CN216176717U

CN216176717U - Inner-cooling forming cutter for machining inner hole of 50CrMo4 high-horsepower connector

Info

Publication number: CN216176717U
Application number: CN202122623097.XU
Authority: CN
Inventors: 张明敏; 严雪豹; 周雨
Original assignee: Suzhou Tima Precision Machinery Co ltd
Current assignee: Suzhou Tima Precision Machinery Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-05
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses an inner-cooling forming cutter for machining an inner hole of a 50CrMo4 high-horsepower connector, which comprises a cutting part and a handle part, wherein the foremost end of the cutting part is provided with a drill point, the tail end of the cutting part is provided with an orifice chamfer edge I, a hole inner chamfer edge II, a workpiece scraping plane, an arc R forming edge and an in-hole chamfer edge are arranged on the cutting part and positioned between the drill point and the orifice chamfer edge I, the hole inner chamfer edge II extends from two sides of the drill point, the workpiece scraping plane is arranged between the hole inner chamfer edge II and the arc R forming edge and is perpendicular to a horizontal central axis, the in-hole chamfer edge is arranged at the rear side of the workpiece scraping plane, a cutter back extends to the tail part of the cutting part from the arc R forming edge, and chip grooves are spirally arranged at two sides of the cutter back. Collect many functions in an organic whole such as drill way chamfer, downthehole circular arc R shaping, surface machining, drill way chamfer, will treat all machine-shaping sizes, drill way chamfer and the sword footpath of processing the work piece through a cutter and process together, improved the cutter processing beat, reduced the processing cost of instrument.

Description

Inner-cooling forming cutter for machining inner hole of 50CrMo4 high-horsepower connector

Technical Field

The utility model relates to the technical field of cutters, in particular to an inner-cooling forming cutter for machining an inner hole of a 50CrMo4 high-horsepower connector.

Background

50CrMo4 belongs to the alloy structural steel of superhigh strength, have higher intensity and toughness, the hardenability is also better, there is not obvious temper brittleness, 50CrMo4 has higher fatigue limit and multiple impact resistance after the thermal refining, the low temperature impact toughness is good, high creep strength and lasting strong at high temperature occasionally, therefore, the high horse power joint made of 50CrMo4 steel becomes a more common choice in industry and life, when the joint carries on the inner hole to process, at first, use the cutter to carry on the primary processing to the inner hole, after the inner hole processing, in order to guarantee the surface quality and roughness of the work piece, also need to change the cutter and carry on processes such as drill way chamfer, circular arc R shaping in the hole, surface machining, drill way chamfer, etc. separately, change the cutter every time and need carry on the tool setting, the tool changing tool setting takes longer time, and a plurality of cutters are used for the processing of a work piece, the machining efficiency is low, and the cost is high.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims to provide an inner cooling forming cutter for machining an inner hole of a 50CrMo4 high-horsepower connector.

The technical scheme is as follows: in order to achieve the purpose, the utility model provides an inner-cooling forming cutter for machining an inner hole of a 50CrMo4 high-horsepower connector, which comprises a cutting part and a handle part, wherein the foremost end of the cutting part is provided with a drill point, the tail end of the cutting part is provided with a first orifice chamfer edge, a second hole chamfer edge, a workpiece scraping plane, an arc R forming edge and a first hole chamfer edge are arranged on the cutting part and positioned between the drill point and the first orifice chamfer edge, the second hole chamfer edge extends from two sides of the drill point, the workpiece scraping plane is arranged between the second hole chamfer edge and the arc R forming edge and is perpendicular to a horizontal central axis, the inner-hole chamfer edge is arranged at the rear side of the workpiece scraping plane, a cutter back extends from the arc R forming edge to the tail part of the cutting part, and chip grooves are spirally arranged at two sides of the cutter back.

Further, the blade diameter of the blade part gradually increases from the drill point to the orifice chamfer edge.

Further, the angle of the drill tip is 140 °.

Further, the included angle formed by the second hole chamfer edge and the horizontal central axis is 30 degrees.

Further, the included angle formed by the hole inner chamfer edge and the horizontal central axis is 45 degrees.

Further, the first orifice chamfer edge forms an angle of 15 ° with the horizontal axis.

Furthermore, the cutting part and the handle part are provided with an inner cooling channel in a penetrating mode, and the chip groove is provided with an inner cooling hole communicated with the inner cooling channel.

Further, cutting part and stalk portion integrated into one piece, and coaxial design, the cutting part afterbody is equipped with transition connecting portion.

According to the technical scheme, the utility model has the beneficial effects that:

(1) the internal cooling forming cutter for machining the inner hole of the 50CrMo4 high-horsepower connector integrates the functions of orifice chamfering, forming of an inner circular arc R, surface machining, orifice chamfering and the like, and all machining forming sizes, orifice chamfering and blade diameters of a workpiece to be machined are machined together by one cutter, so that the machining beat of the cutter is improved, and the machining cost of the cutter is reduced.

(2) The utility model relates to an inner cooling device for processing an inner hole of a 50CrMo4 high-horsepower connector

The forming cutter is used for processing the surface of the workpiece, so that the roughness of the surface of the workpiece is ensured; the inner hole and the orifice of the workpiece can be chamfered, and the surface quality of the workpiece is ensured.

