Novel measurement method for cold heading force and force measurement device applying method

Abstract

The invention discloses a novel measurement method for cold heading force. The method comprises the following steps that the cold heading force generated by a cold heading machine is applied to one end of a double-rod hydraulic cylinder piston rod, the other end of the piston rod is pushed to extend outwards, the end face, extending outwards, of the piston rod can act on a measurement instrument,and a measurement value is obtained and written as Fc; oil liquid in a double-rod hydraulic cylinder can flow out from an oil outlet of one side under the effect of the cold heading force, an overflowvalve is connected to the oil outlet of the side through a high pressure pipe and can be subjected to oil liquid pressure intensity, and an overflow pressure is obtained and is written as Py; a calculation formula of the cold heading force is shown as Fd=Py*S+Fc, wherein Fd is the cold heading force of the cold heading machine, Py is the overflow pressure of the overflow valve, S is the area of an end face of the double-rod hydraulic cylinder piston, and Fc is a value of force measured by the measurement instrument. The novel measurement method for the cold heading force has the following advantages that the measurement instrument can measure the cold heading force of the cold heading machine, and accordingly the problem is solved that in the prior art, the cold heading force of a large-sized cold heading machine can be calculated merely with the help of theory.

Description

technical field [0001] The invention relates to a novel method for measuring cold heading force and a force measuring device using the method. Background technique [0002] Multi-station cold heading forming machine is a professional machine tool used in the standard parts industry to produce various fasteners and special-shaped parts. Its efficiency and automation level are higher than other machine tools for producing such parts. At the same time, as the demand for fasteners and special-shaped parts in various industries increases, the performance requirements for multi-station cold heading forming machines also increase accordingly. [0003] The cold heading force generated by a large cold heading machine can reach nearly 400 tons, that is, a cold heading force of nearly 4000kN is generated. The maximum measurement value of the traditional piezoelectric sensor is 30kN, which is far smaller than the cold heading force. Therefore, it is difficult for traditional piezoelec...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a new method for measuring cold heading force, which can solve the problem that the range range of existing sensors is difficult to cover the cold heading force of cold heading machines

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