CN217018649U

CN217018649U - Eccentric boring cutter for valve body

Info

Publication number: CN217018649U
Application number: CN202121574529.6U
Authority: CN
Inventors: 赵刚; 朱怀山; 华焱兰
Original assignee: Guangdong Hengbao Precision Technology Co ltd
Current assignee: Guangdong Hengbao Precision Technology Co ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2022-07-22
Anticipated expiration: 2031-07-12

Abstract

The utility model discloses a valve body eccentric boring cutter, which comprises a cutter bar, wherein the left side and the right side of the cutter bar are fixedly connected with cutting edges, and the front side and the rear side of the cutter bar are respectively provided with a chip removal spiral groove.

Description

Eccentric boring cutter for valve body

Technical Field

The utility model relates to a processing cutter, in particular to a valve body eccentric boring cutter.

Background

Boring, refers to the further processing of forged, cast or drilled holes. The boring hole can enlarge the aperture, improve the precision, reduce the surface roughness and better correct the deflection of the original hole axis. The boring can be divided into rough boring, semi-fine boring and fine boring. The size precision of the fine boring hole can reach IT 8-IT 7, the surface roughness Ra value is 1.6-0.8 μm, the boring hole is divided into a general boring hole and a deep hole boring hole, the general boring hole can be realized on a common lathe, and a boring cutter can be fixed on a lathe tailstock or a small tool rest. The utility model relates to a valve body eccentric boring tool, which is characterized in that a special deep hole drilling and boring machine is needed for deep hole boring, a boring bar is added to a boring cutter, and a hydraulic pump station is added to remove scrap iron by using cooling liquid.

Patent numbers: CN102574212B discloses a boring tool, which is designed to be lightweight and has wear resistance and high rigidity by being formed into the above-mentioned structure. This makes it possible to suppress deflection and vibration of the boring tool and perform high-precision machining.

However, the above patents also have the following disadvantages: 1. the designed eccentric hole is machined by using a standard boring cutter, but for a deep cavity hole with a large eccentric distance, the cutting edge of the common boring cutter cannot be machined in place due to too short extension, and the chip removal capability is poor.

Disclosure of Invention

The utility model mainly aims to provide a valve body eccentric boring cutter which can be used for well improving a deep cavity hole with a large eccentric distance, improving the chip removal capability to a certain extent and effectively solving the problems in the background technology.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides an eccentric boring cutter of valve body, includes the cutter arbor, the equal fixedly connected with cutting edge of the left and right sides of cutter arbor, the chip removal helicla flute is all installed to both sides around the cutter arbor.

Furthermore, the diameter of the cutter bar is between one third and one half of the diameter of the outer end of the cutting edge, and the cutter bar is smaller than the diameter of the cutting edge, so that the cutter enters a designated position of the deep cavity and then is fed to any side.

Further, the cutting edge is divided into four parts equally, and the cutting edge is divided into four parts and matched chip removal spiral grooves well.

Furthermore, the helix angle of the chip removal spiral groove is between 60 and 80 degrees, the cutting edge designed by the cutter is divided into four parts, and the helix angle is large, so that the tail chips in the machining process can be smoothly discharged along the chip removal spiral groove without blocking in a hole or being extruded to the top end to cause the upper surface to be extruded and damaged when the cutter is withdrawn.

Compared with the prior art, the utility model has the following beneficial effects: because the cutter arbor diameter ratio cutting edge diameter is little, make the cutter get into and feed to arbitrary one side behind the dark chamber assigned position, then the drilling down, thereby realize the dark spot facing work with upper hole decentraction, because the cutting edge of this cutter design divide into four parts, and the helix angle is great, so make the tail bits in the course of working can be discharged smoothly along the chip removal helicla flute and be unlikely to the jam downthehole or crowded top and lead to crowding the upper surface when moving back the sword, use this kind of special design's boring cutter, make the chip removal performance in the course of working good, make the position degree of machine-shaping eccentric orfice, the roughness precision of surface is higher, by above, can also carry out fine improvement to the great dark spot facing work of eccentric distance, the chip removal ability has also had certain improvement.

Drawings

FIG. 1 is a schematic view of the overall structure of an eccentric boring tool for valve bodies according to the present invention;

fig. 2 is a front view of the valve body eccentric boring tool of the utility model.

In the figure: 1. a knife handle; 2. a blade; 3. chip removal spiral groove.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

As shown in fig. 1-2, the eccentric boring cutter for the valve body comprises a cutter bar 1, wherein the left side and the right side of the cutter bar 1 are fixedly connected with cutting edges 2, and chip removal spiral grooves 3 are arranged on the front side and the rear side of the cutter bar 1.

The diameter of the cutter bar 1 is between one third and one half of the diameter of the outer end of the cutting edge 2, and the diameter of the cutter bar 1 is smaller than that of the cutting edge 2, so that the cutter enters a deep cavity designated position and then is fed to any side.

Wherein, the cutting edge 2 is divided into four parts equally, and the cutting edge 2 is divided into four parts and a matched chip removal spiral groove 3 which can be good.

The helix angle of the chip removal spiral groove 3 is 60 degrees to 80 degrees, the cutting edge 2 designed by the cutter is divided into four parts, and the helix angle is larger, so that tail chips in the machining process can be smoothly discharged along the chip removal spiral groove 3 without blocking in a hole or being extruded to the top end to cause extrusion damage to the upper surface during cutter withdrawal.

It should be noted that the utility model is a valve body eccentric boring cutter, because the diameter of the cutter bar 1 is smaller than that of the cutting edge 2, the cutter enters the designated position of the deep cavity and then feeds to any side, then drilling downwards to realize the processing of the deep cavity hole which is not concentric with the upper layer hole, because the cutting edge 2 designed by the cutter is divided into four parts and the helical angle is larger, therefore, the tail scraps in the processing process can be smoothly discharged along the scrap discharging spiral groove 3 without blocking in the hole or being extruded to the top end to cause the upper surface to be extruded and damaged when the cutter is withdrawn, and the special-designed boring cutter is used, the chip removal performance in the processing process is good, the position degree and the surface roughness precision of the processed and formed eccentric hole are higher, and the eccentric hole machining method has the advantages that, the deep cavity hole with larger eccentric distance can be well improved, and the chip removal capability is also improved to a certain extent.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an eccentric boring cutter of valve body, includes cutter arbor (1), its characterized in that, the equal fixedly connected with cutting edge (2) in both sides about cutter arbor (1), chip removal helicla flute (3) are all installed to both sides around cutter arbor (1).

2. The eccentric boring tool for the valve body as set forth in claim 1, wherein: the diameter of the cutter bar (1) is between one third and one half of the diameter of the outer end of the cutting edge (2).

3. The eccentric boring tool for the valve body as set forth in claim 1, wherein: the cutting edge (2) is divided into four parts in half.

4. The eccentric boring tool for the valve body as set forth in claim 1, wherein: the helix angle of the chip removal spiral groove (3) is 60 degrees to 80 degrees.