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Novel restricted contact external turning tool with non-equal restricted contact length

A cylindrical turning tool, a new type of technology, applied in turning equipment, manufacturing tools, tool holder accessories, etc., can solve the problems of shortening tool life, reducing cutting temperature, reducing cutting force, etc., to reduce cutting temperature, reduce The effect of cutting force and long service life

Inactive Publication Date: 2013-05-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It was found that limiting the length of contact l c When reduced to a certain value, limiting the contact tool can effectively reduce the cutting force and reduce the cutting temperature; however, when l c When it is further reduced, due to the low strength of the tool tip, the tool will be severely worn, causing the cutting force to suddenly increase and the tool life will be shortened
In addition, the traditional limited contact tools are mostly limited to a rectangular limited contact surface, that is, the equal limited contact length

Method used

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  • Novel restricted contact external turning tool with non-equal restricted contact length
  • Novel restricted contact external turning tool with non-equal restricted contact length
  • Novel restricted contact external turning tool with non-equal restricted contact length

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 , figure 2 As shown, a new limited-contact cylindrical turning tool with non-equal limited contact lengths includes a cutter body 3 and a blade 1 fixed on the cutter body 3 by screws 2. The rake face of the blade 1 is provided with a straight line Shaped groove 11 used to limit the contact length between the insert 1 and the chip, the distance between each point in the length direction of the groove 11 and the main cutting edge 12 is continuously changing, and the distance is toward the tool tip Gradually increase.

[0029] The limited contact length determined by the distance between the groove 11 and the main cutting edge 12 is 0.20-0.80 mm.

[0030] The included angle between the center line of the groove 11 and the main cutting edge 12 is 5°-45°.

[0031] The blade 1 is formed by powder metallurgy technology.

[0032] In addition, the round turning tool can have various basic parameters such as rake angle, relief angle, edge inclination angle, ...

Embodiment 2

[0035] Such as image 3 , Figure 4 As shown, a new limited-contact cylindrical turning tool with non-equal limited contact lengths includes a cutter body 3 and an insert 1 fixed on the cutter body 3 by screws 2. The rake face of the insert 1 is provided with a V A font-shaped groove 11 used to limit the length of contact between the insert 1 and the chip. The distance between each point in the length direction of the groove 11 and the main cutting edge 12 changes continuously, and the distance gradually changes toward the tool tip. increase.

[0036] The limited contact length determined by the distance between the groove 11 and the main cutting edge 12 is 0.20-0.80 mm.

[0037] The included angle between each straight line segment of the centerline of the groove 11 and the main cutting edge 12 is 5°-45°.

[0038] The blade 1 is formed by powder metallurgy technology.

[0039] In addition, the round turning tool can have various basic parameters such as rake angle, relief...

Embodiment 3

[0043] Such as Figure 5 , Figure 6 As shown, a new type limited contact outer circle turning tool with non-equal limited contact length includes a cutter body 3 and an insert 1 fixed on the cutter body 3 by screws 2. The rake face of the insert 1 is provided with a circle The arc-shaped groove 11 is used to limit the contact length between the insert 1 and the chips. The distance between each point in the length direction of the groove 11 and the main cutting edge 12 is continuously changed, and the distance is towards the tool tip Gradually increase.

[0044] The limited contact length determined by the distance between the groove 11 and the main cutting edge 12 is 0.20-0.80 mm.

[0045] The included angle between the tangent of each point on the center line of the groove 11 and the main cutting edge 12 is 5°-45°.

[0046] The blade 1 is formed by powder metallurgy technology.

[0047] In addition, the round turning tool can have various basic parameters such as rake an...

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Abstract

The invention discloses a novel restricted contact external turning tool with non-equal restricted contact length. The novel restricted contact external turning tool comprises a tool body and a blade fixed to the tool body through a screw; the front blade surface of the blade is provided with a groove which is in a certain geometrical shape and used for restricting the contact length of the blade and cuttings; and a distances between each point of the groove in the length direction and a main cutting blade is continuously changed and gradually increased towards the tool nose direction. The front blade surface of the blade is provided with the groove which has a continuously changed distance with the main cutting blade, a geometrical relationship between the groove and the main cutting blade is reasonably controlled, the cutting force and cutting temperature are reduced, the sufficient strength of the blade is ensured, the curling directions of the cuttings can be controlled, and the service life is long; and during production, the blade is formed through a powder metallurgic forming technology and is suitable for mass production, the machining is convenient and the efficiency is high.

Description

technical field [0001] The invention relates to the field of cutting tools in metal cutting, in particular to a novel limited contact outer circle turning tool with unequal limited contact lengths. Background technique [0002] As early as the 1980s, because of its good cutting performance, the limited contact tool has caused a lot of attention in the field of metal cutting, such as reducing the main cutting force by 15%~25%, reducing the feed force by 50%~60%, and reducing the cutting temperature by about 100°C. researcher's interest. It was found that limiting the length of contact l c When reduced to a certain value, limiting the contact tool can effectively reduce the cutting force and reduce the cutting temperature; however, when l c When it is further reduced, due to the low strength of the tool tip, the tool will be severely worn, causing the cutting force to suddenly increase, and the tool life will be shortened. In addition, most of the traditional limited cont...

Claims

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Application Information

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IPC IPC(8): B23B27/00
Inventor 邓文君李庆李炳林何永泰詹俊赋
Owner SOUTH CHINA UNIV OF TECH