CN218873858U

CN218873858U - Four-edge hard alloy drill capable of improving hole machining quality

Info

Publication number: CN218873858U
Application number: CN202223179340.4U
Authority: CN
Inventors: 于阳; 徐丽华
Original assignee: Jiangsu Wanzhong Precision Tools Co ltd
Current assignee: Jiangsu Wanzhong Precision Tools Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-04-18
Anticipated expiration: 2032-11-29

Abstract

The utility model belongs to the technical field of the industrial cutter, concretely relates to can improve four sword carbide drills of spot facing work quality, this novel include: a drill rod, one end of which is provided with a drill bit; two main blades are spirally arranged along the peripheral axial direction of the drill rod from one end of the drill bit; two auxiliary blades are spirally arranged along the peripheral axial direction of the drill rod from one end of the drill bit and are arranged at intervals with the main blades; chip grooves are formed between the adjacent main blades and the adjacent auxiliary blades; the chip removal groove depth of the adjacent main blade rotating direction is larger than that of the adjacent auxiliary blade rotating direction, and the four-blade hard alloy drill capable of improving the hole machining quality timely discharges chips by arranging the two main blades, the two auxiliary blades and the chip removal grooves with different depths between the main blades and the auxiliary blades, so that the effects of preventing the chips from remaining and scratching the inner wall and improving the quality of the hole wall during machining are achieved.

Description

Four-edge hard alloy drill capable of improving hole machining quality

Technical Field

The utility model belongs to the technical field of the industrial cutter, concretely relates to can improve four sword carbide drills of spot facing work quality.

Background

Drilling is an indispensable process in machining today. The existing drilling bit has various varieties, and is required to be newly designed, changed and required quickly by facing numerous consumer groups, and the requirement change of consumers is kept up with, so that the problem is not small.

At present, when a traditional drill bit is used for machining a hole, cutting grooves are the same, the depth of the grooves is shallow, the main cutting grooves can not discharge chips timely easily when the cutting amount is large, the quality of the hole wall is poor, the quality of the machined hole wall is improved, and the technical problem to be solved by technical personnel at present is to improve the shape and position tolerance and the size tolerance of the hole.

Therefore, in order to solve the above problems, it is necessary to provide a four-edged cemented carbide drill capable of improving the quality of hole machining.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can improve four sword carbide drills of spot facing work quality to solve the technical problem who mentions in the background art.

In order to solve the technical problem, the utility model provides a can improve four sword carbide drills of spot facing work quality which includes:

a drill rod, one end of which is provided with a drill bit;

the two main blades are spirally arranged along the peripheral axial direction of the drill rod from one end of the drill bit;

the two auxiliary blades are spirally arranged along the peripheral axial direction of the drill rod from one end of the drill bit and are arranged at intervals with the main blades; and

chip grooves are formed between the adjacent main blades and the adjacent auxiliary blades; wherein

The chip removal groove in the rotating direction of the adjacent main blade is deeper than the chip removal groove in the rotating direction of the adjacent auxiliary blade.

Furthermore, a chip groove positioned at the front end of the main blade in the rotating cutting direction is a main groove, and the bottom of the chip groove is sunken towards the middle of the drill rod.

Furthermore, a chip groove positioned at the front end of the auxiliary blade in the rotating cutting direction is an auxiliary groove, and the front end of the groove bottom of the auxiliary groove, which is close to the main blade, is suitable for being protruded towards the periphery of the drill rod in an arc shape.

Furthermore, the drill bit is conical, and chamfers are arranged from the peripheral side of the drill bit to the main cutting edge and the auxiliary cutting edge.

Furthermore, the cutting end of each main blade and each auxiliary blade is provided with a blade zone; wherein

Each blade zone is arc-shaped and is in a common circle.

Further, the edge height difference between the adjacent main edge and the auxiliary edge is less than 0.01mm.

The utility model has the advantages that the utility model has the drill rod, and one end of the drill rod is provided with the drill bit; the two main blades are spirally arranged along the peripheral axial direction of the drill rod from one end of the drill bit; the two auxiliary blades are spirally arranged along the peripheral axial direction of the drill rod from one end of the drill bit and are arranged at intervals with the main blades; chip grooves are arranged between the adjacent main blades and the adjacent auxiliary blades; the chip groove depth of the adjacent main blade in the rotating direction is larger than that of the adjacent auxiliary blade in the rotating direction, so that chips are discharged in time, and the effects of preventing the chips from remaining and scratching the inner wall and improving the quality of the hole wall are achieved during processing.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a perspective view of a preferred embodiment of a drill rod of the present invention;

FIG. 2 is a cross-sectional view of a preferred embodiment of the drill rod of the present invention;

FIG. 3 is a side view of a preferred embodiment of the drill rod of the present invention;

fig. 4 is a partial enlarged view of a preferred embodiment of the blade of the present invention.

