CN210359583U

CN210359583U - Trisection composite reamer

Info

Publication number: CN210359583U
Application number: CN201921282029.8U
Authority: CN
Inventors: 张书林; 刘花平; 张涛; 张蕾; 张建平
Original assignee: Shijiazhuang Huide Mechanical Tool Factory
Current assignee: Shijiazhuang Huide Mechanical Tool Factory
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-04-21
Anticipated expiration: 2029-08-08

Abstract

The utility model provides a trisection compound reamer belongs to cutting tool technical field, including handle of a knife, tool bit, chip removal structure and cooling structure, be equipped with first blade, second blade, third blade and the fourth blade that the diameter gradually increases on the tool bit in proper order, all be equipped with the three cutting edge of partition circumference on the periphery of first blade, second blade, third blade and fourth blade, the sweeps can be discharged to the chip removal structure, and cooling structure is used for the blade cooling. The utility model provides a trisection composite reamer, a plurality of blades set up on the tool bit and can form step tool bit structure, can once only accomplish the processing of the big aperture of work piece, and easy and simple to handle, labour saving and time saving, and the hole precision after the processing is high, steady quality, and process velocity is fast.

Description

Trisection composite reamer

Technical Field

The utility model belongs to the technical field of cutting tool, more specifically say, relate to a trisection composite reamer.

Background

In machining, a reamer is a common hole expanding or repairing tool, and is used for fine machining of holes. The existing reamer generally comprises a cutter body and a working part, is mainly used for semi-machining and finish machining of holes, has small cutting allowance, and is used for replacing other cutters to perform rough machining and then performing finish reaming by using the reamer when machining the holes with large cutting allowance. Meanwhile, if the machined workpiece needs chamfering, the cutter needs to be additionally replaced, so that the production efficiency is greatly reduced; meanwhile, the reamer is not provided with a chip removal structure and a cooling structure, chips in machining cannot be discharged in time, the chips abrade the surface of the hole, machining precision is further influenced, the heat productivity of the blade is large, and the service life of the blade is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a trisection composite reamer to solve the technical problem that needs often change cutter, production efficiency low, piece wearing and tearing hole to the great spot facing work of surplus that exists among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: provided is a trisection compound reamer, comprising:

one end of the cutter handle is provided with a key groove for connecting cutting equipment;

the cutter head is fixedly arranged at one end of the cutter handle and is coaxial with the cutter handle, a first blade, a second blade, a third blade and a fourth blade with gradually-increased diameters are sequentially arranged on the cutter head from the end part to the inner side, and three cutting edges which are equally divided into circles are arranged on the circumferential surfaces of the first blade, the second blade, the third blade and the fourth blade; the cutting edge comprises a cutting tip and a plurality of cutting edges;

the chip removal structure is arranged on the tool bit and the tool handle, is parallel to the length direction of the tool bit and is used for discharging waste chips generated in the drilling process of the tool bit;

the cooling structure is used for cooling the cutter head and comprises a main pipeline and a plurality of branch pipelines; the main pipeline sequentially penetrates through the central shafts of the cutter handle and the cutter head, one end of each branch pipeline is communicated with the main pipeline, and the other end of each branch pipeline is communicated with the outer wall of the cutter head.

Further, the branch pipeline is respectively provided with ports at the inner sides of the first blade, the second blade, the third blade and the fourth blade and is respectively communicated to the first blade, the second blade, the third blade and the fourth blade.

Further, the number of the branch pipelines is 4, and the branch pipelines are sequentially arranged on the main pipeline.

Further, the chip removal structure is a chip removal groove, and is arranged along the drilling direction of the cutter head, one end of the chip removal structure is communicated with the end part of the cutter head, and the other end of the chip removal structure is arranged on the cutter handle.

Further, an included angle e between a vertical cutting edge of the cutting edge and a horizontal cutting edge of the cutting edge is 83-87 degrees, and an included angle f between a horizontal line where a cutting tip of the cutting edge is located and an outer side cutting edge of the cutting edge is 8-12 degrees.

