CN215199954U

CN215199954U - Conical rough reamer

Info

Publication number: CN215199954U
Application number: CN202121700353.4U
Authority: CN
Inventors: 戴少杰; 戴志伟; 恽建琴
Original assignee: Changzhou Zhiwei Tools Co ltd
Current assignee: Changzhou Zhiwei Tools Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2021-12-17
Anticipated expiration: 2031-07-23

Abstract

The utility model discloses a tapered rough reamer, which comprises a reamer handle and a reamer body, wherein the reamer handle is fixedly connected with the reamer body, the front three quarter sections of the reamer body are reaming sections, the reaming sections are tapered, a plurality of reaming teeth are arranged along the length direction of the reaming sections, each reaming tooth comprises a reamer blade and a blade base, the blade base is in a straight bar shape, and the blade base and the reamer body are integrally formed; the reamer blade is detachably connected with the blade base, the cutting surface of the reamer blade protrudes out of the blade base, the edge part of the reamer blade is arranged on the edge of the cutting surface, and a chamfer is arranged at the edge part; the utility model discloses thick reamer of toper is equipped with detachable reamer piece, convenient change, and the chip removal is smooth, and the reaming precision is very high.

Description

Conical rough reamer

Technical Field

The utility model belongs to the machining cutter, concretely relates to thick reamer of toper.

Background

When processing the bell mouth, generally use the drill bit drilling earlier, reuse lathe tool car cylindric lock, use tapered reamer ream into the bell mouth at last, tapered reamer will slowly stretch into the cylindric lock when the reaming, and use the reaming tooth of spreading all over the body to ream the cylindric lock into conical, present tapered reamer formula tapered reamer is whole formula tapered reamer usually, it is very easy wearing and tearing at reaming in-process reaming tooth portion, and because the lubricity is not enough, lack sufficient chip removal space between the reaming tooth, the smear metal is difficult for discharging, produce extra wearing and tearing easily, roughness to the taper hole inner wall produces the influence.

Disclosure of Invention

To the problem and the technical demand, the utility model provides a thick reamer of toper, it is equipped with detachable reamer piece, and convenient the change, the chip removal is smooth, and the reaming precision is very high.

The technical scheme of the utility model as follows: a conical rough reamer comprises a reamer handle and a reamer body, wherein the reamer handle and the reamer body are fixedly connected, the front three-quarter section of the reamer body is a reaming section, the reaming section is conical, a plurality of reaming teeth are arranged along the length direction of the reaming section, each reaming tooth comprises a reamer blade and a reamer blade base, the reamer blade base is straight, and the reamer blade base and the reamer body are integrally formed; the reamer blade is detachably connected with the blade base, the cutting surface of the reamer blade protrudes out of the blade base, the cutting edge of the reamer blade is arranged on the edge of the cutting surface, and a chamfer is arranged at the cutting edge. The reamer blade is detachably connected to the blade base, the edge portion of the reamer blade is used for cutting, when the edge portion is worn after being used for multiple times, the worn reamer blade can be replaced in time, and the service life of the reamer is prolonged.

Furthermore, an included angle formed between the chamfer at the edge part and the cutting surface is 30-45 degrees. The reaming is to gradually thin the inner wall of the round hole from outside to inside through rotation, and does not need to cut in place once, so that a chamfer is arranged on the edge part, the reaming process is gradually completed through mild rotation, and the edge part in the shape of the chamfer can be effectively protected, so that the edge part is not easy to break.

Furthermore, a plurality of tooth breaking grooves are formed in each reaming tooth at equal intervals, each tooth breaking groove is V-shaped, each tooth breaking groove transversely penetrates through the reaming blade and the blade base, and the bottoms of the V-shaped grooves formed in the reaming blade and the blade base are flush. In the rotation process of the reamer, the cutting fluid flows through the V-shaped groove and lubricates each position of the inner wall of the round hole, the high temperature generated by cutting is cooled and lubricated, and the phenomenon of cutter burning is effectively prevented.

Further, the taper angle of the reaming section ranges from 8 degrees to 10 degrees.

Furthermore, six reaming teeth are arranged on the cutter body, chip grooves are formed between every two adjacent reaming teeth, and a plurality of cooling liquid holes are formed in the bottom of each chip groove along the length direction of the chip groove.

Furthermore, the end of the cutter handle is provided with an oil filling hole, the oil filling hole extends inwards to the reaming section, the oil filling hole is communicated with all the cooling liquid holes, and cooling liquid injected through the oil filling hole flows out of all the cooling liquid holes to the chip groove. In the coolant liquid spout into the chip groove through oil filler point and each coolant liquid hole, a plurality of coolant liquid holes at chip removal tank bottom align to grid, can all play the effect of in time washing to all cuttings that get into chip groove each department, can also reduce downthehole temperature, can effectively prevent that the cuttings from leading to the fact the influence to further reaming.

Furthermore, in order to ensure the concentricity during reaming, the front end face of the cutter body is fixedly connected with a circular positioning block, a positioning hole is formed in the center of the circular positioning hole, and the positioning hole is concentric with the front end face of the cutter body.

Compared with the prior art, the beneficial effects of the utility model are that: the conical rough reamer is used for processing a conical hole which is communicated from front to back, reaming is carried out on the basis of a round hole, a round positioning hole at the front end of the reamer body can be in plug fit with an external positioning rod, the constant and non-offset shaft center of the reamer is ensured when reaming, and the vibration of the reamer body is reduced; the reamer blade on the cutter body can be freely replaced according to the abrasion condition, a plurality of coolant holes are directly led to different parts of the cutter body, the cutter body in work can be efficiently cooled and lubricated, and cuttings can be timely washed out.

