A self-locking nut three-point closing mold
A self-locking nut and mold technology, applied in the direction of nuts, forming tools, manufacturing tools, etc., can solve the problems of simultaneous three-point closing, inconvenient operation and use, low product qualification rate, etc., and achieves simple structure, convenient operation and deformation. unifying effect
Active Publication Date: 2018-12-07
QIFENG PRECISION IND SCI TECH
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Problems solved by technology
The existing three-point closing device is inconvenient to operate and use. If the force is uneven, the three-point closing cannot be guaranteed at the same time, resulting in poor closing effect and low product qualification rate
Method used
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[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0026] like figure 1 The illustrated embodiment is a self-locking nut three-point closing mold, including an upper mold 1 and a lower mold, and the lower mold includes a cover plate 2, a fixed sleeve 12, an outer jacket 3 and a base 4, and the The shape and size of the upper mold 1 are consistent with the cover plate 2 , and a jacket 3 is fixed on the base 4 .
[0027] like image 3 As shown, the fixed sleeve 12 is fixedly installed on the middle position of the inner base 4 of the outer casing 3, and the upper part of the fixed sleeve 12 is provided with a cylindrical accommodation area 7 inward...
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The invention relates to a self-locking nut three-point closing die. The self-locking nut three-point closing die comprises an upper die body and a lower die body. The lower die body comprises a cover plate, a fixed sleeve, an outer sleeve and a base. The upper die body and the cover plate are matched in shape and size. The outer sleeve is fixedly arranged on the base. The fixed sleeve is fixedly mounted in the middle of the portion, in the outer sleeve, of the base. A cylindrical containing region is arranged on the upper portion of the fixed sleeve inwards along the center of the upper surface. Three closing die bodies which are oppositely arranged and arranged at an angle of 120 degrees relative to one another are horizontally arranged on the side wall of the cylindrical containing region. The cover plate is arranged above the fixed sleeve. The cover plate is fixedly connected with the base through an extending-and-contracting moving mechanism. Under the pressure of the upper die body, the cover plate can move up and down along the extending-and-contracting moving mechanism; and the three closing die bodies can move towards the axis of the fixed sleeve at the same time under the acting force of the cover plate. The three-point closing die is simple in structure, small in size, convenient to operate and better in closing effect.
Description
technical field [0001] The invention relates to a three-point closing mold for a self-locking nut. Background technique [0002] As a commonly used fastener, self-locking nuts have the main functions of anti-loosening and anti-vibration. For self-locking closing nuts used in aerospace and other industries, the closing is made after the nut is made according to the conventional process, and the closing part of the nut is extruded by extrusion method, so that the screw hole of the closing part is along the radial direction. Plastic deformation occurs, and the radial size of the screw hole at the closing part is smaller than the radial size of the screw connected to it, so that when the screw connected to the nut enters the deformed screw hole of the nut, it is caused by the elastic deformation of the screw hole The radial pressure makes the nut tightly connected with the screw to achieve the purpose of anti-loosening. The extrusion deformation methods used for the closure of...
Claims
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IPC IPC(8): B21D53/24B21D37/10
CPCB21D37/10B21D53/24
Inventor 沈引良陈勤飞张艳郭军
Owner QIFENG PRECISION IND SCI TECH