Further, the handle of a knife includes linkage segment and chip removal end, the linkage segment is used for connecting cutting equipment, the chip removal section is used for discharging the sweeps.

Furthermore, a chamfer a with the size of 1 × 45 degrees is arranged on the front end face of the first blade, a chamfer b with the size of 0.5 × 45 degrees is arranged at the position where the first blade is connected with the second blade, a chamfer c with the size of 1.25 × 45 degrees is arranged at the position where the second blade is connected with the third blade, and a chamfer d with the size of 0.5 × 45 degrees is arranged at the position where the third blade is connected with the fourth blade.

Further, the first blade, the second blade, the third blade and the fourth blade are all made of hard alloy steel.

Further, the diameter of the first blade is 13-15mm, the diameter of the second blade is 14-16mm, the diameter of the third blade is 16.5-18.5mm, and the diameter of the fourth blade is 21-23 mm.

Further, the tool shank adopts a Morse No. 3 taper shank.

The utility model provides a trisection composite reamer's beneficial effect lies in: compared with the prior art, the utility model discloses trisection composite reamer, a plurality of blades set up on the tool bit and can form stepped structure, can once only accomplish the processing of the big aperture on the work piece, and is easy and simple to handle, time saving and labor saving, and the hole precision after the processing is high, the steady quality, it is also fast, solved to the great spot facing work of surplus, need often change the cutter, drilling efficiency is low, the handle of a knife is fixed shakiness, the spot facing work quality is low, the technical problem that blade life is short, it is fast to have an operating speed, can be the shaping to hole one-shot operation, high machining efficiency, need not often change the cutter, high machining quality, the long technological effect of blade live time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a trisection compound reamer provided in an embodiment of the present invention;

FIG. 2 is an enlarged view at E in FIG. 1;

FIG. 3 is a cross-sectional view at A-A or B-B or C-C or D-D in FIG. 1;

fig. 4 is an enlarged view of the insert and cutting edge configuration of fig. 3.

Wherein, in the figures, the respective reference numerals: 1. a knife handle; 11. a connecting section; 12. a chip removal section; 2. a cutter head; 21. a first blade; 22. a second blade; 23. a third blade; 24. a fourth blade; 3. a cutting edge; 4. a chip removal structure; 5. a cooling structure; 51. a main pipeline; 52. and (4) branch pipelines.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 4 together, a trisection compound reamer according to an embodiment of the present invention will now be described. The trisection composite reamer comprises a reamer handle 1, a reamer head 2, a chip removal structure 4 and a cooling mechanism 5;

one end of the cutter handle 1 is provided with a key groove for connecting cutting equipment;

the cutter head 2 is fixedly arranged at one end of the cutter handle 1 and is coaxial with the cutter handle 1, a first blade 21, a second blade 22, a third blade 23 and a fourth blade 24 with gradually-increased diameters are sequentially arranged on the cutter head 2 from the end part to the inner side, and three cutting edges 3 which are equally divided into circles are arranged on the circumferential surfaces of the first blade 21, the second blade 22, the third blade 23 and the fourth blade 24; the cutting edge 3 comprises a cutting tip and a plurality of cutting edges, the cutting tip is a tip part directly contacted with the hole, and the rest parts are the cutting edges.

Chip removal structure 4 is located tool bit 2 with on the handle of a knife 1, with 2 length direction parallel arrangement of tool bit for discharge the sweeps that produces in the tool bit 2 bores, sweeps along the direction of creeping into of tool bit 2 to handle of a knife 1 department removal and follow handle of a knife 1 and flow, can not influence the surface in hole, improve the spot facing work precision.

