CN113231693A

CN113231693A - Novel reamer

Info

Publication number: CN113231693A
Application number: CN202110603746.1A
Authority: CN
Inventors: 王嘉; 崔建华; 胡春萍; 刘晶; 刘文娟; 戚海波; 李振晓
Original assignee: Hebei Huabei Diesel Engine Co Ltd
Current assignee: Hebei Huabei Diesel Engine Co Ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-08-10

Abstract

The invention relates to a novel reamer, which comprises a cutter handle matched with a machine tool spindle for application, a tail flat arranged on the end face of one end of the cutter handle and used for clamping a cutter changing manipulator, and a reamer body arranged at the other end of the cutter handle, wherein the reamer body comprises a cutting edge and two guide blocks arranged on the side face of the reamer body, chip grooves are formed in the end part of the reamer body and one side of the cutting edge, a central water outlet hole is also formed in the reamer body, and a water outlet of the central water outlet hole is formed in the chip grooves. The invention avoids the phenomenon that the traditional reamer deflects along the bottom hole in the reaming procedure, the size precision and the roughness value of the reamed hole are better, and the two procedures of rough reaming and finish reaming for reaming can be combined into one procedure.

Description

Novel reamer

Technical Field

The invention relates to a novel reamer, and belongs to the technical field of part processing.

Background

When a reamer for a common machine is used for reaming, a twist drill is generally used firstly to machine a bottom hole, and then the reamer is used for carrying out two machining procedures of rough reaming and finish reaming of the hole. If the bottom hole is inclined, the reamer is also inclined along the direction of the bottom hole, and the processing quality of the part is affected. Generally used reamers are all multi-edge reamers, the multi-edge cutting efficiency is high, but in the super-finishing process, because the cutting edges are more, multiple cutting forces are generated, the processing vibration is inevitably influenced, and the instability of the multi-edge cutting is more prominent.

In addition, the machining resistance of multi-edge cutting is large, and the resistance can push the reamer to deviate from the machining route of the reamer, so that the reamed hole is deflected.

Disclosure of Invention

The invention aims to provide a novel reamer which has smaller dependence on the axial quality of a bottom hole, can offset the processing resistance, repairs the deflection of the bottom hole to a certain extent, and has better dimensional accuracy and roughness of the reamed hole.

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

the utility model provides a novel reamer, includes the handle of a knife of using with the cooperation of lathe main shaft, the one end of handle of a knife is provided with the tail flat that the centre gripping of tool changing manipulator was used, and the other end of handle of a knife is the reamer body, the partly undercut of this tip of the reamer forms the chip groove, the side of this tip of the reamer, the leftover side position evenly distributed who is located the chip groove have a cutting edge and two guide blocks, and adjacent chip groove of cutting edge, cutting edge and guide block are the protruding setting of rectangle, and the guide block highly is less than the cutting edge, this internal center apopore that runs through whole reamer body that still is equipped with of reamer, and the delivery port of center apopore sets up in the chip groove.

The technical scheme of the invention is further improved as follows: the top of cutting edge is provided with the cutting edge, and the cutting edge is certain angle slope setting, and the cutting edge is towards one side of chip pocket.

The technical scheme of the invention is further improved as follows: the outer circle radius of the guide block is 0.05-0.10mm smaller than the radius of the bottom hole of the hole to be processed, and the outer circle radius of the guide block is the distance from the circle center of the end part of the reamer body to the outermost end of the guide block.

The technical scheme of the invention is further improved as follows: the cutting edge is made of a hard alloy material with the hardness of 60-70HRC and is arranged on the side face of the reamer body in a welding mode.

The technical scheme of the invention is further improved as follows: the central water outlet is connected with a water spraying hole of the machine tool, and the water pressure of the water spraying hole is 2.8-3.2 MPa.

Due to the adoption of the technical scheme, the invention has the following technical effects:

the invention avoids the phenomenon that the traditional reamer deflects along the bottom hole in the reaming process, the size precision and the roughness value of the reamed hole are better, the two procedures of rough reaming and finish reaming for reaming can be combined into one procedure, and the machining cost is saved.

The guide block can firmly coincide the center of the reamer with the design center, and the phenomenon of deflection cannot occur; the polishing action of the guide block also results in a significant reduction in the roughness of the inner bore.

