A single-side clamping straightening device and straightening method for material rods

Abstract

A straightening device and a straightening method of a one-side clamping type of material rods belong to the technical field of straightening equipment. The single-side clamping type straightening device for material rods includes: a hydraulic / pneumatic cylinder driving device connected to an upper pressing plate for driving the upper pressing plate to press down the material rods; an upper pressing plate for pressing down the material rods; a base, The fixed setting is used to support the lower pressing plate; the lower pressing plate is fixedly supported on the base, and is used for cooperating with the upper pressing plate when the upper pressing plate presses down the material rod; a set of fixture components is provided on one side for clamping The clamping end of the material rod is held; the clamp assembly supports the platform, which is driven by a driving mechanism and can realize linear stepping movement. It can avoid additional deformation of the material bar due to extra force or repeated force, and reduce the occurrence of cold work hardening. The appearance of the steel bar during the whole straightening process is only slightly scaled, without extrusion deformation, and the integrity of the steel bar is obviously protected.

Description

technical field [0001] The invention belongs to the technical field of straightening equipment, in particular to a single-side clamping type straightening device and a straightening method for a material rod. Background technique [0002] Material rods include wire rods, wire rods, steel bars, threaded steel bars, etc. Tensile tests on wire rods, coiled rods, and threaded bars need to be written in the report with multiple mechanical performance indicators such as yield strength, tensile strength, and elongation after fracture. Yield strength is a very important mechanical performance index when doing tensile tests on wire rods and coiled rebars. [0003] According to the GBT 228.1 tensile test standard for metal materials, it is necessary to ensure that the wire rod and coil threaded steel bar are straight before doing the tensile test. In order to obtain a satisfactory straightness, there are usually two types of manual straightening or mechanical straightening for the sam...

AI Technical Summary

Problems solved by technology

That is to say, in order to achieve the best straightening effect of the wire rod and coiled threaded steel bar in the tensile test, it must be ensured that the yield platform is not damaged during the process of the wire rod and coiled threaded steel bar from bending to straight, otherwise even if Straightened wire rods and coiled rebars will have no yield platform in the tensile test, resulting in distortion of the yield strength

[0010] At present, the method of straightening wire rods in most steel factories is to use the straightening station of the upsetting testing machine to manually straighten the wire rods. The efficiency is slow and the straightening effect is not ideal, and it is easy to straighten. Yield platform is not obvious during the process

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