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Variable pitch screw rotor forming device

A molding device and variable pitch technology are applied in the field of manufacturing equipment for variable-lead screw rotors, which can solve problems such as difficulty in realizing molding processing methods, and achieve the effects of batch processing, convenient disassembly and splicing, and guaranteeing processing accuracy.

Active Publication Date: 2019-08-13
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the lead of the screw rotor changes in the axial direction, the forming method is difficult to realize

Method used

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  • Variable pitch screw rotor forming device
  • Variable pitch screw rotor forming device
  • Variable pitch screw rotor forming device

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Effect test

Embodiment Construction

[0021] figure 1 It is a structural schematic diagram of the variable lead screw rotor of the present invention; figure 2 It is a sectional view of the screw forming die 7 of the present invention; image 3 It is the axonometric view of screw forming die 7 of the present invention; Figure 4 It is an explosion diagram of the present invention. The variable pitch screw rotor molding device of this embodiment includes a casing 9, a screw molding die 7 arranged in the casing 9 and having a screw cavity, and a tool for pressurizing the metal powder in the cavity. The push rod 5 and the guide sleeve 6 for guiding the push rod 5; the variable pitch screw rotor molding device of the present invention, when forming the screw, metal powder (using powder metallurgy) or molten metal (using die casting) It can be filled in the forming cavity 3 in the screw forming die 7, the inner end of the screw forming die 7 is limited and sealed by the tray 8, and the metal powder or molten metal i...

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Abstract

The invention discloses a variable pitch screw rotor forming device. The variable pitch screw rotor forming device comprises a machine shell, a screw forming die arranged in the machine shell and provided with a screw cavity, a push rod used for pressurizing metal powder in the cavity, and a guiding sleeve used for guiding the push rod. According to the forming device, it can be guaranteed that a screw rotor has good precision, later precision machining is convenient, meanwhile, high machining efficiency is achieved, and batched production of the screw rotor is convenient to achieve.

Description

technical field [0001] The invention relates to the field of manufacturing equipment of variable-lead screw rotors, in particular to a variable-pitch screw rotor forming device. Background technique [0002] As a typical volumetric machine, screw machines (including screw compressors, screw multiphase pumps, screw vacuum pumps, screw expanders, etc.) rely on the rotation of intermeshed screw rotors to produce volume changes, thereby realizing the compression of fluid media, The functions of transportation, extraction and expansion are widely used in energy, chemical, refrigeration and other industrial fields. [0003] With the development of screw machinery in the direction of high efficiency and precision, a number of new high-performance screw machinery have emerged. For example, the variable pitch (lead) screw vacuum pump, compared with the fixed lead screw vacuum pump, this type of vacuum pump can effectively reduce the temperature in the pump chamber and reduce the lea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/03B22F5/08B22D17/22
CPCB22D17/22B22F3/03B22F5/085
Inventor 唐倩严迪宋军刘宗敏
Owner CHONGQING UNIV
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