阅读说明：本技术 一种大齿轮温度场的检测装置及检测方法 (Detection device and detection method for temperature field of large gear ) 是由 林虎 杨国梁 薛梓 于 2021-06-24 设计创作，主要内容包括：本发明公开了一种大齿轮温度场的检测装置和方法,包括大齿轮和温度测量传感器；大齿轮为圆柱形；温度测量传感器设有若干个,大齿轮上设有若干个预留钻孔,若干个温度测量传感器均匀分布在大齿轮的外表面或固定于内预留钻孔中；温度测量传感器与大齿轮的预留钻孔通过螺纹可拆卸连接。方法为：温度传感器与大齿轮外表面未接触之前,温度传感器探头通伸出；与大齿轮外表面接触后,同时传感器探头被大齿轮压回,保持与大齿轮接触并测量大齿轮表面温度和内部温度。本发明的大齿轮温度场的检测装置和方法,实现了大齿轮内外多点分布温度的实时检测,为大齿轮等温及热变形误差补偿提供了基础。(The invention discloses a device and a method for detecting a temperature field of a gearwheel, which comprises the gearwheel and a temperature measuring sensor; the bull gear is cylindrical; the temperature measuring sensors are provided with a plurality of reserved drill holes, and the temperature measuring sensors are uniformly distributed on the outer surface of the large gear or fixed in the reserved drill holes; the temperature measuring sensor is detachably connected with the reserved drill hole of the large gear through threads. The method comprises the following steps: before the temperature sensor is not contacted with the outer surface of the bull gear, the probe of the temperature sensor extends out; after contacting the outer surface of the large gear, the sensor probe is pressed back by the large gear, keeps contacting with the large gear and measures the surface temperature and the internal temperature of the large gear. The device and the method for detecting the temperature field of the bull gear realize real-time detection of multipoint distribution temperature inside and outside the bull gear, and provide a foundation for compensation of isothermal and thermal deformation errors of the bull gear.)

1. A detection device for a temperature field of a gearwheel is characterized by comprising the gearwheel and a temperature measurement sensor;

wherein the bull gear is cylindrical; the temperature measuring sensors are provided with a plurality of reserved drill holes, and the temperature measuring sensors are uniformly distributed on the outer surface of the large gear or fixed in the reserved drill holes;

the temperature measuring sensor is detachably connected with the reserved drill hole of the large gear through threads.

2. The apparatus for detecting the temperature field of a gearwheel of claim 1, wherein the temperature measuring sensor is a platinum resistance temperature measuring sensor.

3. The device for detecting the temperature field of the gearwheel of claim 2, wherein the temperature measuring sensor comprises a shell, a temperature sensor probe, a heat insulation tape and a heat conduction material;

the temperature sensor probe is embedded in the shell, one end of the temperature sensor probe is exposed out of the shell, the heat insulation adhesive tape is located between the shell and the temperature sensor probe, and the heat insulation adhesive tape wraps the temperature sensor probe; the heat conduction material is coated on one end of the temperature sensor probe exposed outside the shell.

4. The apparatus of claim 3, wherein the temperature measuring sensor further comprises a spring fixed to an outer surface of the housing.

5. The device for detecting the temperature field of the bull gear according to claim 3, wherein the temperature measuring sensor further comprises a magnet fixed to the outer surface of the housing, and the magnet is magnetically attached to the bull gear.

6. The apparatus for detecting the temperature field of a gearwheel of claim 3, wherein the heat conducting material is silicone grease or liquid gold.

7. A method for detecting the temperature field of a gearwheel, which is characterized in that the detection is carried out by using the detection device of any one of claims 1 to 6;

the detection method comprises the following steps: the temperature sensor probe is tightly attached to the outer surface of the large gear for detection; before the temperature sensor is not contacted with the outer surface of the bull gear, the probe of the temperature sensor extends out; after contacting the outer surface of the bull gear, the sensor probe is pressed back by the bull gear, remains in contact with the bull gear and measures the surface temperature.

Technical Field

The invention relates to the technical field of temperature detection, in particular to a detection device and a detection method for a temperature field of a large gear.