Drawings

FIG. 1 is a three-dimensional structure view of the tapered rough reamer of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an axial structure view of the tapered reamer of the present invention;

FIG. 4 is an axial cross-sectional view taken at B-B of FIG. 3;

labeled as: the reamer comprises a hilt 1, a cutter body 2, a tooth breaking groove 21, a chip groove 22, a cooling liquid hole 23, an oil filling hole 24, a round positioning block 25, a positioning hole 251, a reaming tooth 3, a reamer blade 31, a cutting surface 311, a blade part 312 and a blade base 32.

Detailed Description

The invention is further described with reference to the following figures and examples.

As shown in fig. 1-4, the tapered reamer comprises a handle 1 and a body 2, the handle 1 is fixedly connected with the body 2, the front three quarters of the body 2 is a reaming section, the reaming section is tapered, and the taper angle of the reaming section ranges from 8 degrees to 10 degrees.

A plurality of reaming teeth 3 are arranged along the length direction of the reaming section, each reaming tooth 3 comprises a reaming blade 31 and a blade base 32, the blade base 32 is straight, the blade base 32 and the cutter body 2 are integrally formed, a plurality of tooth breaking grooves 21 are arranged on each reaming tooth 3 at equal intervals, the tooth breaking grooves 21 are V-shaped, each tooth breaking groove 21 transversely penetrates through the reaming blade 31 and the blade base 32, and the bottoms of the V-shaped groove grooves formed in the reaming blade 31 and the blade base 32 are flush.

The reamer blade 31 is detachably connected with the blade base 32, the cutting surface 311 of the reamer blade 31 protrudes out of the blade base 32, the edge part 312 of the reamer blade 31 is arranged at the edge of the cutting surface 311, a chamfer is arranged at the edge part 312, and an included angle of 30-45 degrees is formed between the chamfer at the edge part 312 and the cutting surface 311. The reaming is to gradually thin the inner wall of the round hole from outside to inside through rotation, and does not need to cut in place at one time, so that a chamfer is arranged on the edge part 312, the reaming process is gradually completed through mild rotation, and the edge part 312 in the shape of the chamfer can effectively protect the edge part 312 and is not easy to break.

Preferably, be equipped with six reaming teeth 3 on the cutter body 2, be chip groove 22 between two adjacent reaming teeth 3, every chip groove 22 bottom is equipped with a plurality of coolant liquid holes 23 along its length direction, 1 tip of handle of a knife is equipped with oil filler point 24, and oil filler point 24 inwards extends to the reaming section, and oil filler point 24 communicates with all coolant liquid holes 23, and the coolant liquid that pours into through oil filler point 24 flows out to chip groove 22 from each coolant liquid hole 23.

The front end face of the cutter body 2 is fixedly connected with a circular positioning block 25, a positioning hole 251 is formed in the center of the circular positioning hole 251, and the positioning hole 251 is concentric with the front end face of the cutter body 2.

The rough reamer is used for reaming a through circular through hole, the circular hole is reamed into a conical hole through the conical cutter body 2, the cutter body 2 is inserted from one end of the circular hole during reaming, the other end of the circular hole is provided with a positioning rod matched with the circular positioning block 25, the positioning rod is inserted into the positioning hole 251, and a reaming section is fed forwards along the direction of the positioning rod. The rotary cutter blade gradually penetrates deep, metal on the inner wall of the hole is cut layer by layer, cooling liquid is introduced from the oil injection hole 24, the cooling liquid is sprayed into the chip removal groove 22 from different cooling liquid holes 23, a part of cooling liquid washes machining chips out of the cutter body 2, a part of cooling liquid flows along the broken tooth groove 21 in the rotating process, and the cutter blade 312 is further lubricated and cooled until reaming is completed.

The above description is only for the preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes and substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a toper reamer, includes handle of a knife and cutter body, its characterized in that: the reaming cutter comprises a cutter handle, a cutter body and a reaming section, wherein the cutter handle is fixedly connected with the cutter body, the front quarter three sections of the cutter body are reaming sections, the reaming sections are conical, a plurality of reaming teeth are arranged along the length direction of the reaming sections, each reaming tooth comprises a reaming blade and a blade base, the blade base is in a straight strip shape, and the blade base and the cutter body are integrally formed; the reamer blade is detachably connected with the blade base, the cutting surface of the reamer blade protrudes out of the blade base, the cutting edge of the reamer blade is arranged on the edge of the cutting surface, and a chamfer is arranged at the cutting edge.

2. The tapered reamer of claim 1 wherein: an included angle of 30-45 degrees is formed between the chamfer at the edge part and the cutting surface.

3. The tapered reamer of claim 1 wherein: a plurality of tooth breaking grooves are formed in each reaming tooth at equal intervals and are V-shaped, each tooth breaking groove transversely penetrates through the reaming blade and the blade base, and the bottoms of the V-shaped grooves formed in the reaming blade and the blade base are flush.

4. The tapered reamer of claim 1 wherein: the taper angle range of the reaming section is 8-10 degrees.

5. The tapered reamer of claim 1 wherein: six reaming teeth are arranged on the cutter body, chip grooves are formed between every two adjacent reaming teeth, and a plurality of cooling liquid holes are formed in the bottom of each chip groove along the length direction of the chip groove.

6. The tapered reamer of claim 5 wherein: the end of the cutter handle is provided with an oil filling hole, the oil filling hole extends inwards to the reaming section, the oil filling hole is communicated with all the cooling liquid holes, and cooling liquid injected through the oil filling hole flows out of all the cooling liquid holes to the chip groove.

7. The tapered reamer of claim 1 wherein: the front end face of the cutter body is fixedly connected with a circular positioning block, a positioning hole is formed in the center of the circular positioning hole, and the positioning hole is concentric with the front end face of the cutter body.