Processing method of aramid fiber reinforced polytetrafluoroethylene holder

Abstract

The invention discloses a processing method of an aramid fiber reinforced polytetrafluoroethylene holder. The aramid fiber reinforced polytetrafluoroethylene holder (1) comprises two lateral end faces (1.1), a pocket (1.2), an outer-diameter end face (1.3) and an inner-diameter end face (1.4); stable treatment I, semi-finish turning on the outer-diameter end face, semi-finish turning on the inner-diameter end face and stable treatment II are added on the basis of the conventional processing; a bakelite expander (2) is used in the semi-finish turning on the outer-diameter end face and semi-finish turning on the inner-diameter end face; the bakelite expander comprises a lathe clamping section (2.2) and a holder fixing section (2.3); and the whole processes of rough turning on the inner-diameter end face, rough turning on the outer-diameter end face, stable treatment I, turning on the two lateral end faces, semi-finish turning on the outer-diameter end face, semi-finish turning on the inner-diameter end face, distributing and drilling pocket, stable treatment II, finish turning on the inner-diameter end face, finish turning on the outer-diameter end face, and final detection are finally formed. The demands on the processing environment temperature are provided, so that the manufacturing percent of pass of the aramid fiber reinforced polytetrafluoroethylene holder is improved to 80% from below 20% in the prior art.

Description

technical field [0001] The invention belongs to the technical field of bearing processing, and in particular relates to a processing method of an aramid fiber reinforced polytetrafluoroethylene cage. Background technique [0002] combine figure 1 , Aramid reinforced PTFE cage 1 is a cage made of non-metallic materials. Aramid reinforced PTFE cage 1 has two side end faces 1.1, pocket holes 1.2, outer diameter end face 1.3 and inner diameter end face 1.4 . [0003] Metal cages usually also have end faces on both sides, pocket holes, outer diameter end faces, and inner diameter end faces. The processing steps of metal cages are: rough turning inner diameter end faces→rough turning outer diameter end faces→turning both side end faces→drilling pocket holes→finishing The end face of the inner diameter of the car → the end face of the outer diameter of the fine car → the final inspection. Because the material of the metal cage is relatively hard, soft jaws and elastic chucks a...

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Problems solved by technology

[0004] The tensile strength of the aramid reinforced PTFE cage is 23.8MP a , elongation at break is 17.2%, coefficient of friction is 0.282, coefficient of linear expansion is 3.5x10 -5 , because the material of the aramid-reinforced PTFE cage is soft and the stress is large, if the above-mentioned processing method is used and the soft jaw or elastic chuck is used on an ordinary lathe, it cannot meet the requirements of the aramid-reinforced PTFE cage. The production and processing of the processed products is less than 20%, and it will be particularly important to improve the processing pass rate

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