CN219511503U - Wall thickness measuring device for resonant cavity - Google Patents

Abstract

The utility model provides a resonant cavity wall thickness measuring device, which comprises a base, an upper fixing seat, a guide post, an upper measuring post, a lower measuring post and a digital caliper, wherein two ends of the guide post are respectively and fixedly connected with the base and the upper fixing seat; above-mentioned resonant cavity wall thickness measuring device, with the one side of the resonant cavity wall that needs to measure with measuring post looks butt down, measuring post is as measuring the zero point down, move and go up measuring post and make it measure post direction slip down at the guide post until with the another side looks butt of resonant cavity wall, digital caliper is according to last measuring post, displacement between the measuring post down, can measure resonant cavity wall thickness, whole measuring process is simple and convenient, need not to cut the resonant cavity, can adapt to the wall thickness measurement of different cavity products moreover, the suitability is more extensive.

Description

Wall thickness measuring device for resonant cavity

Technical Field

The utility model relates to the technical field of resonant cavity wall thickness measurement, in particular to a resonant cavity wall thickness measuring device.

Background

The automobile air inlet resonant cavity is also called as a resonator and a muffler, and is arranged at the front end of an automobile air inlet suction pipe, generally at the position of a vehicle head, and the vehicle head is downward. The air inlet resonant cavity can buffer and stabilize air inlet of the engine, so that air inlet noise is reduced; the air inlet resonant cavity is commonly used in an injection molding production process. Because the resonant cavity is relatively close to the engine, during operation, the influence of vibration with certain frequency and heat dissipation of the engine exists, in order to guarantee the service life of the resonant cavity, the wall thickness of an injection molding part needs to be detected and controlled in the production of the resonant cavity, so that the injection molding wall thickness cannot meet the requirement or is uneven, and the service life of a product is influenced.

At present, a special cavity product wall thickness measuring device is not provided, so that the wall thickness of the resonant cavity is very difficult to measure, and therefore, the wall thickness detection is usually carried out by using a vernier caliper or a micrometer after the resonant cavity is cut and decomposed. The resonant cavity is cut manually, so that the labor is wasted; when the mechanical cutting is adopted, in order to avoid the safety problem of the cutting process, a special fixture is required to be designed and manufactured according to the shape of the resonant cavity, time and labor are wasted, and the detection of the resonant cavity after the cutting belongs to destructive detection and is not suitable for daily detection of normal products.

Disclosure of Invention

Based on this, it is necessary to provide a resonator wall thickness measuring apparatus which is simple to operate, has high measurement accuracy, and is versatile.

The utility model provides a resonant cavity wall thickness measuring device, base, last fixing base, guide post, go up measuring post, down measure post, digital caliper, the both ends of guide post respectively with base, go up fixing base fixed connection, digital caliper slide set up in on the guide post, go up measuring post fixed mounting in on the digital caliper, down measuring post fixed mounting in on the base and with go up measuring post in the Z axle direction relative setting.

In one embodiment, the resonant cavity wall thickness measuring device further comprises a balance component, the balance component comprises a pulley fixing seat, a first fixed pulley, a second fixed pulley, a third fixed pulley, a pull rope and a balancing weight, the pulley fixing seat is detachably arranged at the bottom of the guide post, the first fixed pulley is arranged in the pulley fixing seat, the second fixed pulley and the third fixed pulley are respectively arranged in the upper fixing seat, and the pull rope is sequentially sleeved on the first fixed pulley, the second fixed pulley and the third fixed pulley, and two ends of the pull rope are respectively fixedly connected with the digital caliper and the balancing weight.

In one embodiment, the measuring surfaces of the upper measuring column and the lower measuring column are planar structures.

In one embodiment, the upper measuring column down force is 15 g-20 g.

In one embodiment, the upper measuring column is made of hard alloy material with high hardness and high wear resistance.

In one embodiment, the lower measurement column is made of steel material.

In one embodiment, the pull cord is made of an aramid cord.

In one embodiment, the draw string has a cross-sectional diameter of 0.5mm.

Above-mentioned resonant cavity wall thickness measuring device, through the guide post, go up the measuring post, lower measuring post, digital caliper's cooperation setting, with the one side of the resonant cavity wall that needs to be measured with lower measuring post looks butt, lower measuring post is as measuring the zero point, move and go up the measuring post and make it to measure the another side looks butt of post direction sliding until with the resonant cavity wall downwards at the guide post, digital caliper is according to last measuring post, lower displacement between the measuring post, can measure resonant cavity wall thickness, whole measurement process is simple and convenient, need not to cut the resonant cavity, moreover can adapt to the wall thickness measurement of different cavity products, the suitability is more extensive.

