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A method of manufacturing an elbow screw

A manufacturing method and screw technology, applied in the field of fasteners, can solve the problems of long auxiliary time, slow speed, high manufacturing cost, etc., and achieve the effect of reducing impact and improving strength

Active Publication Date: 2021-08-03
上海窗固紧固件制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The elbow screw is made into a straight screw according to the usual process, and then bent on a punching machine. This processing method is slow, takes a long time to assist, and requires additional punching equipment, and the manufacturing cost is high.

Method used

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  • A method of manufacturing an elbow screw
  • A method of manufacturing an elbow screw
  • A method of manufacturing an elbow screw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment one, with reference to figure 1 and figure 2 , a method for manufacturing an elbow screw, comprising the steps of,

[0034] Step S1: wire drawing, the steel wire is processed by a coil wire drawing machine to obtain a corresponding diameter, which may be 3.5 mm to 4.5 mm.

[0035] Step S2: cutting, using a cutting machine to cut the drawn steel wire into steel wire segments, and the length of the steel wire segments is the same, and the length of the steel wire segments is 10 mm to 13 mm.

[0036] Then head the steel wire section that has been cut, that is, install one end of the steel wire section at the corresponding position of the header, and then head the steel wire section to obtain the screw head 2. The shape of the screw head 2 can be arranged in a round shape, and For the finished angle head screw, the screw head 2 and the straight rod part 3 are arranged coaxially.

[0037] Without removing the steel wire section, the screw head 2 is directly dr...

Embodiment 2

[0048] Embodiment 2 is different from Embodiment 1 in that, referring to image 3 and Figure 4 ,

[0049] A method of manufacturing an elbow screw, comprising the steps of,

[0050] Step S1: wire drawing, the steel wire is processed by a coil wire drawing machine to obtain a corresponding diameter, which may be 3.5 mm to 4.5 mm.

[0051] Step S2: cutting, using a cutting machine to cut the drawn steel wire into steel wire segments, and the length of the steel wire segments is the same, and the length of the steel wire segments is 10 mm to 13 mm.

[0052] Step S3: slotting, using a cutter to open an arc-shaped groove 1 on the steel wire section, the arc-shaped groove 1 is set close to the screw head 2, the arc-shaped groove 1 is set along the circumference of the steel wire section, and the angle of the arc-shaped groove 1 is set to 90~150 degrees , the depth of the arc-shaped groove 1 is 1 / 6~1 / 4 of the radius of the straight rod part 3, so as to adapt to the bending of the...

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Abstract

The invention discloses a manufacturing method of an elbow screw, which relates to the technical field of fasteners, and comprises the following steps: step S1: wire drawing; step S2: cutting; step S3: slotting, using a cutter to open an arc-shaped groove on a steel wire segment, The arc-shaped groove is set near the end of the steel wire section and along the circumference of the steel wire section; Step S4: Bending, using a bending machine to bend the end of the steel wire section close to the arc-shaped groove, so that the steel wire section is divided into a straight part and a bent part. The curved part, the straight rod part and the bent part intersect at the arc groove, and the bent part is bent toward the arc groove relative to the straight rod part; step S5: tail clamping; step S6: thread rolling once; step S7: heat treatment; Step S8: coating. The invention performs bending in the screw manufacturing process, thereby replacing the bending of the finished screw in the later stage, which not only reduces the cost, but also avoids clamping damage to the finished screw in the later bending process.

Description

technical field [0001] The invention relates to the technical field of fasteners, in particular to a method for manufacturing elbow screws. Background technique [0002] Screws are a common fastener widely used in machinery, electrical appliances and buildings. The general material is metal or plastic, in a cylindrical shape, and the surface is engraved with concave-convex grooves called threads. It uses the physical and mathematical principles of the oblique circular rotation and friction of the object to fasten the device parts step by step, so as to connect more than two objects. [0003] The elbow screw is made into a straight screw according to the usual process, and then bent on a punching machine. This processing method is slow, takes a long time, and requires additional punching equipment, resulting in high manufacturing costs. Contents of the invention [0004] The purpose of the present invention is to provide a method for manufacturing elbow screws. Bending is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
Inventor 邓国忠袁恵
Owner 上海窗固紧固件制造有限公司