CN217492936U

CN217492936U - Stepped ball head spiral reamer

Info

Publication number: CN217492936U
Application number: CN202221234046.6U
Authority: CN
Inventors: 陈勤忠; 陈晓雷; 袁辰
Original assignee: Changshu Kaide Cnc Tool Co ltd
Current assignee: Changshu Kaide Cnc Tool Co ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-09-27
Anticipated expiration: 2032-05-23

Abstract

The utility model relates to a stairstepping bulb spiral reamer, including handle of a knife, sword neck and cutter body, the cutter body includes a plurality of spiral cutting edges, is equipped with the chip groove between a plurality of spiral cutting edges, and a plurality of spiral cutting edges include first cutting portion, second cutting portion and third cutting portion, and the side outlet hole has been seted up in a plurality of spiral cutting edge outsides, and first cutting portion terminal surface is half spherical, and third cutting portion lower extreme is equipped with the inverted cone portion. The utility model has the advantages that: the spiral cutting edges and the chip grooves are adopted to effectively guarantee that cutting is rapidly carried out, the inner wall of the inner step of the hole can be machined at one time by the first cutting part, the second cutting part and the third cutting part which are arranged in a stepped mode, the smoothness requirement of the inner wall is guaranteed through a spiral groove structure, meanwhile, the requirement of machining of the ball head surface at the bottom of the blind hole is met through the arc design of the head of the first cutting part, machining precision is guaranteed through one-step forming, the production requirement is met, the process flow is simplified, and production efficiency is improved.

Description

Stepped ball head spiral reamer

Technical Field

The utility model relates to a machine tooling cutter field, concretely relates to is a stairstepping bulb spiral reamer.

Background

The reamer is used for reaming drilled or reamed holes on a workpiece, mainly aims at improving the processing precision of the holes and reducing the roughness of the surface of the holes, is a tool for finish machining and semi-finish machining of the holes, has small processing allowance, and can be divided into a straight groove and a spiral groove according to the shape of a tooth socket;

when a special-shaped finish hole is machined, a non-standard reamer needs to be customized to meet production requirements, and for a stepped hole with a ball head at the bottom of a blind hole, the conventional reamer can only ensure the smooth finish of the inner wall of the stepped hole and cannot ensure the smooth finish of the bottom arc surface at the same time, so that the production efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: provides a stepped ball head spiral reamer to solve the problems in the prior art.

In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a stairstepping bulb spiral reamer, includes handle of a knife, sword neck and cutter body, the cutter body includes a plurality of spiral cutting edges, and is a plurality of be equipped with the chip groove between the spiral cutting edge, it is a plurality of spiral cutting edge includes first cutting portion, second cutting portion and third cutting portion, and is a plurality of the side outlet hole has been seted up in the spiral cutting edge outside, first cutting portion terminal surface is half spherical, third cutting portion lower extreme is equipped with the obround portion.

Preferably, the tool shank, the tool neck and the interior of the tool body are provided with a central cold hole along the central axis, and the central cold hole is communicated with the plurality of side water outlet holes.

Preferably, the first cutting portion, the second cutting portion and the third cutting portion are arranged in a stepped shape, the diameter of the first cutting portion is smaller than that of the second cutting portion, and the diameter of the second cutting portion is smaller than that of the third cutting portion.

Preferably, the plurality of flutes have the same rotational center, and the flutes pass through the first cutting portion, the second cutting portion, and the third cutting portion.

Preferably, the spiral cutting edges are five in number, and the connection part of the lower ends of the spiral cutting edges and the cutter neck is in circular arc transition.

The beneficial effects of the utility model are that: the utility model provides a stairstepping bulb spiral reamer, adopts a plurality of spiral cutting edges, the chip groove effectively guarantees that the cutting is discharged fast, the first cutting portion of stairstepping range, the downthehole step inner wall of second cutting portion and third cutting portion disposable processing, guarantee the smooth finish requirement of inner wall through the helicla flute structure, the requirement of blind hole bottom bulb face processing has also been satisfied in first cutting portion head circular arc design simultaneously, one shot forming guarantees the machining precision, both satisfied production demand has simplified process flow again, the improvement production efficiency.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of the overall structure of the present invention;

fig. 3 is a top view of the overall structure of the present invention.

