Intelligent weighing device for transmission shaft assembly

Abstract

An intelligent weighing device for a transmission shaft assembly belongs to a special measuring tool for off-line detection of the transmission shaft assembly and is characterized in that an electronic scale, an alarm, a first workpiece sensor and a controller are arranged on a rack, two shaft rod supports are symmetrically arranged on a weighing platform of the electronic scale left and right, and first notches are formed in the two shaft rod supports respectively; the detection end of the first workpiece sensor is opposite to the space between the two first notches; when the first workpiece sensor detects the shaft rod of the transmission shaft assembly, the controller repeatedly reads the real-time weight data of the electronic scale, judges that the current data is the actual weight of the transmission shaft assembly, carries out calculation according to the pre-stored data and tolerance, judges whether the weight of the current detected transmission shaft assembly is within a specified tolerance range or not, and sends the judgment result to the electronic scale. The weighing result is directly calculated by the controller, and the step of manual calculation is omitted, so that the weighing result is accurate, and the weighing efficiency is improved.

Description

technical field [0001] The invention relates to a special measuring tool for off-line detection of a transmission shaft assembly, in particular to an intelligent weighing device for a transmission shaft assembly. Background technique [0002] According to the technical requirements of the OEM, after the drive shaft assembly is greased and assembled off the assembly line, the assembly must be weighed. The quality of the equipment is qualified. The weighing of the existing transmission shaft assembly uses an electronic scale with a display screen. The operator puts the transmission shaft assembly on the weighing platform and reads the measured transmission shaft assembly through the visual display screen. The weight data, combined with the design weight process parameters of this type of drive shaft assembly, calculate whether the weight of the drive shaft assembly is qualified; the disadvantages of the existing weighing process are: [0003] 1) Manual calculation of the weig...

AI Technical Summary

Problems solved by technology

[0003] 1) Manual calculation of the weight tolerance of the transmission shaft assembly is more prone to errors. After calculation, if the weight of a certain sampling piece in the finished product to be packed is out of tolerance, it must be re-weighed, and the weight of the unqualified transmission shaft assembly If it is detected by the main engine factory, it will lead to batch returns and cause heavy losses to the unit

[0004] 2) During the weighing process, since the surface of the weighing platform is a smooth plane, the heavier transmission shaft assembly is easy to roll when placed on the smooth weighing platform. Once the transmission shaft assembly falls from the weighing platform, the workpiece will be damaged , It is also easy to hit the operator's limbs and cause work-related injuries

Moreover, there is no structure on the existing weighing platform to limit the position of the transmission shaft assembly. The position of the operator placing the transmission shaft assembly on the weighing platform changes each time, which may easily cause the measurement results of the weighing platform to be unbalanced due to pressure. Inaccurate

[0005] 3) The transmission shaft assembly requires 100% weighing inspection, which leads to high labor intensity in this process. Although the operation manual requires that the transmission shaft assembly be handled gently on the weighing platform, manual operation has uncertainty. The objective problem is that since the electronic scale is a precision measuring instrument, once the transmission shaft assembly hard contacts the weighing platform, it will easily lead to inaccurate sensor accuracy in the electronic scale, which will make the measurement result unreliable

[0006] 4) The weighed drive shaft assembly also needs to be marked with a color code to avoid confusion between qualified parts and unqualified parts. In the existing process, the operator uses a marker to draw on the shaft of the drive shaft assembly. The qualified parts are marked with a line, but the marking line of the qualified parts on each shaft is different in length, position, and straight, which is neither standardized nor beautiful. The main engine factory requires improvement as soon as possible.

[0007] 5) According to the different models, there are various models of the existing transmission shaft assemblies, and the weight parameters corresponding to different types of transmission shaft assemblies are also different. The label is pasted on the designated position on the drive shaft shaft for display, which is convenient for later quality traceability; in mixed production, the operator must first determine the model of the drive shaft assembly according to the content of the label on the drive shaft assembly, and then compare The weight process parameter table of the transmission shaft assembly, find out the design weight process parameters of the drive shaft assembly of this type, and then carry out the weighing calculation, which puts forward a higher requirement for the operator's quick reading and identification ability and delayed memory ability Requirements not only increase the difficulty of weighing operations, but also often cause inaccurate weighing results due to model confusion, requiring re-calibration and weighing, which increases labor time and reduces weighing efficiency

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