In the figure:

a drill rod 1;

blade 2, main blade 21, minor blade 22;

a chip groove 3, a main groove 31 and an auxiliary groove 32;

margin 4, edge height h.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the present embodiment provides a four-edged cemented carbide drill capable of improving the quality of hole machining, including: a drill rod 1, one end of which is provided with a drill bit; two main blades 21 which are spirally arranged along the peripheral axial direction of the drill rod 1 from one end of the drill bit; two auxiliary blades 22, which are spirally arranged along the peripheral axial direction of the drill rod 1 from one end of the drill bit and are arranged at intervals with the main blades 21; and a chip groove 3 is arranged between the adjacent main blade 21 and the auxiliary blade 22; the chip groove 3 in the rotating direction of the adjacent main blade 21 is deeper than the chip groove 3 in the rotating direction of the adjacent auxiliary blade 22, if the two main blades 21 and the two auxiliary blades 22 are not arranged, the number of the blades 2 is increased, the chip grooves 3 are inevitably increased, the chip grooves 3 are increased under the drill rod 1 with the same diameter, the hardness of the drill rod 1 is reduced, and the dangerousness of the tool during operation is greatly increased.

As shown in fig. 2, in the present embodiment, the chip discharge groove 3 located at the front end of the main edge 21 in the rotational cutting direction is a main groove 31, the groove bottom thereof is recessed toward the middle of the drill rod 1, and the main edge 21 is designed to be a circular arc shape as a main cutting edge, so that a large amount of chips can be discharged easily.

As shown in fig. 2, in the present embodiment, the chip discharge groove 3 located at the forward end of the secondary blade 22 in the rotational cutting direction is a secondary groove 32, the forward end of the groove bottom is adapted to protrude in an arc shape toward the outer periphery of the drill rod 1 near the main blade 21, the secondary blade 22 is a secondary cutting blade, and the chip is small, the centrifugal force is small, and the design of the arc protrusion is adopted, so that the effect of discharging a small amount of chips when the secondary blade performs the finishing and the shaping cutting of the cut hole is achieved.

As shown in fig. 3 and 4, in the present embodiment, the drill is tapered, and a chamfer is provided on the circumferential side of the drill to each of the main cutting edge 21 and the auxiliary cutting edge 22; the drill bit is designed in a conical and crossed manner so as to form a stable bevel without wasting the cutting edge 22 and the central part of the drill rod 11.

As shown in fig. 3, in the present embodiment, the cutting end of each of the major and

minor edges

21 and 22 is provided with a land 4; wherein each margin 4 is arc and the same circle, through the design of same circle shape to reach and prevent the effect that the margin 4 cutting output is different, guarantee the size precision of cutting the hole.

As shown in fig. 4, in the present embodiment, the edge height difference between the adjacent main edge 21 and the adjacent sub-edge 22 is less than 0.01mm, and the sub-edge 22 can perform secondary cutting on the hole wall by providing the edge height difference, thereby having a smoothing effect on the hole wall and improving the quality of the hole wall.

To sum up, the utility model arranges the drill rod, and one end of the drill rod is provided with the drill bit; two main blades are spirally arranged along the peripheral axial direction of the drill rod from one end of the drill bit; the two auxiliary blades are spirally arranged along the peripheral axial direction of the drill rod from one end of the drill bit and are arranged at intervals with the main blades; chip grooves are formed between the adjacent main blades and the adjacent auxiliary blades; the chip groove depth of the adjacent main blade in the rotating direction is larger than that of the adjacent auxiliary blade in the rotating direction, so that chips are discharged in time, the effects of preventing the chips from remaining and scratching the inner wall and improving the quality of the hole wall are achieved during processing, and the form and position tolerance and the size tolerance of the hole can be improved.

The components (components without specific structures) selected for use in the present application are all common standard components or components known to those skilled in the art, and the structures and principles thereof can be known to those skilled in the art through technical manuals or through routine experimental methods.

In the description of the embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the description, and must be determined according to the scope of the claims.

Claims

1. A four-edged hard metal drill capable of improving hole machining quality is characterized by comprising:

a drill rod, one end of which is provided with a drill bit;

two auxiliary blades are spirally arranged along the peripheral axial direction of the drill rod from one end of the drill bit and are arranged at intervals with the main blades; and

2. A four-edged cemented carbide drill with an improved hole-machining quality as set forth in claim 1,

the chip groove at the front end of the main blade in the rotating cutting direction is a main groove, and the bottom of the chip groove is sunken towards the middle of the drill rod.

3. A four-edged cemented carbide drill with an improved hole-machining quality as set forth in claim 1,

the chip groove at the front end of the auxiliary blade in the rotating cutting direction is an auxiliary groove, and the front end of the groove bottom, close to the main blade, is suitable for protruding towards the periphery of the drill rod in an arc shape.

4. A four-edged cemented carbide drill with an improved hole-machining quality as set forth in claim 1,

the drill bit is conical, and chamfers are arranged from the peripheral side of the drill bit to the main edges and the auxiliary edges.

5. A four-edged cemented carbide drill with an improved hole-machining quality as set forth in claim 1,

the cutting end of each main blade and each auxiliary blade is provided with a blade zone; wherein

Each blade zone is arc-shaped and is in a common circle.

6. A four-edged carbide drill capable of improving the quality of hole-making as set forth in claim 1,

the edge height difference between the adjacent main edge and the auxiliary edge is less than 0.01mm.