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Blade-grinding forming disc milling cutter used for manufacturing eccentric screw rod of oil-extraction screw pump

An eccentric screw and screw pump technology, applied in milling cutters, manufacturing tools, milling machine equipment, etc., to ensure durability and reduce production costs

Active Publication Date: 2013-04-24
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, foreign countries strictly block this new technology, and even prohibit the introduction of this technology in our country

Method used

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  • Blade-grinding forming disc milling cutter used for manufacturing eccentric screw rod of oil-extraction screw pump
  • Blade-grinding forming disc milling cutter used for manufacturing eccentric screw rod of oil-extraction screw pump
  • Blade-grinding forming disc milling cutter used for manufacturing eccentric screw rod of oil-extraction screw pump

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Embodiment Construction

[0033] The process of processing the eccentric screw with the forming disc milling cutter of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] The forming disc milling cutter of this embodiment mainly includes a tool holder 1, a cutter head 2, and a screw rod 11 to be processed.

[0035] According to the radius R, eccentricity e and lead T of the cross-section of the screw to be processed, it is substituted into the helical surface equation of the eccentric screw, and the obtained eccentric screw helical surface equation and the corresponding parameters of the forming milling cutter are then substituted into the profile equation of the forming disc milling cutter , the cutter head 2 is designed according to the obtained shape milling cutter blade profile. The cutter head 2 is installed on the tool rest 1, and the cutter head 1 is equipped with twelve cutter heads 2, and the positioning groove...

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Abstract

The invention relates to a formed cutter used for processing an eccentric screw rod and belongs to the field of precise processing. The formed cutter is used for solving the manufacturing problem of a core part, namely the screw rod, of an oil-extraction screw pump. A cutter rest 1 and a cutter bit 2 are separately designed and are connected with each other through a bolt, wherein a positioning block 3 on the cutter rest 1 is tightly matched with a positioning slot 4 on the cutter bit 2, thereby preventing the cutter bit from shifting; and a constant rear cutter angle design is adopted for a rear cutter face 9 of the cutter bit 2, thereby maintaining a curve shape of a blade 7 after being grinded. The invention provides a special formed cutter for processing the eccentric screw rod, whichhas the advantages that the cutter rest and the cutter bit are separately manufactured, the sharpness and durability are excellent, the processing efficiency is high, the cost is low, the processing precision is easily ensured, and the like.

Description

Technical field: [0001] The present invention relates to a sharpening forming disc milling cutter used for manufacturing eccentric screw of oil production screw pump. Specifically, the invention relates to a kind of cutter used in the manufacture of oil production screw pump to process the eccentric screw which is the key part of oil production screw pump. Special shaped disc milling cutters that can be sharpened and have high durability. Background technique: [0002] With the continuous development of science and technology, various automated high-energy-consuming equipment are emerging. As the main energy source in the world, oil resources are becoming increasingly exhausted. Several large oil fields currently being exploited in my country: Daqing Oilfield, Huabei Oilfield, Liaohe Oilfield, Shengli Oilfield, Qinghai Oilfield, Xinjiang Tarim Oilfield, etc., have relatively small oil reserves. Taking Daqing Oilfield as an example, due to the long-term exploitation, the und...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23C5/08B23C5/20
Inventor 范晋伟李云陈东菊王晓峰李伟蒙顺政罗建平雒驼
Owner BEIJING UNIV OF TECH