CN218903718U

CN218903718U - Straight flute-to-spiral flute stepped drill capable of being manually repaired

Info

Publication number: CN218903718U
Application number: CN202222803608.0U
Authority: CN
Inventors: 杨荣华; 李政憲
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2023-04-25
Anticipated expiration: 2032-10-24

Abstract

The utility model discloses a manually repairable straight flute rotary spiral flute ladder drill which comprises a drill handle main body and a drill bit main body which is constructed at one end of the drill handle main body, wherein the drill bit main body is of a conical structure, a plurality of steps with diameters decreasing in sequence are equidistantly formed between one end of the drill bit main body facing the drill handle main body and one end of the drill handle main body far away from the drill handle main body, the drill bit main body is divided into a first drilling section and a second drilling section, a plurality of steps at the first drilling section are provided with a plurality of spiral flute main bodies, a plurality of steps at the second drilling section are provided with a plurality of straight flute main bodies, one surface of each spiral flute main body is provided with an arc-shaped cutting edge, and one surface of each straight flute main body is provided with a straight line cutting edge. The straight flute rotary spiral flute stepped drill capable of being manually repaired can be matched with the drill of holes with different diameters through the collocation of different flute types, the occurrence of the blocking condition is reduced, the manual repair is convenient, and the production cost is reduced.

Description

Straight flute-to-spiral flute stepped drill capable of being manually repaired

Technical Field

The utility model belongs to the technical field of drill bits, and particularly relates to a manually repairable straight flute rotary spiral flute stepped drill.

Background

The step drill is also called a step drill or a pagoda drill, is mainly used for drilling and processing thin steel plates within 3mm, can replace a plurality of drill bits to be used, processes holes with different diameters according to requirements, can realize one-time processing of large holes, and does not need to replace drill bits, drill positioning holes and the like.

The prior ladder drill is provided with two spiral groove main bodies, the spiral groove main bodies have the advantage of high cutting speed, and can discharge waste scraps, and particularly, the ladder drill is particularly prominent in small-diameter drilling holes.

Can be when the diameter of drilling is greater than 18mm, the dead phenomenon of card easily appears in the drill bit, and continuous card is dead can lead to the ladder to bore the blade that is blocked the department step and damage, need polish, can't continue work in the short term to because the cell type of helicla flute main part is the heliciform, the user does not have professional equipment can't repair the department of damaging, only can eliminate the processing, has improved manufacturing cost by a wide margin.

Disclosure of Invention

The utility model aims to provide a manually repairable straight flute-to-spiral flute stepped drill, which solves the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a manually repairable straight flute rotary spiral flute ladder drill comprises a drill handle main body and a drill bit main body which is constructed at one end of the drill handle main body;

the drill bit body is of a conical structure, and a plurality of steps with diameters decreasing in sequence are formed between one end of the drill bit body facing the drill shank body and one end of the drill bit body far away from the drill shank body at equal intervals;

the drill bit body is divided into a first drilling section and a second drilling section, a plurality of spiral groove bodies are arranged on steps at the first drilling section, a plurality of straight groove bodies are arranged on steps at the second drilling section, an arc-shaped cutting edge is formed on one surface of each spiral groove body, and a plurality of straight cutting edges are formed on one surface of each straight groove body.

Preferably, the diameter of the steps in the first drilling section is greater than or equal to eighteen millimeters, and the diameter of the steps in the second drilling section is less than or equal to eighteen millimeters.

Preferably, a connecting rod is constructed at one end of the drill shank main body far away from the drill bit main body, and a limit groove is formed at one end of the outer edge surface of the connecting rod far away from the drill shank main body.

Preferably, the spiral groove main bodies are arranged in a spiral array, and the straight groove main bodies are arranged in a spiral array, and four of the straight groove main bodies are arranged in a spiral array.

The utility model has the technical effects and advantages that: this but manual repair formula straight flute changes helicla flute ladder and bores, benefitting by the setting of drill shank main part and drill bit main part, two helicla flute main parts that offer through second drilling section department on the drill bit main part carry out the brill of being less than or equal to eighteen millimeters and establish, four straight flute main parts that the first drilling section department of rethread on the drill bit main part set up can carry out the brill of being greater than or equal to eighteen millimeters, can reduce the dead condition emergence of card, and because the cell type of straight flute main part is convenient to polish, so can be because of the convenient restoration of polishing when the straight line cutting edge damages that leads to the card dead, manufacturing cost has been reduced.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic plan view of the present utility model;

fig. 3 is a left side view of the present utility model.

