cannot occur when the drill bit works.

3. The rubber gasket is prevented from being arranged at the bottom of the square counter bore, so that the positioning column is fixed in the square counter bore more firmly.

Drawings

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

FIG. 2 is a cross-sectional view of the drill shank and the locating socket;

FIG. 3 is a cross-sectional view of the nut and stop.

In the figure: 1. drilling a tip; 2. a drill body; 2-1, a blade zone; 2-2, a chip groove; 2-3, a positioning column; 3. a drill shank; 4. positioning seats; 4-1, positioning seat threads; 4-2, forming a square counter bore; 3. a drill shank; 4. positioning seats; 5. a nut; 6. a limiting block; 6-1, through holes; 7. a rubber gasket.

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.

In the description of the present invention, it is to be understood that relational terms such as first and second, and the like, may be used solely to distinguish one from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "fixedly connected" and "fixedly disposed" are used herein to describe the connection means including, but not limited to, "welded", "riveted", "glued" and "screwed". The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus

The terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing and simplifying the present invention, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, the grinding drill structure with the reusable drill shank part comprises a drill tip 1, a drill body 2 and a drill shank 3, wherein one end of the drill tip 1 is fixedly connected with one end of the drill body 2, a cutting edge 2-1 and a chip removal groove 2-2 are arranged on the drill body 2, the number of the cutting edge 2-1 on the drill body 2 is not less than two, the height of the chip removal groove 2-2 on the drill body 2 is not less than 0.5mm, one end of the drill body 2 is provided with a positioning column 2-3, the positioning column 2-3 is a square cylinder, the inscribed circle diameter of the positioning column 2-3 is larger than the diameter of the drill body 2, one end of the drill shank 3 is fixedly provided with a positioning seat 4, the positioning seat 4 is a cylinder, the side face of the positioning seat 4 is provided with a positioning seat thread 4-1, the center of one end of the positioning seat 4 is provided with a square counter bore 4-2, the bottom of the square counter bore 4-2 is provided with a rubber gasket 7, the size of the square counter bore 4-2-3 is matched with the positioning column, the length of the positioning seat 2-3 is consistent with the square counter bore 4-2, the screw thread 4-1 is in threaded connection with a nut 5, the length of the positioning seat 4 is consistent with the length of the stopper 4-5, one end of the stopper 6, the stopper 6 is fixedly connected with the stopper 6, the nut 6 in the circular through hole 6, and the diameter of the stopper 1-6 is smaller than the diameter of the through hole of the drill body 2-2.

During actual operation, the stability of the drill bit in use can be guaranteed due to the multiple cutting edges on the drill body, drilled sawdust and scrap iron are discharged from the chip groove, and if the height of the chip groove is not enough, large chippings can be clamped in the chip groove, so that the drilling is difficult.

When the drill bit needs to be replaced, the screw cap 5 is screwed down from the positioning seat 4, the drill body (2) is taken down, then the positioning column 2-3 of the new drill body (2) is placed into the square counter bore 4-2 of the positioning seat 4, the screw cap 5 is screwed, and the positioning column 2-3 can be clamped in the square counter bore by the limiting block 6.

Claims

1. The grinding drill structure with the drill handle part capable of being reused comprises a drill point (1), a drill body (2) and a drill handle (3), one end of the drill point (1) is fixedly connected with one end of the drill body (2), the drill body (2) is provided with a cutting edge (2-1) and a chip groove (2-2), it is characterized in that one end of the drill body (2) is provided with a positioning column (2-3), the positioning column (2-3) is a square column body, the diameter of an inscribed circle of the positioning column (2-3) is larger than that of the drill body (2), one end of the drill handle (3) is fixedly provided with a positioning seat (4), the positioning seat (4) is a cylinder, the side surface of the positioning seat (4) is provided with a positioning seat thread (4-1), a square counter bore (4-2) is arranged in the center of one end of the positioning seat (4), the size of the square counter bore (4-2) is matched with that of the positioning column (2-3), the positioning seat thread (4-1) is in threaded connection with a nut (5), one end of the screw cap (5) is fixedly connected with a limiting block (6), the limiting block (6) is a round table, a through hole (6-1) is formed in the center of one end of the limiting block (6), the diameter of the through hole (6-1) is larger than that of the drill body (2) and smaller than that of an inscribed circle of the positioning column (2-3).

2. The abrasive drilling structure with a reusable drill shank part according to claim 1, characterized in that the positioning column (2-3) has a length corresponding to that of the square counter bore (4-2).

3. The abrasive drilling structure with the reusable drill handle part according to claim 1, characterized in that the bottom of the square counter bore (4-2) is provided with a rubber gasket (7).

4. The abrasive drilling structure with reusable drill shank according to claim 1, characterized in that the length of the positioning socket (4) is identical to the length of the nut (5).

5. The abrasive drilling structure with a reusable drill shank according to claim 1, characterized in that the number of the lands (2-1) on the drill body (2) is not less than two.

6. The abrasive drilling structure with a reusable drill shank according to claim 1, characterized in that the height of the flutes (2-2) on the drill body (2) is not less than 0.5mm.