Background

With the continuous improvement of manufacturing and processing technologies, the processing precision of the gear is higher and higher, and higher requirements are also put forward on precision measurement technologies. The temperature is a main influence quantity of the environment, and has a large influence on the state of the precision geometry measuring apparatus and the measurement result of various deviations of the gears. Particularly, in the high-precision measurement occasion, the temperature field changes of the environment and the gear must be detected in real time, the metal material of the gear is subjected to thermal deformation caused by the temperature changes, so that the deviation of the geometric dimension is caused, and the influence of the thermal deformation is more obvious for the large gear. Internationally, 20 ℃ is generally used as a standard temperature for geometric measurement, and therefore, measurement of geometric deviation should be performed under this temperature condition when performing gear precision measurement. In general, a gear to be measured needs to be placed in a constant temperature laboratory for isothermal temperature, so that the temperature difference between the temperature and the ambient temperature is less than 0.5 ℃, and the gear with the conventional size can be placed for 8 hours generally, but for a large gear, the isothermal time is longer due to the large size and the large internal and external temperature difference,

therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a device and a method capable of real-time detecting the multi-point distribution temperature inside and outside the large gear, thereby ensuring the accuracy of the geometric dimension measurement.

Disclosure of Invention

In view of this, the present invention provides a device and a method for detecting a temperature field of a bull gear.

In order to achieve the purpose, the invention adopts the following technical scheme:

a detection device for a temperature field of a gearwheel comprises the gearwheel and a temperature measurement sensor;

wherein the bull gear is cylindrical; the temperature measuring sensors are provided with a plurality of reserved drill holes, and the temperature measuring sensors are uniformly distributed on the outer surface of the large gear or fixed in the reserved drill holes;

the temperature measuring sensor is detachably connected with the reserved drill hole of the large gear through threads.

Preferably, the temperature measuring sensor is a platinum resistance temperature measuring sensor.

Adopt above-mentioned preferred scheme's beneficial effect to lie in: according to the scheme, the accurate measurement of the temperature distribution inside and outside the large gear along the circumferential direction can be realized, and the influence of thermal deformation on the measurement of the geometric dimension is eliminated. The internal temperature sensor is detachably connected through threads, so that inconvenience caused by the protrusion of the sensor in the process of transporting and adjusting the large gear is eliminated. The platinum resistance temperature sensor can eliminate measurement errors caused by the resistance of a longer sensor conductor, and high-precision temperature measurement is realized.

Preferably, the temperature measuring sensor comprises a shell, a temperature sensor probe, a heat insulation adhesive tape and a heat conduction material;

the temperature sensor probe is embedded in the shell, one end of the temperature sensor probe is exposed out of the shell, the heat insulation adhesive tape is located between the shell and the temperature sensor probe, and the heat insulation adhesive tape wraps the temperature sensor probe; the heat conduction material is coated on one end of the temperature sensor probe exposed outside the shell.

Adopt above-mentioned preferred scheme's beneficial effect to lie in: the heat insulation adhesive tape defined by the invention wraps the temperature sensor probe, so that the influence of the air temperature in the drill hole is avoided, and the internal temperature of the surface of the gear at the tail end of the drill hole is only measured. The heat conduction material is coated on one end, exposed outside the shell, of the temperature sensor probe, so that good contact heat conduction of the tail end of the probe and the conical surface at the inner end of the drill hole is guaranteed, and accurate measurement of temperature inside the large gear is achieved.

More preferably, the temperature measuring sensor further includes a spring fixed to an outer surface of the housing.

More preferably, the temperature measurement sensor further comprises a magnet fixed to the outer surface of the housing, and the magnet is connected to the large gear in a magnetic attraction manner.

Adopt above-mentioned preferred scheme's beneficial effect to lie in: the invention adopts a fixing mode of magnetic attraction, can realize the rapid measurement of the temperature of the outer surface of the gearwheel, and greatly improves the measurement efficiency compared with a pasting mode.

Preferably, the heat conducting material is silicone grease or liquid gold.

