Servo-type machine tool working parts temperature field measuring machine

Abstract

The invention relates to a temperature field measuring machine for working parts of a servo type machine tool. A probe component comprises a base platform, a vertical rotating mechanism, a horizontal rotating mechanism and a sensor assembly, wherein the vertical rotating mechanism is fixedly connected to the base platform, the horizontal rotating mechanism is fixedly connected to the vertical rotating mechanism, and the sensor assembly is connected to the horizontal rotating mechanism. A large positioning component comprises a vertical transmission mechanism, a horizontal transmission mechanism and a front-and-back transmission mechanism, wherein the front-and-back transmission mechanism is connected with the base platform and connected with the vertical transmission mechanism through the horizontal transmission mechanism, and the vertical transmission mechanism is fixedly connected to a base component. The temperature field measuring machine can be used for measuring a temperature field in a space, meanwhile positioning of a measured object is carried out in two steps, requirements for accuracy of the transmission mechanisms are lowered, and the temperature field measuring machine is used for measuring the temperature field of the working parts of the servo type machine tool when the servo type machine tool is operated.

Description

technical field [0001] The invention relates to a temperature field measuring machine for working parts of a machine tool, in particular to a measuring machine for measuring the temperature field of the working parts of a servo machine tool when it is working. Background technique [0002] The methods of temperature measurement can be divided into two categories: contact and non-contact temperature measurement. The contact temperature measurement method needs to fully contact the sensor with the measured object during measurement. Generally, the measured result is the temperature reflected by the sensor when the measured object and the temperature sensor reach temperature equilibrium. When using the contact temperature measurement method, there will be some interference to the temperature of the measured object, and the contact effect between the sensor and the measured object directly affects the measurement accuracy. At the same time, the contact temperature measurement m...

AI Technical Summary

Problems solved by technology

When using the contact temperature measurement method, there will be some interference to the temperature of the measured object, and the contact effect between the sensor and the measured object directly affects the measurement accuracy

At the same time, the contact temperature measurement method also has the following problems: when measuring the temperature field, a large number of sensors are arranged on the measured object, which will have a negative impact on the normal operation of the measured object; The arrangement of the sensor will affect the measurement effect of the sensor

In general, the non-contact temperature measurement method has good dynamic response characteristics, but it will be affected by the surface state of the measurement object or the physical parameters of the measurement medium.

Among the non-contact temperature measurement methods used, infrared handheld thermometers and infrared thermal imaging cameras are the most representative. Handheld infrared thermal imaging cameras cannot control the distance between the infrared thermal imaging camera and the measured object to ensure that the measured object is within the effective measurement range. , has a great influence on the measurement accuracy

Infrared thermal imaging cameras have the following shortcomings in temperature field measurement: (1) It is difficult to make an accurate correspondence between the position of the measuring point and the temperature in the measurement results. The measured field data is expressed in the form of pictures. To form an accurate temperature digital field Requires a lot of pattern recognition processing

(2) Infrared thermal imaging cameras can only measure the temperature field of the plane, it is difficult to measure the temperature in the three-dimensional space, and cannot effectively reflect the temperature field of the space

This mechanism has the following disadvantages: first, the range of motion of the sensor is unreasonable, 360° continuous motion is not required in the horizontal direction, and the 90° measurement range of pitch motion is not enough; second, the reduction ratio of the worm gear mechanism is so large that when measuring the temperature field The measurement cycle is long; third, it is impossible to control the measured object in the effective measurement range of the sensor

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