Method and device for producing fixing or connection components with radial outer contours, in particular screws or threaded bolts

A technology for fastening connectors and outer contours, applied in the direction of connecting components, threaded fasteners, bolts, etc., can solve the problem of very expensive acquisition and maintenance of machine systems, and achieve the effect of high mechanical load-carrying capacity

Inactive Publication Date: 2010-03-03
SIEBER FORMING SOLUTIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The machine systems required to manufacture threaded screws are very expensive to acquire and maintain

Method used

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  • Method and device for producing fixing or connection components with radial outer contours, in particular screws or threaded bolts
  • Method and device for producing fixing or connection components with radial outer contours, in particular screws or threaded bolts
  • Method and device for producing fixing or connection components with radial outer contours, in particular screws or threaded bolts

Examples

Experimental program
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Embodiment Construction

[0038] specific implementation plan

[0039] exist figure 1 The processing stages I to IV according to the invention for the production of a hexagon socket head cap screw, shown in simplified form, are carried out in a multistage press designed as a three-stage press. The multistage press (not shown in more detail) has a construction known per se, comprising a frame with a movable slide 5 and a stationary tool holder unit 6 . Furthermore, a shearing tool 1 (processing stage I) is arranged in the multistage press together with two extrusion die tools 2, 3 (processing stages II and III) and a thread pressing tool 4 (processing stage IV). The two extrusion die tools 2 and 3 each comprise a head die 2a, 3a and a rod die 2b, 3b. The headforms 2a and 3a are arranged in the movable slide block 5 and the opposite rod forms 2b and 3b are arranged in the stationary tool holder unit 6, a reverse arrangement is also possible.

[0040] The wire 7 fed in as starting material is cut to a ...

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PUM

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Abstract

A method of manufacturing fastenings or fasteners with radial outer contours, especially screws or threaded bolts, made of solid metal is performed by a device. The method manufactures the fasteningsor fasteners preferably on a multi-stage press. Several recesses running in an axial direction at a fixed radial distance are formed in the shank-shaped section of a blank. The prefabricated blank with the recesses is inserted into a multi-part split mold within a multi-stage press, whose die stocks have an inner profiling forming the outer contour, and are opened in the starting position, that atthe places where the die stocks are opened, there are the recesses. During the closing movement of the die stocks, at least one radial outer contour is pressed on the shank-shaped section of the blank by radial action of forces, with the recesses preventing material from getting between the die stocks during the pressing process.

Description

technical field [0001] The invention relates to a method for producing a fastening connection or fastener, in particular a screw or a bolt, made of solid metal with a radial outer profile, and a device designed to carry out the method. Background technique [0002] Screws or bolts made of solid metal up to a diameter of M36 are mass-produced in a manner known per se using cold pressing on a multi-stage press. [0003] "Wire" wound on a reel is used as starting material, and the screw blanks are processed through a forming process (compression, calendering, deburring) in a multistage press after appropriate pretreatment (untwisting, smoothing) Production. Several tool units (comprising a punch and die and auxiliary tools) in an individual forming process carried out stage by stage in a defined sequence are arranged in a so-called multistage press. Some processes require eg three pressing stages in order to produce a screw blank from linear material: compression, pre-forming...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/56B21J13/02B21J1/06B21K1/46
CPCB21K27/00B21J9/06B21K1/463B21K1/56B30B7/04B21C23/14B21C23/21B30B11/22
Inventor H·金瑟特
Owner SIEBER FORMING SOLUTIONS
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