The central water outlet hole sprays cooling liquid with pressure to process and cool the processing part, so that the problems of too fast cutter abrasion, size deviation of the processing part and the like caused by lack of cutting and cooling are prevented; the cutting chips accumulated in the chip grooves can be flushed away in time, the cutting liquid pressure can be offset with the machining resistance, and the precision of the machined hole is improved.

The reamer has the advantages that the chip groove is formed in the tail of the reamer, the chip removal phenomenon in single processing can be avoided, the guide block abrasion caused by chip removal is avoided, and the roughness of a processed hole is reduced.

Drawings

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

FIG. 2 is a top view of the present invention;

FIG. 3 is a front view of the present invention;

wherein, 1, cutting edge, 2, guide block, 3, chip groove, 4, central apopore, 5, handle of a knife, 6, the tail is flat.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, wherein the described embodiments are only a part, and not all, of the embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A novel reamer, as shown in fig. 1-2: the tool changing device comprises a tool shank 5 matched with a machine tool spindle and a tail flat 6 arranged on one end face of the tool changing manipulator for clamping, wherein a reamer body is arranged at the other end of the tool shank 5. The reamer body is including setting up a cutting edge 1 and two guide blocks 2 on the reamer body side, cutting edge 1 and 2 equipartitions of guide block are in the reamer body circumference outside chip groove 3. The cutting edge 1 is made of a hard alloy material with the hardness of 60-70HRC, is arranged on the side surface of the reamer body in a welding mode and is responsible for processing a hole system; the excircle radius of the guide block 2 is 0.05-0.10mm smaller than the radius of the bottom hole of the hole to be processed, the guide block 2 is responsible for guiding, so that the processing deflection is prevented, and meanwhile, the guide block 2 also has a polishing effect, so that the roughness of the processed inner hole is obviously reduced. One side of tip, cutting edge 1 of reamer body is equipped with chip groove 3, can store the smear metal when processing at every turn, avoids single processing the chip removal phenomenon to appear and because the guide block wearing and tearing condition that the chip removal caused, reduces the roughness in processing hole. The reamer is characterized in that a central water outlet hole 4 is further formed in the reamer body, the central water outlet hole 4 is connected with a water spraying hole of a machine tool, a water outlet is formed in a chip groove 3, and water pressure capable of being sprayed is 2.8-3.2Mpa water or cooling liquid.

The novel reamer and the traditional reamer prepared by the invention are respectively adopted to carry out a reaming procedure of phi 10mm holes, 3 holes are respectively reamed, and the obtained parameter comparison results of the holes are as follows:

Claims

1. the utility model provides a novel reamer, includes handle of a knife (5) of using with the cooperation of lathe main shaft, the one end of handle of a knife (5) is provided with tail flat (6) that tool changing manipulator centre gripping was used, its characterized in that: the other end of handle of a knife (5) is the reamer body, the partly undercut of this tip of reamer forms chip groove (3), the side of this tip of reamer, the surplus side position department evenly distributed who is located chip groove (3) have a cutting edge (1) and two guide blocks (2), and cutting edge (1) adjacent chip groove (3), cutting edge (1) and guide block (2) are the protruding setting of rectangle, and highly be less than cutting edge (1) of guide block (2), this internal central apopore (4) that run through whole reamer body that still is equipped with of reamer, and the delivery port of central apopore (4) sets up in chip groove (3).

2. The novel reamer of claim 1 wherein: the top of cutting edge (1) is provided with the cutting edge, and the cutting edge is certain angle slope setting, and the cutting edge is towards one side of chip pocket (3).

3. The new reamer of claim 1 or 2 wherein: the excircle radius of the guide block (2) is 0.05-0.10mm smaller than the radius of the bottom hole of the hole to be processed.

4. The new reamer of claim 1 or 2 wherein: the cutting edge (1) is made of a hard alloy material with the hardness of 60-70HRC and is arranged on the side surface of the reamer body in a welding mode.

5. The novel reamer of claim 1 wherein: the central water outlet (4) is connected with a water spraying hole of the machine tool, and the water pressure of the water spraying hole is 2.8-3.2 MPa.