Unlock instant, AI-driven research and patent intelligence for your innovation.

Two-steel screw with an extrusion connection and method for producing said screw

A technology of bolts and bolt heads, which is applied in the direction of bolts, manufacturing tools, connecting components, etc., can solve the problems of high scrap rate, high inspection cost, etc., and achieve the effect of reliable connection and improved torque transmission

Inactive Publication Date: 2016-11-16
EJOT GMBH & CO KB
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the double-steel bolts known in the prior art and the methods for producing such double-steel bolts have a high reject rate and high inspection costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Two-steel screw with an extrusion connection and method for producing said screw
  • Two-steel screw with an extrusion connection and method for producing said screw
  • Two-steel screw with an extrusion connection and method for producing said screw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] figure 1 A double steel bolt 10 is shown, wherein the double steel bolt 10 has a head 12 and a cutout 14 . Furthermore, the head 12 has a screw head 16 and a shank part 18 . The head 12 and the cutting part 14 are connected to each other in the region of the seam 20 by means of an extrusion process.

[0034] figure 2 shown in figure 1 The head 12 of the double steel bolt 10 shown in. The screw head 16 and the shank part 18 are clearly visible here. The screw head 16 and the shank part 18 are arranged concentrically to the central longitudinal axis 22 . On the side facing away from the screw head 16 , the head 12 has a cup-shaped recess 24 . The bowl-shaped recess has a depth 26 which extends in the axial direction, ie in the direction of the longitudinal axis 22 . Also in figure 2 In this case, the bowl-shaped recess 24 has a diameter 28 . The shaft portion 18 of the head 12 is configured as a cylinder and has a diameter 30 . Preferably, the bowl-shaped rece...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a two-steel screw comprising a top part and a cutting part, the top part consisting of a corrosion-resistant material and having a screw head and a shank portion, and the cutting part consisting of a hardenable material, the top part being permanently connected to the cutting part in the region of the shank portion by way of extrusion. Furthermore, the invention relates to a method for the production of such a screw.

Description

technical field [0001] The invention relates to a double steel bolt with a head and a cutout, wherein the head is made of a corrosion-resistant material and has a bolt head and a shank part, and wherein the cutout is made of a hardenable material. [0002] Furthermore, the invention relates to a method for producing a double steel bolt comprising a head made of a corrosion-resistant material and a cutout made of a hardenable material, the head having a bolt head and a rod part. Background technique [0003] Such double-steel bolts and methods for producing such double-steel bolts are known several times in the prior art. It is therefore known, in particular in construction technology, to provide double steel bolts which have a rust-resistant head for the building exterior so that the head does not corrode or rust. Furthermore, double steel bolts known in the prior art have a hardened part with a steel drill point on the cut so that the outer side of the double steel bolt i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16B25/00B21K25/00B21K1/44
CPCB21K25/00B21K1/44F16B25/0094B21K1/56F16B25/103F16B35/02F16B35/00
Inventor 迪特尔·格罗特曼托拜厄·克特纳
Owner EJOT GMBH & CO KB