Some problems that should be paid attention to in coordinate needle detection

Because CMM needle is widely used in industrial production measuring equipment, the use frequency is higher and higher, in industrial production, many enterprises almost use high-precision measuring equipment, the use frequency is higher and higher, many enterprises rely on product quality review CMM needle, CMM needle measurement mold also need to pay attention to, today small explanation CMM needle need to pay attention to some matters:

1. When testing mold products with three coordinates, it is necessary to test according to the operating standards of three coordinates testing, which is relatively basic and important. Before inspecting the workpiece, we should check the position of the probe to see if the probe is at the origin. If the probe is not at the origin position, we must remember to return it to the origin position. Secondly, when detecting the die workpiece, we should check the space of the workbench. Due to the large volume of most die workpiece, wide operating workpiece should be set aside in the operation process to avoid damage to the machine and workpiece detection accuracy when the machine encounters the workpiece in the operation process.

Second, install the parts in the correct way when testing. Also pay attention to find the mold reference point. The reference point must not be wrong. If the reference point is not clear, testing is futile.

Third, when testing the mold on the machine, remember to test and wipe the machine body. When the workpiece of the mold is taken out, there will be more or less some dirt on it. At this time, for the accuracy of detection, we must wipe the mold itself before the machine to ensure the accuracy of detection.

4. When testing the mold, the operator should also pay attention. When detecting large die workpiece, remember to move the workpiece from the machine in time after detection. CMM needle is a precision measuring machine. Long-term pressing of large workpieces will also affect the number of machines, which may lead to inaccurate detection accuracy in the future.

Safety precautions of CMM:

1. Before lifting the workpiece, the probe should return to the origin of coordinates to reserve a large space for the lifting position; The workpiece shall be lifted smoothly and shall not collide with any part of the CMM.

2. Install the correct parts and ensure that the isothermal requirements of the parts and measuring machine are met before installation.

3. Establish the correct coordinate system to ensure that the established coordinate system conforms to the requirements of the drawing and the measurement data is accurate.

4. When programming automatic operation, to prevent the probe and workpiece dry, so pay attention to increase the inflection point.

5. For some large and heavy molds, inspection tools should be timely lifted down the workbench after measurement to prevent the workbench from being in load-bearing state for a long time.

6. Personnel without training and qualification are not allowed to use CMM.

7. Before starting the machine every day, first check whether the air supply pressure meets the requirements, and then open the control cabinet: air supply pressure ≥0.65Mpa, machine pressure ≥0.4Mpa.

8. When the height of oil-water mixture in the triplet cup exceeds 5 mm, manual drainage is required. If the air supply pressure of the machine is normal, and the pressure at the triplet can not be adjusted to the normal value, the filter element needs to be replaced.

9. CMM application environment: temperature is 20±2℃, relative humidity is 40-75%.

10. No articles shall be placed in the guide rail of the machine. Do not touch the working face of the guide rail directly with your hands. Before starting the machine every day, clean the three-axis guide rail surface with high spinning cotton cloth without water alcohol, and operate the machine after the guide rail surface is dry. Do not use alcohol to clean the paint surface and grating ruler.

11. Press the slow button when approaching the mining point under manual operation conditions.

12. Rotate probe, check probe, automatically replace probe, operating procedures and other operations to ensure probe operation route barrier-free.

13. In the second run, the program should reduce the speed to 10~30%, and pay attention to whether the running track meets the requirements.

14. When moving parts, first move the probe to a safe position, pay attention to the workpiece can not hit the work surface, especially the guide surface of the machine.

15. Do not install any software unrelated to CMM to ensure the reliable operation of the system.

16. Air conditioning should be opened 24 hours a day, and the maintenance of air conditioning should be carried out in autumn to ensure the normal use of CMM.