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Method and apparatus for production of helical springs by spring winding

A helical spring and winding spring technology, which is applied in the field of spring winding machines, can solve uneconomical problems and achieve high measurement accuracy

Active Publication Date: 2011-11-09
WAFIOS AKTIENGES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This process is very uneconomical, especially in the case of long springs, since each spring consumes a relatively large length of wire and must be removed when the finished spring is found to be out of tolerance. throw away

Method used

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  • Method and apparatus for production of helical springs by spring winding
  • Method and apparatus for production of helical springs by spring winding
  • Method and apparatus for production of helical springs by spring winding

Examples

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Embodiment Construction

[0045] exist figure 1 The schematic diagram in shows the main elements of a CNC spring winding machine 100 based on a design known per se. The spring coiler 100 has a conveying device 110 which is equipped with conveying rollers 112 and which conveys a continuous wire section of wire 115 which comes from a wire supply and passes through a guide unit at a digitally controlled conveying rate The curve enters into the region of the shaping device 120 . With the help of digitally controlled tools, the wire is shaped in a forming device to form a helical spring. The tool comprises two winding pins 122 , 124 arranged offset at an angle of 90° and radially aligned with respect to the central axis 118 (position corresponding to the desired spring axis) and intended to determine the diameter of the helical spring. During the setting process, the position of the winding pin can be changed for the basic adjustment of the spring diameter along the line of motion shown in dashed lines an...

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Abstract

A method and an apparatus for production of helical springs by spring winding. The method of producing helical springs by spring winding with a numerically controlled spring winding machine includes feeding a wire, controlled by an NC control program, through a feed device to a forming device of the spring winding machine, forming a helical spring from the wire with tools of the forming device, defining a desired nominal geometry of the helical spring and an NC control program adapted to produce the nominal geometry, measuring an actual position of a selected structural element of the helical spring relative to a reference element at least one measurement time, which occurs after a start and before an end of production of the helical spring in a measurement area which is at a finite distance from the forming device in a longitudinal direction of the helical spring, wherein the distance is less than an overall length of the finished helical spring, comparing the actual position with a nominal position of the structural element for the measurement time to determine a current position difference, which represents a difference between an actual position and the nominal position at the measurement time, and controlling the position by at least one of the tools of the forming device, which tool determines a pitch of the helical spring as a function of the position difference.

Description

technical field [0001] The invention relates to a method for producing helical springs by winding springs by means of a numerically controlled spring winding machine according to the preamble of claim 1 , and a spring winding machine suitable for carrying out said method. Background technique [0002] Helical springs are machine elements that are in great demand and of various designs in many fields of application. Coil springs (also known as coiled torsion springs) are usually made of spring wire and are in the form of tension springs or compression springs depending on the load placed on them during use. For example, compression springs, especially load-bearing springs, are in great demand in motor vehicle construction. In particular, the spring properties are influenced by sections with different pitches or different pitch profiles. For example, in the case of compression springs, it is common to have a central section of greater or lesser length comprising a constant p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21F35/00
CPCB21C51/00B21F3/02B21F35/00
Inventor V.卡尔考
Owner WAFIOS AKTIENGES
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