one、preface

With the development of mold manufacturing industry, the development of mold measurement technology has also followed suit. Different measurement techniques and measuring equipment have emerged according to the different characteristics of mold manufacturing. From digital surveying involved in the early stages of mold design, to measurement of mold processing procedures, mold repair measurement, mold acceptance measurement, and later mold repair measurement; High precision measuring equipment is ubiquitous, ranging from small-sized electronic molds to large molds in the automotive and aerospace industries. However, as the precision requirements for products in the industry continue to increase, precision instruments cannot be affected by external vibrations, which can affect the normal operation of the equipment. Traditional low-frequency isolation measures are to dig grooves and make isolation trenches to effectively reduce the impact of surrounding large punch press vibrations on coordinate equipment. However, the actual operation is quite complicated, and the effect is not particularly effective. It is obvious that it cannot meet the accuracy of three coordinate equipment. Therefore, a series of shock absorbers have been developed. Through the vibration reduction device, the surrounding vibration can be effectively isolated from the three coordinate system, ensuring that the equipment is not disturbed and operates normallydo.

This article discusses the interference of external vibration sources on the three coordinates of a certain plastic company，The measuring needle will jump as a result，Affects measurement valuesAs a case study. By analyzing and studying the sources of machine vibration, corresponding isolation and control measures are proposed. Provide technical support for vibration isolation processing in the measurement industry.

twoSummary of Vibration Effects

The environment inside the factory: As the company mainly produces plastic products, there are lathes and mold rooms in the workshop. During the operation of the equipment, noise and vibration will be transmitted to the coordinate measuring machine through the air and ground. Thereby affecting its accuracy.

The environment outside the factory building: Due to the fact that the factory building is located on the side of the main road and there is a bridge nearby, when large trucks pass by, the ground vibration of the factory building will be clearly felt. The needle of the device will swing. Causing inaccurate measurement accuracy.

3、 Vibration detection plan and results

3.1Using vibration noise spectrum testing instruments to detect machine tools and mold rooms in the workshop，Simulating normal operationDuring the process，Multiple point measurements of vibration sourcesThe obtained data.

3.2By simulating the vibration impact data of large heavy-duty trucks passing through the main road on the workshopThe data from multiple probing tests are as follows.

4、 Vibration impact control plan and effectiveness

4.1 From the above data analysis, it can be concluded that the measuring machine is greatly affected by external vibration sources, and as a high-precision measuring instrument in the measurement industry, the three coordinate system has an accuracy ofumLevel. It is very sensitive to low-frequency vibrations, so we must add a set of vibration isolation devices to protect the measuring machine itself from external interference while working normally. There are two common ways to use vibration isolation devices.

Generally speaking, traditional three coordinate vibration isolation devices mainly use isolation grooves and fillers to weaken the transmission of vibration energy and achieve the protective effect on the equipment.

4.1.2) With the progress of the times and the increasing demands, traditional isolation tanks still have many drawbacks. For example, the accuracy cannot be achieved, the operation is inconvenient, and the flexibility is not strong. Furthermore, shock absorbers were introduced from abroad to compensate for the shortcomings of traditional vibration isolation devices.

The following is the treatment plan for Hexagon to use a new type of air floating vibration damper as an isolation device to ensure its normal and effective operation.

The above is after installing our shock absorberFor the measuring machine on the shock absorber platform and the bottom groundTwo detection probes simultaneously test the vibration source transmitted from the workshop，The data obtained is as follows：

Figure 3: Measured Data

Note: The green part represents the vibration value of the measuring machine ground without vibration reduction, and the blue part in the figure represents the vibration value of the measuring machine surface on the upper part of the shock absorber.

Based on the comparison of data values, we have attenuated the majority of low-frequency vibrations inside our vibration reduction device. The vibration transmitted to the coordinate system is not sufficient to affect the accuracy of the coordinate system at the um level. After the subsequent operation of the measuring machine, there has never been a situation where the accuracy does not meet the standard due to normal operation.

5、 Summary

5.1) Conduct testing and analysis on the accuracy issue of vibration affecting the three coordinate measurement components of a certain manufacturer. The results show that in the three coordinate room affected by vibration, whether it is the workshop machine tool mold or the large truck passing through the main lane, it will have a significant impact on the measurement accuracy of the three coordinates.

5.2) Through on-site analysis, it was found that the main source affecting accuracy is still the low-frequency vibration generated by the impact of equipment operation on the ground, which is transmitted to the three coordinate base through the ground and causes the three coordinate needle to swing during operation.

6、 Product information and installation instructions

Please inquire and request

7、 On site case pictures

Hengshile Machinery Technology, on-site installation. Three dimensional anti vibration pad for imaging instrument, three-dimensional anti vibration pad, machine tool shock absorber, Hexagon three coordinate anti vibration pad
Vibration pad manufacturer