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Small-diameter internal reamer

A small-diameter, inner-hole technology, applied in the direction of reamers, reaming devices, metal processing equipment, etc., can solve the problems of small chip space, poor chip removal, and affecting the quality of hole processing, so as to improve the quality of small hole processing , Reduced manufacturing cost, excellent effect of chip holding condition

Inactive Publication Date: 2014-03-12
CHENGDU ENGINE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Reamers are usually used for processing small-diameter holes (diameter 1mm to 3mm). The existing non-extruded high-speed steel reamers have two structural forms: single-edged and four-edged. Single-edged reamers are not only difficult to manufacture, but also unilateral It leads to imbalance in use and affects the processing quality of the hole. Although the force of the four-edged reamer is balanced during use, its chip space is small, resulting in poor chip removal, and it takes a lot of man-hours to manufacture, which is difficult and expensive. increase

Method used

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  • Small-diameter internal reamer
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Examples

Experimental program
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Effect test

Embodiment 1

[0016] The small-diameter inner hole reamer described in this embodiment is used to process small holes with diameter d=1mm on parts made of 40Cr and 45# steel.

[0017] The structure of the small-diameter inner hole reamer described in this embodiment is as follows: figure 1 , figure 2 As shown, the cutter body 1 and the handle 2 are made of high-speed steel. The cutter body 1 is composed of two tooth-shaped blades with the same structure and center symmetry. The width B of the cutter body is 0.6 mm. The tooth-shaped blade is surrounded by the blade back 3, the rake face 4, the land 5, the first flank 6, the second flank 7 and the tooth back 8 successively.

[0018] The structure of each part of the toothed blade is as follows:

[0019] Such as figure 2 As shown, the rake face 4 is a vertical plane and passes through the center of the cutter body, the angle between the rake face and the vertical plane is the rake angle, the height h of the rake face is the depth of the c...

Embodiment 2

[0021] The small-diameter inner hole reamer described in this embodiment is used to process a small hole with a diameter d=2mm on parts made of titanium alloys Tc4 and Tc9.

[0022] The structure of the small-diameter inner hole reamer described in this embodiment is as follows: figure 1 , figure 2 As shown, the cutter body 1 and the handle 2 are made of high-speed steel. The cutter body 1 is composed of two tooth-shaped blades with the same structure and center symmetry. The width B of the cutter body is 1.4mm. The tooth-shaped blade is surrounded by the blade back 3, the rake face 4, the land 5, the first flank 6, the second flank 7 and the tooth back 8 successively.

[0023] The structure of each part of the toothed blade is as follows:

[0024] Such as figure 2 As shown, the rake face 4 is a vertical plane and passes through the center of the cutter body, the angle between the rake face and the vertical plane is the rake angle, the height h of the rake face is the dep...

Embodiment 3

[0026] The small-diameter inner hole reamer described in this embodiment is used to process a small hole with a diameter d=3mm on a part made of superalloy GH33.

[0027] The structure of the small-diameter inner hole reamer described in this embodiment is as follows: figure 1 , figure 2 As shown, the cutter body 1 and the handle 2 are made of high-speed steel. The cutter body 1 is composed of two tooth-shaped blades with the same structure and center symmetry. The width B of the cutter body is 1.5mm. The tooth-shaped blade is surrounded by the blade back 3, the rake face 4, the land 5, the first flank 6, the second flank 7 and the tooth back 8 successively.

[0028] The structure of each part of the toothed blade is as follows:

[0029] Such as figure 2 As shown, the rake face 4 is a vertical plane and passes through the center of the cutter body, the angle between the rake face and the vertical plane is the rake angle, the height h of the rake face is the depth of the c...

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Abstract

A small-diameter internal reamer is composed of a reamer body made of high-speed steel and a reamer handle, the reamer body is composed of two tooth-shaped blades (namely, two tooth-reamer bodies) which are identical in structure and centrosymmetric, the width B of the reamer body is equal to 0.5d-0.7d, the tooth-shaped blades are formed by defining and connecting blade backs, front reamer faces, blade strips, first rear reamer faces, second rear reamer faces and tooth backs in sequence, and d is the hole diameter of a machined hole.

Description

technical field [0001] The invention belongs to the field of cutters, and in particular relates to a non-extrusion reamer used for processing small-diameter holes (with a diameter of 1 mm to 3 mm). Background technique [0002] Reamers are usually used for processing small-diameter holes (diameter 1mm to 3mm). The existing non-extruded high-speed steel reamers have two structural forms: single-edged and four-edged. Single-edged reamers are not only difficult to manufacture, but also unilateral It leads to imbalance in use and affects the processing quality of the hole. Although the force of the four-edged reamer is balanced during use, its chip space is small, resulting in poor chip removal, and it takes a lot of man-hours to manufacture, which is difficult and expensive. increase. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a new type of small-diameter inner hole reamer, which not on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23D77/00
Inventor 刘建张思尧王红英姜宝华
Owner CHENGDU ENGINE GROUP