The cooling structure 5 is used for cooling the cutter head 2, and the cooling structure 5 comprises a main pipeline 51 and a plurality of branch pipelines 52; the main pipeline 51 sequentially penetrates through the central shafts of the tool holder 1 and the tool bit 2, one end of each of the branch pipelines 52 is communicated with the main pipeline 51, and the other end of each of the branch pipelines is communicated with the outer wall of the tool bit 2. The cooling liquid flows through the main pipeline 51, respectively reaches the first blade 21, the second blade 22, the third blade 23 or the fourth blade 24 through the branch pipeline 52, and can be cooled in time, the heat productivity of the blades is small, and the service life of the blades is prolonged.

The diameter of the first blade 21 is smaller than that of the second blade 22, the diameter of the second blade 22 is smaller than that of the third blade 23, and the diameter of the third blade 23 is smaller than that of the fourth blade 24; three cutting edges 3 which are equally divided into circles are arranged on the circumferential surfaces of the first blade 21, the second blade 22, the third blade 23 and the fourth blade 24; the cutting edges 3 are arranged in 3, i.e. one cutting edge 3 is arranged every 120 °, on the circumferential surface of the cutting head 2, the cutting edges 3 being arranged in grooves on the circumferential surface of the cutting head 2 and being fixedly connected.

The embodiment of the utility model provides a trisection composite reamer, compared with the prior art, a plurality of blades set up on tool bit 2 and can form the stepped structure, can once only accomplish the processing of the big aperture of work piece, and is easy and simple to handle, time saving and labor saving, and the hole precision after the processing is high, stable in quality, and is fast, solved to the great spot facing work of surplus, need often change the cutter, the reduction efficiency, 1 fixed shakiness of handle of a knife, influence hole processingquality's technical problem, it is fast to have an operating speed, can take shape to hole one-time operation, high machining efficiency, need not often change the cutter, the high technological effect of processingquality.

As a specific implementation manner of the trisection compound reamer according to an embodiment of the present invention, please refer to fig. 1, the branch pipe 52 is respectively provided with ports at the inner sides of the first blade 21, the second blade 22, the third blade 23 and the fourth blade 24, and is respectively communicated to the first blade 21, the second blade 22, the third blade 23 and the fourth blade 24. The cooling liquid in the branch pipeline 52 flows to the blade in the drilling process, so that the blade is cooled, the heat productivity of the blade is reduced, and the service life of the blade is prolonged.

As a specific implementation manner of the trisection composite reamer provided in the embodiment of the present invention, please refer to fig. 1, the number of the branch pipes 52 is 4, and the branch pipes are sequentially arranged on the main pipe 51. The number of the branch pipes 52 is 4, and the branch pipes 52 are arranged in parallel, and one blade is provided with one branch pipe 52, and cooling liquid flows to the blade in the drilling process.

As a specific implementation manner of the trisection composite reamer provided by the embodiment of the present invention, please refer to fig. 1, the chip removal structure 4 is a chip removal groove, and is arranged along the drilling direction of the tool bit 2, and one end of the chip removal structure is communicated with the end of the tool bit 2, and the other end of the chip removal structure is arranged on the tool shank 1. The chip groove is a long-strip groove body structure, and chips can be processed in the groove body in a circulating mode.

As a specific implementation manner of the trisection composite reamer provided by the embodiment of the present invention, please refer to fig. 1 and 4, an included angle e between a vertical cutting edge of the cutting edge 3 and an outer side cutting edge of the cutting edge 3 is 83 to 87 degrees, preferably 85 degrees, and an included angle f between a horizontal line where a cutting tip of the cutting edge 3 is located and a horizontal cutting edge of the cutting edge 3 is 8 to 12 degrees, preferably 10 degrees. The angle parameters are processing parameters which are obtained through a plurality of tests and applied to the large holes with allowance, and the parameters are high in drilling efficiency, capable of being formed at one time and high in production efficiency. According to the machining requirements, the position parameters of the cutting edge 3 on the cutter head 2 are arranged, so that the precision of a hole to be machined can be improved to the maximum extent, the abrasion is reduced, and the efficiency is improved.

