CN214349680U - Special semi-fine boring cutter for bracket - Google Patents

Abstract

The utility model discloses a special semi-fine boring cutter of support relates to semi-fine boring cutter field, including cutter arbor and combination boring head cutter body, the cutter arbor is located the top of combination boring head cutter body, and one side of combination boring head cutter body is provided with first chamfer sword and heavy boring cutter respectively, and first chamfer sword all is provided with first screw with the surface of heavy boring cutter, and the opposite side of combination boring head cutter body is provided with semi-fine boring cutter and second chamfer sword respectively. The utility model discloses a set up cutter arbor and combination boring head cutter body, because cutter arbor and combination boring head cutter body adopt alloy tool steel material processing and thermal treatment to form, both assemble back weight and only be 0.38Kg, reach the purpose that the cutter lightweight guaranteed cutter intensity and stability again, install the whole cutter weight of BT30 handle of a knife and only be 1.08Kg, accord with and bore the quick automatic cutter weight condition of changing of center lathe, effectually avoided the boring cutter to take place to drop when automatic cutter changing.

Description

Special semi-fine boring cutter for bracket

Technical Field

The utility model relates to a half smart boring cutter field specifically is special half smart boring cutter of support.

Background

The boring cutter is one kind of boring cutter, and is one circular handle, square cutter rod for large workpiece, inner hole machining, reaming, copying, etc. the boring cutter has one or two cutting parts, and may be used in boring machine, lathe or milling machine.

The existing semi-precision boring cutter is processed in a machining mode, because the appearance of a part is large and irregular, the part is not suitable for designing a clamp on a numerical control lathe to process phi 84.5 +/-0.1 holes, a drilling and tapping center semi-boring hole mode is adopted for processing, the weight of the semi-precision boring cutter suitable for processing the holes on the market is far larger than the maximum bearing capacity of a tool of a drilling and tapping center tool magazine tool by 2.5Kg, the semi-precision boring cutter is easy to drop and damage when the tool is quickly and automatically exchanged, and therefore the commercially available semi-precision boring cutter cannot be used due to overweight, besides, the existing drilling and tapping center machine tool is low in self rigidity and is not suitable for high-speed feeding and milling, and the holes are milled and the total circumference is chamfered: 202+235 mm, calculated by feed rate 120mm per minute; when processing this hole: 437/120/3.6 minutes, slow processing cycle and low production efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems that the semi-fine boring cutter is easy to drop and damage and the processing beat is slow when the cutter is quickly and automatically exchanged, the semi-fine boring cutter special for the support is provided.

In order to achieve the above object, the utility model provides a following technical scheme: the special semi-fine boring cutter for the support comprises a cutter bar and a combined boring head cutter body, wherein the cutter bar is located above the combined boring head cutter body, a first chamfering cutter and a rough boring cutter are respectively arranged on one side of the combined boring head cutter body, first screws are respectively arranged on the outer surfaces of the first chamfering cutter and the rough boring cutter, a semi-fine boring cutter and a second chamfering cutter are respectively arranged on the other side of the combined boring head cutter body, a positioning groove is formed in the middle of the bottom of the combined boring head cutter body, second screws are arranged in the cutter bar, a positioning pin is arranged between the two second screws, a positioning reference surface is arranged on the outer surface of the cutter bar, and machining parts are sleeved on the outer surface of the boring head cutter body.

Preferably, the diameter of the positioning groove and the length of the positioning reference surface are both 19 mm.

Preferably, the cutter bar and the combined boring head cutter body are both made of alloy tool steel materials through processing and heat treatment.

Preferably, the first chamfering tool and the rough boring tool are both detachably arranged with the combined boring head cutter body through a first screw.

Preferably, the number of the second screws is two, and the two second screws are symmetrically arranged along the central line of the longitudinal axis of the positioning pin.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up cutter arbor and combination boring head cutter body, because cutter arbor and combination boring head cutter body adopt alloy tool steel material processing and thermal treatment to form, both assemble back weight only 0.38Kg, reach the purpose that the cutter lightweight guaranteed cutter intensity and stability again, install BT30 handle of a knife whole cutter weight only 1.08Kg, accord with the quick automatic tool weight condition of changing of brill and attack central machine tool, the effectual boring cutter that has avoided takes place to drop when the automatic tool that changes;

2. the utility model discloses a set up first chamfer sword, thick boring cutter, second chamfer sword and half smart boring cutter, the special cutter processing of current use half smart boring only needs the bore hole 35mm degree of depth just can accomplish bore hole and chamfer, calculates according to bore hole per minute's feed volume 80 mm: 35 ÷ 80 ≈ 0.45 minutes, the production efficiency (3.6 ÷ 0.45 ═ 8) is improved by 8 times than the original one, 100 shift production can be increased every day, the production value is increased by at least 40 ten thousand every year according to the part selling price of 20 yuan/piece, the production efficiency is accelerated, the enterprise benefit is greatly improved, when the rough boring blade is worn, the rough boring blade can be replaced to the installation position of the first chamfering cutter, the semi-fine boring cutter is replaced to the installation position of the rough boring cutter, the second chamfering cutter is replaced to the position of the semi-fine boring cutter, a cycle period is formed, the rough boring blade is recycled until each knife point or cutting edge of the blade is scrapped, about 100 blades can be saved every year, 100 × 20 yuan/piece is 2000 according to the calculation of 20 yuan/piece of a new blade, and the blade cost can be saved by 2000 yuan every year.