In the figure: 1-a tool handle, 2-a tool neck, 3-a tool body, 4-a spiral cutting edge, 5-a chip groove, 6-a first cutting part, 7-a second cutting part, 8-a third cutting part, 9-a side water outlet hole, 10-a semi-spherical surface, 11-an inverted cone part and 12-a central cold hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1-3, a stairstepping bulb spiral reamer, including handle of a knife 1, sword neck 2 and cutter body 3, cutter body 3 includes a plurality of spiral cutting edge 4, the reamer can be avoided in the multiple-blade design and blocks, prevent that the sword tooth from bursting apart, be equipped with chip groove 5 between a plurality of spiral cutting edge 4, the helicla flute structure is applicable to the blind hole processing, the cutting is stable, vibrate for a short time, a plurality of spiral cutting edge 4 include first cutting portion 6, second cutting portion 7 and third cutting portion 8, the step cutting edge, be used for processing the step hole, side outlet hole 9 has been seted up in a plurality of spiral cutting edge 4 outsides, be used for the coolant liquid to flow out, guarantee that the chip removal is unobstructed, first cutting portion 6 terminal surface is half spherical 10, be used for processing root blind hole sphere, 8 lower extremes of third cutting portion are equipped with the pyramis 11 of falling, avoid cutter body and pore wall to take place the scraping.

The interior portion of handle of a knife 1, sword neck 2 and cutter body 3 has offered central cold hole 12 along its central axis, and cold hole 12 communicates with each other with a plurality of side outlet 9 in the center for the coolant liquid flows out, effectively reduces the cutter temperature.

The first cutting part 6, the second cutting part 7 and the third cutting part 8 are arranged in a stepped mode, the diameter of the first cutting part 6 is smaller than that of the second cutting part 7, the diameter of the second cutting part 7 is smaller than that of the third cutting part 8, and the cutting tool is suitable for machining step fine holes.

The plurality of chip flutes 5 have the same rotational center, and the chip flutes 5 penetrate the first cutting portion 6, the second cutting portion 7, and the third cutting portion 8, and accommodate cutting and discharge cutting clearance.

The number of the spiral cutting edges 4 is five, and the joints of the lower ends of the spiral cutting edges 4 and the cutter neck 2 are in arc transition, so that the space for chip removal outflow is favorable for cutting and quick discharge.

When the stepped ball head spiral reamer is used for machining a stepped hole with a bottom circular arc spherical surface, the hole is firstly reamed at a machining position, then the first cutting part 6 of the cutter is aligned to the position of the hole in the forward direction, the cutter slowly extends into the hole for further reaming, cutting cooling liquid flows out from a central cold hole 12 through a plurality of side water outlet holes 9 during reaming, the cutter blade is cooled and washed for chip removal, three-section stepped spiral cutting edges 4 can perform one-step machining forming on the high-precision stepped hole, the spherical surface of the inner root of the hole can be machined, and the smooth finish of the inner wall of the stepped surface can be ensured.

The above examples are provided for further illustration of the present invention, but do not limit the present invention to these specific embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be understood as being within the protection scope of the present invention.

Claims

1. The utility model provides a stairstepping bulb spiral reamer, includes handle of a knife (1), sword neck (2) and cutter body (3), its characterized in that: cutter body (3) are including a plurality of spiral cutting edge (4), and are a plurality of be equipped with chip groove (5) between spiral cutting edge (4), it is a plurality of spiral cutting edge (4) are including first cutting portion (6), second cutting portion (7) and third cutting portion (8), and are a plurality of side outlet hole (9) have been seted up in spiral cutting edge (4) outside, first cutting portion (6) terminal surface is half spherical surface (10), third cutting portion (8) lower extreme is equipped with obround portion (11).

2. The stepped ball helical reamer of claim 1, wherein: the utility model discloses a cutter handle, the sword neck (2) and cutter body (3) are inside to be seted up central cold hole (12) along its central axis, central cold hole (12) communicate with each other with a plurality of side water outlet (9).

3. The stepped ball helical reamer of claim 1, wherein: the first cutting part (6), the second cutting part (7) and the third cutting part (8) are arranged in a stepped mode, the diameter of the first cutting part (6) is smaller than that of the second cutting part (7), and the diameter of the second cutting part (7) is smaller than that of the third cutting part (8).

4. The stepped ball helical reamer of claim 1, wherein: the plurality of chip flutes (5) have the same rotation center, and the chip flutes (5) penetrate through the first cutting portion (6), the second cutting portion (7) and the third cutting portion (8).

5. The stepped ball helical reamer of claim 1, wherein: the spiral cutting edges (4) are five in number, and the connection part of the lower ends of the spiral cutting edges (4) and the cutter neck (2) is in circular arc transition.