Material bar single-side clamping type straightening device and straightening method

Abstract

The invention discloses a material bar single-side clamping type straightening device and straightening method, and belongs to the technical field of straightening equipment. The material bar single-side clamping type straightening device comprises a hydraulic / pneumatic cylinder driving device connected with an upper pressing plate and used for driving the upper pressing plate to downwards press a material bar, the upper pressing plate used for pressing the material bar downwards, a base fixedly arranged and used for supporting a lower pressing plate; the lower pressing plate fixedly supported on the base and used for being matched with the upper pressing plate when the upper pressing plate downwards presses the material bar, a clamp assembly and a clamp assembly supporting platform; one set of clamp assembly is arranged at one side, and the clamp assembly is used for clamping the clamping end of the material bar; and the clamp assembly supporting platform is driven by a driving mechanism and can achieve linear stepping movement. The material bar can be prevented from being subjected to extra force or repeated force to cause extra deformation, cold hardening is reduced, only slight oxide skin falls on the appearance of a steel bar in the whole straightening process, extrusion deformation is avoided, 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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