A wing nut and its production process, stamping device
A technology of wing nuts and stamping devices, which is applied to nuts, swage forging presses, upsetting forging presses, etc., can solve the problems of easy loss of anti-slip gaskets and inconvenience of repeated use, and achieve smooth appearance, high use comfort, and Ease of use
Inactive Publication Date: 2018-10-30
SHAOXING UNIVERSITY
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Problems solved by technology
Because wing nuts are easy to use with bare hands and do not need other disassembly tools, wing nuts are generally used in parts that are frequently disassembled, but frequent disassembly causes the anti-slip gaskets to be easily lost, which will bring more benefits to the next reuse. Inconvenience
Method used
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Embodiment Construction
[0033] Such as figure 1 Shown, a kind of wing nut production technique comprises the steps:
[0034] 101. Cold heading step: cold piering the raw material into an initial blank with a spherical shape in the middle and cylindrical shapes on both sides;
[0035] 102. Stamping forming step: stamp the spherical shape in the middle of the initial blank into a circular frustum shape, and perform chamfering at 45 degrees up and down. The outer surface of the bottom of the circular table is stamped to form a ring-shaped ladder for the installation of gaskets; the chamfering can prevent punching and tapping. The burr is turned outward, and the edge of the through hole is relatively smooth.
[0036] 103. Step of flattening the wings: flatten the cylinders on both sides of the round platform to form wings;
[0037] 104. Punching step: punching holes in the middle of the round table to form through holes;
[0038] 105. The step of riveting the gasket: put the anti-slip gasket into the ...
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Abstract
The invention discloses a butterfly nut and its production process and stamping device. The production process includes the steps of cold heading, stamping forming, flattening double wings, punching, riveting gaskets and tapping threads; the stamping device includes a lower mold base , the upper surface of the lower mold base is fixed with a lower mold column, and the lower mold cavity is provided in the middle of the lower mold column to accommodate the lower mold. Contact, the bottom is in contact with the thimble spring, the upper mold is connected with the punch slide block, and corresponds to the lower mold, the lower surface of the upper mold and the upper surface of the lower mold are provided with corresponding annular grooves, and the top of the lower mold column An annular step is arranged on the inner wall. The wing nut includes a nut body and wings, and a non-slip washer is fixed on the bottom of the nut body. The wing nut automatic anti-slip gasket of the invention is convenient to use, adopts the combination of cold heading and stamping technology, has high product density, is firm and non-slip, has high comfort in use, and has a smooth appearance.
Description
technical field [0001] The invention relates to a butterfly nut, a production process thereof, and a stamping device, belonging to the field of nut production. Background technique [0002] Wing nut is a kind of nut, its shape is like a butterfly. When the wing nut is used, the wings of the wing are rotated by hand to generate torque to achieve the purpose of fastening. In order to increase the resistance of the wing nut and prevent the nut from sliding, it is generally necessary to use Place a spacer under the wing nut. Because wing nuts are easy to use with bare hands and do not require other disassembly tools, wing nuts are generally used in parts that are frequently disassembled. However, frequent disassembly will cause the anti-slip gasket to be easily lost, which will bring more benefits to the next reuse. Inconvenience. [0003] In view of this, the present inventor researches this, and specially develops a wing nut with its own gasket, its production process, and s...
Claims
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IPC IPC(8): B21K1/70B21J9/06
CPCB21J9/06B21K1/70
Inventor 卢雪萍
Owner SHAOXING UNIVERSITY