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End effector for helical hole milling

A technology of end effector and helical milling hole, which is applied in the direction of driving device, milling machine equipment, milling machine equipment details, etc., can solve the problems of eccentricity error and eccentricity that cannot be automatically adjusted, so as to reduce heat accumulation, improve surface processing quality, Effect of improving tool life

Active Publication Date: 2020-09-01
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN102689040B discloses a helical milling device. By manually adjusting the eccentricity, the helical milling function of the workpiece is realized. However, the eccentricity cannot be adjusted automatically, and manual assistance is required, and there is an eccentricity error problem.
[0004] Chinese patent CN108515216B discloses a helical milling device, which realizes the motor-driven revolution mechanism and eccentric adjustment mechanism, and ensures the accuracy of the processed hole, but the device requires multiple motors as power sources

Method used

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  • End effector for helical hole milling
  • End effector for helical hole milling
  • End effector for helical hole milling

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Experimental program
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Effect test

Embodiment 1

[0042] In this embodiment, the processed workpiece aircraft skin material is made of 2024 aluminum alloy. Dimensions: diameter 120mm, width 100mm, thickness 2mm. The diameter of the milling cutter is 4mm, the rotational speed of the milling cutter is 3000r / min, the feed rate is 24mm / min, the diameter of the hole is φ5mm, and the eccentricity (e1 and e2 vector sum) is 0.5mm.

[0043] Conclusion: All the holes are completed, and the operation is convenient and easy to operate. The hole making precision of each hole can reach H8. It greatly reduces the work intensity of workers and improves work efficiency.

Embodiment 2

[0045] In this embodiment, the workpiece to be processed is a commonly used difficult-to-machine material, and the material is carbon fiber composite material (CFRP). Dimensions: diameter 120mm, width 100mm, thickness 2mm. The diameter of the milling cutter is φ6mm, the rotational speed of the milling cutter is 6000r / min, the feed rate is 48mm / min, the diameter of the hole is φ8mm, and the eccentricity (e1 and e2 vector sum) is 1mm.

[0046] Conclusion: All the holes are completed, and the operation is convenient and easy to operate. The hole making precision of each hole can reach H8. It greatly reduces the work intensity of workers and improves work efficiency.

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Abstract

The invention relates to an end effector suitable for helical hole milling. A servo motor and a helical milling unit assembly of the end effector are connected through a clutch conversion mechanism assembly, and the helical milling unit assembly is provided with a presser foot unit assembly. The single servo motor of the invention controls eccentric adjusting and revolution at the same time. The engagement state of gears by controlling an air cylinder, switching between eccentric distance adjusting and helical hole milling state adjusting is achieved, finally, it is achieved that the single servo motor simultaneously controls eccentric adjusting and revolution, and meanwhile, the self weight of the end effector is lowered.

Description

technical field [0001] The invention relates to the field of product machining and manufacturing, in particular to an end effector for helical milling holes. Background technique [0002] With the rapid development of manufacturing technology, machining, as the basic process of manufacturing technology, has made great progress, especially in the field of aerospace. In the manufacturing process of aerospace products, many parts need to process a large number of holes for later positioning and connection. The traditional hole-making process needs to go through drilling, reaming, countersinking, deburring and other processes. Although it can meet the technical requirements of hole-making, it generally has disadvantages such as low efficiency, unstable hole-making quality, and high processing costs. When there are many specifications for hole making, the tool needs to be replaced frequently, which further reduces the manufacturing accuracy and efficiency. For large-scale parts...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/00B23Q5/10B25J15/00B25J11/00
CPCB23C3/00B23Q5/10B25J15/0019B25J11/005
Inventor 刘伟军焦安源王静
Owner SHENYANG POLYTECHNIC UNIV
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