In the figure: 1. a drill shank body; 2. a bit body; 201. a first borehole section; 202. a second borehole section; 3. a spiral groove body; 4. a straight groove body; 5. a straight blade; 6. a connecting rod; 7. and a limit groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order to facilitate the polishing and repairing of the cutting edge when the drill bit is blocked, as shown in fig. 1 and 2, the manually repairable straight flute rotary spiral flute stepped drill comprises a drill shank main body 1 and a drill bit main body 2 constructed at one end of the drill shank main body 1, wherein the drill bit main body 2 is of a conical structure, a plurality of steps with diameters decreasing in sequence are equidistantly arranged between one end of the drill bit main body 2 facing the drill shank main body 1 and one end far away from the drill shank main body 1, the drill bit main body 2 is divided into a first drilling section 201 and a second drilling section 202, the diameters of a plurality of steps in the first drilling section 201 are more than or equal to eighteen millimeters, the diameters of a plurality of steps in the second drilling section 202 are less than or equal to eighteen millimeters, a plurality of steps at the first drilling section 201 are provided with a plurality of spiral flute main bodies 3, and a plurality of straight flute bodies 4 have been seted up on the step of second drilling section 202 department, and a plurality of the arc cutting edge is formed to the one side of spiral flute body 3, and a plurality of the straight flute body 4's one side forms sharp cutting edge 5, spiral flute body 3 is the spiral array and arranges and have been seted up two, and straight flute body 4 is the spiral array and has been seted up four, and two spiral flute bodies 3 that set up through second drilling section 202 department on the drill bit body 2 carry out the brill of less than or equal to eighteen millimeters and establish, and four straight flute bodies 4 that the first drilling section 201 department was seted up on the rethread drill bit body 2 can carry out the brill of more than or equal to eighteen millimeters and establish, can reduce the condition that the card is dead to take place, and because the groove type of straight flute body 4 conveniently polishes, so can conveniently polish when leading to sharp cutting edge 5 to damage because of the card is dead, reduced manufacturing cost.

In order to complete the fixed installation of the step drill, as shown in fig. 1, specifically, one end of the drill shank main body 1 far away from the drill bit main body 2 is provided with a connecting rod 6, one end of the outer edge surface of the connecting rod 6 far away from the drill shank main body 1 is provided with a limit groove 7, the limit groove 7 is inserted into a driving device, thus locking of the step drill is completed through a snap-in piece arranged in the driving device and the limit groove 7 provided on the connecting rod 6, the fixed installation of the step drill is completed,

working principle: this but manual repair formula straight flute changes helicla flute ladder bore, during the use, through inserting limit groove 7 in the actuating device, thereby accomplish the locking to this ladder bore through interlock spare that sets up in the actuating device and limit groove 7 that sets up on connecting rod 6, can drive this ladder bore through actuating device and rotate, two helicla flute main part 3 that set up through second drilling section 202 department on the drill bit main part 2, can carry out the brill of being less than or equal to the hole of eighteen millimeters, and four straight flute main part 4 that set up through first drilling section 201 department on the drill bit main part 2, can carry out the brill of being greater than or equal to the hole of eighteen millimeters, reduce the condition emergence of blocking through increasing the quantity that possesses the groove of chip removal and cutting function, and because the cell type of straight flute main part 4 is convenient to polish, so can be convenient to polish when leading to sharp cutting edge 5 to damage because of blocking, convenient to use.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model 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, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. A manually repairable straight flute rotary spiral flute ladder drill comprises a drill handle main body (1) and a drill bit main body (2) which is constructed at one end of the drill handle main body (1);

the method is characterized in that: the drill bit body (2) is of a conical structure, and a plurality of steps with diameters decreasing in sequence are formed between one end of the drill bit body (2) facing the drill shank body (1) and one end of the drill bit body (1) far away from the drill shank body at equal intervals;

the drill bit body (2) is divided into a first drilling section (201) and a second drilling section (202), a plurality of spiral groove bodies (3) are formed in steps at the first drilling section (201), a plurality of straight groove bodies (4) are formed in steps at the second drilling section (202), an arc-shaped cutting edge is formed on one surface of each spiral groove body (3), and a plurality of straight cutting edges (5) are formed on one surface of each straight groove body (4).

2. A manually repairable straight flute rotary helical flute step drill in accordance with claim 1, wherein: the diameter of a plurality of steps in the first drilling section (201) is more than or equal to eighteen millimeters, and the diameter of a plurality of steps in the second drilling section (202) is less than or equal to eighteen millimeters.

3. A manually repairable straight flute rotary helical flute step drill in accordance with claim 1, wherein: the drill shank is characterized in that a connecting rod (6) is constructed at one end, far away from the drill shank body (2), of the drill shank body (1), and a limit groove (7) is formed in one end, far away from the drill shank body (1), of the outer edge surface of the connecting rod (6).

4. A manually repairable straight flute rotary helical flute step drill in accordance with claim 1, wherein: the spiral groove main bodies (3) are arranged in a spiral array, and the straight groove main bodies (4) are arranged in a spiral array.