Drawings

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

fig. 2 is a schematic view of the explosion structure of the combined boring head and the cutter body of the utility model;

FIG. 3 is a schematic view of the cutter bar structure of the present invention;

fig. 4 is a schematic structural diagram of the semi-fine boring tool of the present invention during machining.

In the figure: 1. a cutter bar; 2. a first chamfering tool; 3. a first screw; 4. roughly boring a cutter; 5. combining the boring head cutter body; 6. semi-fine boring cutter; 7. a second chamfering tool; 8. a second screw; 9. positioning pins; 10. processing parts; 11. positioning a groove; 12. and positioning the reference surface.

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. 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.

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 the 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 the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "disposed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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. The following describes an embodiment of the present invention according to its overall structure.

Referring to fig. 1-4, the special semi-fine boring cutter for the bracket comprises a cutter bar 1, a first chamfer cutter 2, a first screw 3, a rough boring cutter 4, a combined boring head cutter body 5, a semi-fine boring cutter 6, a second chamfer cutter 7, a second screw 8, a positioning pin 9, a processing part 10, a positioning groove 11 and a positioning reference surface 12; the cutter bar 1 is located above the combined boring head cutter body 5, one side of the combined boring head cutter body 5 is provided with a first chamfering cutter 2 and a rough boring cutter 4 respectively, the outer surfaces of the first chamfering cutter 2 and the rough boring cutter 4 are provided with first screws 3, the other side of the combined boring head cutter body 5 is provided with a semi-fine boring cutter 6 and a second chamfering cutter 7 respectively, a positioning groove 11 is formed in the middle of the bottom of the combined boring head cutter body 5, a second screw 8 is arranged inside the cutter bar 1, a positioning pin 9 is arranged between the two second screws 8, the outer surface of the cutter bar 1 is provided with a positioning reference surface 12, the outer surface of the combined boring head cutter body 5 is sleeved with a machining part 10, and the combined boring head cutter body 5 is convenient to cut the machining part 10.

Please refer to fig. 1-4, the diameter of the positioning slot 11 and the length of the positioning reference surface 12 are both 19mm, which facilitates the separation and combination of the cutter bar 1 and the combined boring head cutter body 5, the cutter bar 1 and the combined boring head cutter body 5 are both made of alloy tool steel material and are formed by heat treatment, the weight of the assembled cutter bar 1 and the assembled combined boring head cutter body is only 0.38Kg, and the purposes of reducing the weight of the cutter and ensuring the strength and stability of the cutter are achieved.

Please refer to fig. 1, 2 and 4, the first chamfering tool 2 and the rough boring tool 4 are both detachably mounted to the combined boring head cutter body 5 through the first screws 3, so as to facilitate replacement of worn blades, the two second screws 8 are symmetrically mounted along the center line of the longitudinal axis of the positioning pin 9, and the two second screws 8 facilitate fixing of the cutter bar 1.

The working principle is as follows: firstly, a user is in transition fit with a positioning reference surface 12 of a combined boring head cutter body 5 through a positioning groove 11 of a cutter bar 1, the combined boring head cutter body 5 and a positioning reference surface 12 are pre-locked through a second screw 8 after being assembled, the radial and axial blade positions of the left side and the right side of the combined boring head cutter body 5 are designed in an asymmetric size, then the user installs a first chamfering cutter 2, a rough boring cutter 4, a semi-fine boring cutter 6 and a second chamfering cutter 7 on two sides of the combined boring head cutter body 5 respectively, the first chamfering cutter 2 and the second chamfering cutter 7 are designed in an equal-height symmetric 90-degree structure, then the combined boring head cutter body 5 is placed in a machined part 10 to cut the machined part 10, and after the rough boring cutter 4 is worn, the rough boring cutter can be replaced to the installation position of the first chamfering cutter 2, the semi-fine boring cutter 6 is replaced to the installation position of the rough boring cutter 4, and the second chamfering cutter 7 is replaced to the position of the semi-fine boring cutter 6, so as to form a cycle period.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. The special semi-fine boring cutter for the support comprises a cutter bar (1) and a combined boring head cutter body (5), and is characterized in that: the cutter bar (1) is located above the combined boring head cutter body (5), a first chamfering cutter (2) and a rough boring cutter (4) are respectively arranged on one side of the combined boring head cutter body (5), first screws (3) are respectively arranged on the outer surfaces of the first chamfering cutter (2) and the rough boring cutter (4), a semi-fine boring cutter (6) and a second chamfering cutter (7) are respectively arranged on the other side of the combined boring head cutter body (5), a positioning groove (11) is formed in the middle of the bottom of the combined boring head cutter body (5), a second screw (8) is arranged inside the cutter bar (1), a positioning pin (9) is arranged between the two second screws (8), a positioning reference surface (12) is arranged on the outer surface of the cutter bar (1), and a machining part (10) is sleeved on the outer surface of the combined boring head cutter body (5).

2. The special semi-fine boring cutter for the bracket according to claim 1, wherein: the diameter of the positioning groove (11) and the length of the positioning reference surface (12) are both 19 mm.

3. The special semi-fine boring cutter for the bracket according to claim 1, wherein: the cutter bar (1) and the combined boring head cutter body (5) are both made of alloy tool steel materials through processing and heat treatment.

4. The special semi-fine boring cutter for the bracket according to claim 1, wherein: the first chamfering cutter (2) and the rough boring cutter (4) are both detachably arranged with the combined boring head cutter body (5) through a first screw (3).

5. The special semi-fine boring cutter for the bracket according to claim 1, wherein: the number of the second screws (8) is two, and the two second screws (8) are symmetrically arranged along the central line of the longitudinal axis of the positioning pin (9).

Images