The beneficial effect of adopting above-mentioned preferred scheme lies in: the tail end of the hole left after drilling is uneven and is similar to a conical surface, so that the contact area between the temperature probe and the tail end of the hole is small and uneven.

The invention also provides a detection method of the temperature field of the gearwheel, which adopts the detection device to detect;

the detection method comprises the following steps: the temperature sensor probe is tightly attached to the outer surface of the large gear for detection; before the temperature sensor is not contacted with the outer surface of the bull gear, the probe of the temperature sensor extends out; after contacting the outer surface of the large gear, the sensor probe is pressed back by the large gear, keeps contacting with the large gear and measures the surface temperature and the internal temperature of the large gear.

The invention has the beneficial effects that: the device and the method for detecting the temperature field of the bull gear realize real-time detection of multipoint distribution temperature inside and outside the bull gear. The external magnetic attraction fixing mode of the large gear greatly improves the measurement efficiency; the internal thread fixing mode of the large gear facilitates the assembly and disassembly of the internal temperature sensor. The temperature of the central point in the large gear is accurately measured by wrapping the large gear with a heat-insulating adhesive tape and coating a heat-conducting material. The method provides a foundation for compensation of isothermal and thermal deformation errors of the large gear.

Drawings

FIG. 1 is a schematic view of a temperature field detection device for a bull gear according to the present invention;

FIG. 2 is a first schematic structural diagram of a temperature measuring sensor of the detecting device for a temperature field of a gearwheel provided by the present invention;

FIG. 3 is a schematic structural diagram of a temperature measuring sensor of the detecting device for a temperature field of a gearwheel according to the present invention;

in the drawings, the structures represented by the reference numerals are listed below:

1-big gear, 2-temperature measuring sensor, 21-shell, 22-temperature sensor probe, 23-heat insulation tape, 24-heat conduction material, 25-spring, 26-magnet.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

A detection device for a temperature field of a gearwheel comprises a gearwheel 1 and a temperature measurement sensor 2;

wherein, the gearwheel 1 is cylindrical; the temperature measuring sensors 2 are provided with a plurality of reserved drill holes, the large gear 1 is provided with a plurality of reserved drill holes, and the temperature measuring sensors 2 are uniformly distributed on the outer surface of the large gear 1 or fixed in the reserved drill holes;

the temperature measuring sensor 2 is detachably connected with the reserved drill hole of the large gear 1 through threads.

In one embodiment, the temperature measuring sensor 2 is a platinum resistance temperature measuring sensor.

In one embodiment, the temperature measurement sensor includes a housing 21, a temperature sensor probe 22, a thermal tape 23, and a thermally conductive material 24;

the temperature sensor probe 22 is embedded in the casing 21, one end of the temperature sensor probe 22 is exposed out of the casing 21, the heat insulation tape 23 is located between the casing 21 and the temperature sensor probe 22, and the heat insulation tape 23 wraps the temperature sensor probe 22; a thermally conductive material 24 is coated on the end of the temperature sensor probe 22 exposed outside the housing 21.

In another embodiment, the temperature measuring sensor 2 further comprises a spring 25, the spring 25 being fixed to the outer surface of the housing 21.

In another embodiment, the temperature measuring sensor 2 further comprises a magnet 26, the magnet 26 is fixed on the outer surface of the housing 21, and the magnet 26 is magnetically connected with the large gear 1.

In one embodiment, the thermally conductive material 24 is silicone grease or liquid gold

The detection method of the temperature field of the large gear adopts the detection device to detect;

the temperature sensor probe is tightly attached to the outer surface of the large gear for detection;

before the temperature sensor is not contacted with the outer surface of the bull gear, the probe of the temperature sensor extends out; after contacting the outer surface of the bull gear, the sensor probe is pressed back by the bull gear, remains in contact with the bull gear and measures the surface temperature.

The method for detecting the internal temperature of the large gear mainly comprises two methods, wherein the first method is to measure the temperature of the position of a thickness center point of a gear ring along the radial direction of the excircle of the gear. And 2, measuring the temperature of the position at half depth of the thickness of the gear ring from the plane of the upper end of the gear to the inside of the solid.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.