CN211387179U

CN211387179U - Low-speed reamer for lengthening hand

Info

Publication number: CN211387179U
Application number: CN201921667521.7U
Authority: CN
Inventors: 刘健; 舒建国; 聂超球
Original assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Current assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-09-01
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses an extension hand is with low-speed reamer, a serial communication port, including tool bit and handle of a knife, the guide area before the tool bit front end is equipped with, the handle of a knife part is equipped with back guide area, the handle of a knife rear end is equipped with the interface zone and accords with general electric drill interface standard, the interface zone is connected with handheld electric drill, the tool bit divide into cutting section and extrusion section, the extrusion section is connected with the handle of a knife, the cutting section is connected with preceding guide area. Through the utility model discloses an increase manual reamer, pair processing or finish machining to the part that needs processing, improve machining efficiency, reduce the processing degree of difficulty, guaranteed the quality, the cost has been reduced.

Description

Low-speed reamer for lengthening hand

Technical Field

The utility model relates to a machinery processing technology field specifically is a low-speed reamer is used to extension hand.

Background

The following two types of situations are often encountered in production and maintenance: firstly, precision holes on a product have higher quality and surface requirements, in order to protect parts from being damaged in the installation process, the precision holes are usually arranged in the last step of assembly to finish the final finish machining, and special fixtures and cutters are required to be customized due to the irregular appearance of the assembled product; the product is maintained and repaired in return factory, former accurate hole and bush after using, wearing and tearing have taken place, surface quality and geometric tolerances can not reach former design requirement, hole and bush's shape can all take place great deformation or damage sometimes, the maintenance in-process, need with the hole enlargement originally on the product, then the bush of renewal, if disassemble the product again after completely disassembling, the time-consuming and time-consuming cost is too high, also can bring certain quality risk because of dismantling and secondary assembly.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides an extension hand is with low-speed reamer accomplishes and has assembled the accurate spot facing work of product and accomplish the reaming processing under the product prerequisite not dismantling.

The utility model adopts the technical proposal that: the utility model provides a manual low-speed reamer of extension, includes tool bit and handle of a knife, the tool bit front end is equipped with preceding guide area, the handle of a knife rear end is equipped with the interface region, the interface region is connected with handheld electric drill, the tool bit divide into cutting section and extrusion section, the extrusion section is connected with the handle of a knife, the cutting section is connected with preceding guide area.

Further, the width of the cutting edge of the cutting section is 2-3 times that of a common reamer, the width of the cutting edge of the common reamer is about 0.5-1mm, and the width of the cutting edge of the cutting section is 1.5-2mm, so that the service life of the reamer can be effectively prolonged, but the cutting edge is not too wide easily, and the friction force is also obviously increased along with the width during cutting.

Further, the front angle of the cutting edge of the cutting section is 90 degrees, and the rear angle is 5-8 degrees; the front angle of the cutting edge of the extrusion section is 85 degrees, and the back angle is 6-10 degrees.

Further, the length of the cutting section is 30-50 mm; the length of the extrusion section is 50-200 mm.

Furthermore, the handle part is provided with a rear guide area, and the rear end of the handle is provided with an interface area which meets the interface specification of the electric universal drill.

Further, the front guide area, the tool bit, the tool shank, the rear guide area and the interface area are integrally formed.

The utility model has the advantages that: through the utility model discloses an add long hand reamer, pair processing or finish machining to the part that needs processing, improve machining efficiency, reduce the processing degree of difficulty, guaranteed the quality, the cost is reduced, especially is fit for some local maintenance or inconvenient dismantlement and has the assembly occasion of certain required precision, can to a great extent reduce the operating time and the construction degree of difficulty.

Drawings

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

FIG. 2 is a partial view of a cutting edge of the cutting segment A-A of FIG. 1 in cross-section;

FIG. 3 is a partial view of the pressing blade of the cross-sectional view of pressing section B-B of FIG. 1;

fig. 4 is a schematic view of the working state structure of the present invention.

Detailed Description

In order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.