As a specific implementation manner of the trisection composite reamer provided by the embodiment of the present invention, please refer to fig. 1 and 4, the handle 1 includes a connecting section 11 and a chip removal end 12, the connecting section 11 is used for connecting a cutting device, and the chip removal section 12 is used for discharging waste chips. Chip removal section 12 with tool bit 2 fixed connection, the front end at tool bit 2 is established to the entrance point of chip groove, and the exit end is established on chip removal section 12.

As a specific implementation manner of the trisection compound reamer provided in the embodiment of the present invention, please refer to fig. 1 to 2 together, a chamfer a with a size of 1 × 45 ° is provided on the front end surface of the first blade 21, a chamfer b with a size of 0.5 × 45 ° is provided at a position where the first blade 21 and the second blade 22 are connected, a chamfer c with a size of 1.25 × 45 ° is provided at a position where the second blade 22 and the third blade 23 are connected, and a chamfer d with a size of 0.5 × 45 ° is provided at a position where the third blade 23 and the fourth blade 24 are connected.

As a specific implementation manner of the trisection compound reamer provided in the embodiment of the present invention, please refer to fig. 1, the first blade 21, the second blade 22, the third blade 23 and the fourth blade 24 are made of hard alloy steel.

As a specific implementation manner of the trisection compound reamer provided by the embodiment of the present invention, please refer to fig. 1, the diameter of the first blade 21 is 13-15mm, preferably 14 mm; the diameter of the second blade 22 is 14-16mm, preferably 15 mm; the diameter of the third blade 23 is 16.5-18.5mm, preferably 17.5 mm; the diameter of the fourth blade 24 is 21-23mm, preferably 22 mm. The diameters of the blades on the tool bit 2 are different, and the compound tool can be used for machining and forming holes at one time, so that the operation of reamers with different diameters is avoided, the precision of machining holes is improved, and the machining efficiency is improved.

As a specific implementation manner of the trisection composite reamer provided by the embodiment of the present invention, please refer to fig. 1, the shank 1 is a morse No. 3 taper shank. The heat treatment hardness index of the knife handle 1 is HRC40-45, so that the processing requirement can be met.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Trisection composite reamer, characterized in that includes:

2. The trisection compound reamer of claim 1 wherein the branch conduit is ported inboard of and communicates to the first, second, third and fourth blades, respectively.

3. The trisected composite reamer of claim 1 wherein the number of branch lines is 4 and arranged in sequence on the main line.

4. The trisection compound reamer of claim 1 wherein the chip removal structure is a chip removal groove disposed along the drilling direction of the bit, one end communicating with the end of the bit and the other end disposed on the shank.

5. The trisection compound reamer of claim 1 wherein the angle e between the vertical cutting edge of said cutting edge and the horizontal cutting edge of said cutting edge is 83-87 ° and the angle f between the horizontal line of the cutting tip of said cutting edge and the outside cutting edge of said cutting edge is 8-12 °.

6. The trisect compound reamer of claim 1 wherein the shank includes a coupling section for coupling to a cutting device and a chip evacuation end for evacuating debris.

7. The trisection compound reamer as claimed in claim 1, wherein a chamfer a having a size of 1 x 45 ° is provided on a front end surface of the first blade, a chamfer b having a size of 0.5 x 45 ° is provided on a portion where the first blade is connected to the second blade, a chamfer c having a size of 1.25 x 45 ° is provided on a portion where the second blade is connected to the third blade, and a chamfer d having a size of 0.5 x 45 ° is provided on a portion where the third blade is connected to the fourth blade.

8. The trisected compound reamer of claim 1 wherein the first, second, third and fourth blades are all made of a hard alloy steel.

9. The trisection compound reamer of claim 1 wherein the first blade has a diameter of 13-15mm, the second blade has a diameter of 14-16mm, the third blade has a diameter of 16.5-18.5mm, and the fourth blade has a diameter of 21-23 mm.

10. The trisection compound reamer of claim 1 wherein the shank is a morse No. 3 taper shank.