Drawings

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

FIG. 2 is a partial schematic view of the workpiece strike plane of the present invention.

Detailed Description

The utility model is further elucidated with reference to the drawings and the embodiments.

The inner-cooling forming cutter for processing the inner hole of the 50CrMo4 high-horsepower joint comprises a cutting part 1 and a handle part 2, wherein a drill point 11 is arranged at the foremost end of the cutting part 1, a first orifice chamfer edge 12 is arranged at the tail end of the cutting part 1, a second orifice chamfer edge 13, a workpiece scraping plane 14, an arc R forming edge 15 and an inner orifice chamfer edge 16 are arranged on the cutting part 1 and positioned between the drill point (11) and the first orifice chamfer edge 12, the second orifice chamfer edge 13 extends from two sides of the drill point 11, the workpiece scraping plane 14 is arranged between the second orifice chamfer edge 13 and the arc R forming edge 15 and is perpendicular to the horizontal central axis, the inner orifice chamfer edge 16 is arranged at the rear side of the workpiece scraping plane 14, a cutter back 17 extends from the arc R forming edge 15 to the tail part of the cutting part 1, and chip grooves 18 are spirally arranged at two sides of the cutter back 17.

Wherein, the blade diameter of the blade part 1 gradually increases from the drill point 11 to the orifice chamfer edge 12.

The angle of the drill tip 11 is 140 ° in this embodiment.

In this embodiment, the included angle between the second hole chamfer edge 13 and the horizontal central axis is 30 °.

In this embodiment, the angle formed by the hole chamfer 16 and the horizontal central axis is 45 °.

In this embodiment, the angle formed by the first orifice chamfer edge 12 and the horizontal axis is 15 °.

In this embodiment, the cutting portion 1 and the handle portion 2 are provided with an inner cooling channel 3 in a penetrating manner, and the chip groove 18 is provided with an inner cooling hole communicated with the inner cooling channel 3.

In this embodiment cutting part 1 and stalk portion 2 integrated into one piece, and coaxial design, cutting part 1 afterbody is equipped with transition connecting portion 19, the contained angle that transition connecting portion 19 and horizontal central axis become is 45.

The examples are given solely for the purpose of illustration and are not to be construed as limitations of the present invention, as various equivalents will occur to those skilled in the art upon reading the present invention and are intended to be within the scope of the utility model as defined in the claims appended hereto.

Claims

1. The utility model provides an interior cold-forming sword of processing 50CrMo4 high horse power joint hole which characterized in that: comprises a cutting part (1) and a handle part (2), wherein the foremost end of the cutting part (1) is provided with a drill point (11), the tail end of the cutting part (1) is provided with a first orifice chamfer edge (12), a second hole inner chamfer edge (13), a workpiece scraping plane (14), an arc R forming edge (15) and a hole inner chamfer edge (16) are arranged between the drill point (11) and the first hole chamfer edge (12) on the edge part (1), the second in-hole chamfer edge (13) extends from two sides of the drill point (11), the workpiece scraping plane (14) is arranged between the second in-hole chamfer edge (13) and the arc R forming edge (15), and is arranged vertically to the horizontal central axis, the hole internal chamfer edge (16) is arranged at the rear side of the workpiece scraping plane (14), the knife back (17) extends to the tail part of the blade part (1) from the arc R forming edge (15), and the chip grooves (18) are spirally arranged at two sides of the knife back (17).

2. The internally-cooled forming tool for machining the inner hole of the 50CrMo4 high-horsepower connector as claimed in claim 1, wherein: the blade diameter of the blade part (1) is gradually increased from the drill point (11) to the orifice chamfer edge I (12).

3. The internally-cooled forming tool for machining the inner hole of the 50CrMo4 high-horsepower connector as claimed in claim 1, wherein: the angle of the drill tip (11) is 140 degrees.

4. The internally-cooled forming tool for machining the inner hole of the 50CrMo4 high-horsepower connector as claimed in claim 1, wherein: and the included angle formed by the hole inner chamfer angle blade II (13) and the horizontal central axis is 30 degrees.

5. The internally-cooled forming tool for machining the inner hole of the 50CrMo4 high-horsepower connector as claimed in claim 1, wherein: the included angle formed by the hole inner chamfer angle blade (16) and the horizontal central axis is 45 degrees.

6. The internally-cooled forming tool for machining the inner hole of the 50CrMo4 high-horsepower connector as claimed in claim 1, wherein: the included angle formed by the orifice chamfer edge I (12) and the horizontal axis is 15 degrees.

7. The internally-cooled forming tool for machining the inner hole of the 50CrMo4 high-horsepower connector as claimed in claim 1, wherein: the cutting part (1) and the handle part (2) are provided with an inner cooling channel (3) in a penetrating mode, and an inner cooling hole communicated with the inner cooling channel (3) is formed in the chip groove (18).

8. The internally-cooled forming tool for machining the inner hole of the 50CrMo4 high-horsepower connector as claimed in claim 1, wherein: cutting part (1) and stalk portion (2) integrated into one piece, and coaxial design, cutting part (1) afterbody is equipped with transition connecting portion (19), the contained angle that transition connecting portion (19) and horizontal central axis become is 45.