As shown in figures 1 to 4, the lengthened hand-used low-speed reamer comprises a cutter head 1 and a cutter handle 2, wherein a front guide area 3 is arranged at the front end of the cutter head 1, a rear guide area 6 is arranged at the part of the cutter handle 2, an interface area 4 is arranged at the rear end of the cutter handle 2, and the interface area 4 accords with the interface specification of a universal electric drill and can be used in a plug-and-play mode. In this embodiment, the interface region 4 is connected to a hand held power drill 5. The front guiding area 3, the cutting head 1, the shank 2, the rear guiding area 6 and the interface area 4 are integrally formed.

The front part and the middle-rear part of the reamer body are provided with front and rear guide areas so as to ensure that the cutter and a part are coaxial in the machining process and play a role in guiding.

The tool bit 1 is divided into a cutting section 11 and an extrusion section 12, the extrusion section 12 is connected with the tool shank 2, and the cutting section 11 is connected with the front guide area 3. The cutting section is used for cutting off redundant metal materials on a product hole, the extruding section is used for finishing the surface smoothness of the hole and strengthening the strength of the hole, in order to prolong the service life of a cutter, the reamer is designed to widen the cutting edge of the cutting section to be 2-3 times that of a common reamer, the cutting edge of the common reamer is about 0.5-1mm, the cutting edge of the reamer is 1.5-2mm, the service life of the reamer can be effectively prolonged, but the cutting edge is not easy to be too wide, and the friction force can also be obviously increased along with the width during cutting. The front angle of the cutting edge of the cutting section is 90 degrees, and the rear angle is 5-8 degrees; the front angle of the cutting edge of the extrusion section is 85 degrees, and the rear angle is 6 degrees to 10 degrees, so that the durability of the cutter can be improved.

The length of the cutting section is 30-50 mm; the length of the extrusion section is 50-200 mm.

Adopt the utility model discloses the working process of reamer is as follows:

1. the hand reamer with matched diameter and length (the size of the reamer is basically consistent with the size of the hole and is standard) is selected according to the diameter and the processing length of the hole 8 to be processed of the product part 7.

2. The reamer interface area is arranged on the hand-held electric drill, and before the hand-held electric drill is started, whether the cutter is firmly installed or not needs to be carefully checked.

3. And (3) extending the front guide area of the reamer into the hole to be processed until the cutting section reaches the hole opening to be reamed, and checking the coaxial relation between the front guide area and the hole and whether the cutter is firmly installed or not.

4. The lower rotating speed is selected for starting, the uniform propelling is carried out, and the rotating speed and the feeding speed can be increased after the section to be cut enters 10 mm.

5. When the blade extruding section works, the higher rotating speed and the slow feeding can be selected according to the requirement so as to improve the surface quality of the hole wall

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. The utility model provides a manual low-speed reamer of extension which characterized in that, includes tool bit and handle of a knife, the tool bit front end is equipped with preceding guide area, the handle of a knife rear end is equipped with the interface area, the interface area is connected with handheld electric drill, the tool bit divide into cutting section and extrusion section, the extrusion section is connected with the handle of a knife, the cutting section is connected with preceding guide area.

2. The extended length manual reamer of claim 1 wherein the cutting edge width of the cutting section is 3 times that of a conventional reamer having a cutting edge of 0.5-1 mm.

3. The extended reach low speed reamer of claim 1 wherein the cutting edge of the cutting section has a rake angle of 90 ° and a relief angle of 5 ° to 8 °; the front angle of the cutting edge of the extrusion section is 85 degrees, and the back angle is 6-10 degrees.

4. The extended reach low speed reamer of claim 1 wherein the length of the cutting section is 30 to 50 mm; the length of the extrusion section is 50-200 mm.

5. The extended length handheld low speed reamer of claim 1 wherein the shank portion is provided with a rear guide area and the rear end of the shank is provided with an interface area which meets general electric drill interface specifications.

6. The extended length hand reamer of claim 1 wherein the forward pilot region, the bit, the shank, the rearward pilot region and the interface region are integrally formed.