Drawings

FIG. 1 is a schematic diagram of an explosion structure of a device for measuring wall thickness of a resonant cavity according to the present utility model;

FIG. 2 is a schematic diagram of an assembly structure of a device for measuring wall thickness of a resonant cavity according to the present utility model shown in FIG. 1;

fig. 3 is a schematic structural diagram of a device for measuring wall thickness of a resonant cavity according to the present utility model in use state shown in fig. 1.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, 2 and 3, a device for measuring wall thickness of resonant cavity, the base 100, the upper fixing base 200, the guide post 300, the upper measuring post 400, the lower measuring post 500 and the digital caliper 600, wherein two ends of the guide post 300 are respectively and fixedly connected with the base 100 and the upper fixing base 200, the digital caliper 600 is slidably disposed on the guide post 300, the upper measuring post 400 is fixedly mounted on the digital caliper 600, and the lower measuring post 500 is fixedly mounted on the base 100 and is opposite to the upper measuring post 400 in the Z-axis direction.

In one embodiment, the device for measuring wall thickness of resonant cavity further comprises a balancing component 700, the balancing component 700 comprises a pulley fixing base 710, a first fixed pulley 720, a second fixed pulley 730, a third fixed pulley 740, a pull rope 750 and a balancing weight 760, the pulley fixing base 710 is detachably mounted at the bottom of the guide post 300, the first fixed pulley 720 is mounted in the pulley fixing base 710, the second fixed pulley 730 and the third fixed pulley 740 are respectively mounted in the upper fixing base 200, and the pull rope 750 is sequentially sleeved on the first fixed pulley 720, the second fixed pulley 730 and the third fixed pulley 740, and two ends of the pull rope 750 are respectively fixedly connected with the digital caliper 600 and the balancing weight 760.

In one embodiment, the measuring surfaces of the upper measuring column 400 and the lower measuring column 500 have a planar structure.

In one embodiment, the upper measuring column 400 has a downward pressure of 15g to 20g.

In one embodiment, the upper measuring column 400 is made of a hard alloy material with high hardness and high wear resistance.

In one embodiment, the lower measurement post 500 is made of a steel material.

In one embodiment, the pull cord 750 is made of an aramid cord.

In one embodiment, the draw cord 750 has a cross-sectional diameter of 0.5mm.

The upper measuring column 400 and the lower measuring column 500 are symmetrically arranged. If the upper measuring column 400 is moved straight in the direction of the lower measuring column 500, it can be abutted with the lower measuring column 500.

When the wall thickness of the resonant cavity needs to be measured, one surface of the wall of the resonant cavity needs to be measured is placed on the lower measuring column 500 to be mutually abutted with the lower measuring column 500, at this time, the lower measuring column 500 is set to be a measured positioning zero point, and the upper measuring column 400 is moved to slide on the guide column 300 in the direction of the lower measuring column 500 until being mutually abutted with the other surface of the wall of the resonant cavity. The high-precision rack is arranged on the ruler body of the digital caliper 600, the rack operates to drive the circular grid plates to rotate, the displacement between the upper measuring column 400 and the lower measuring column 500 is converted into a pulse signal by using the photoelectric pulse counting principle, and the measured size is digitally displayed on a screen through a counter and a display, so that the wall thickness of the resonant cavity can be obtained.

Like this, resonant cavity wall thickness measuring device, through the cooperation setting of guide post 300, go up measuring post 400, lower measuring post 500, digital caliper 600, with the one side of the resonant cavity wall that needs to be measured with lower measuring post butt, lower measuring post 500 is as measuring the zero point, move and go up measuring post 400 and make it slide in guide post 300 downwardly measuring post 500 direction until with the another side butt of resonant cavity wall, digital caliper 600 can measure resonant cavity wall thickness according to the displacement between upper measuring post 400, lower measuring post 500, whole measuring process is simple and convenient, need not to cut the resonant cavity, moreover can adapt to the wall thickness measurement of different cavity products, the suitability is more extensive.

In one embodiment, in order to make the measurement force constant, the resonant cavity wall thickness measurement device further includes a balancing assembly 700, the balancing assembly 700 includes a pulley fixing base 710, a first fixed pulley 720, a second fixed pulley 730, a third fixed pulley 740, a pull rope 750, and a balancing weight 760, the pulley fixing base 710 is detachably mounted at the bottom of the guide post 300, the first fixed pulley 720 is mounted in the pulley fixing base 710, the second fixed pulley 730 and the third fixed pulley 740 are respectively mounted in the upper fixing base 200, and the pull rope 750 is sequentially sleeved on the first fixed pulley 720, the second fixed pulley 730, the third fixed pulley 740, and two ends of the pull rope are respectively fixedly connected with the digital caliper 600 and the balancing weight 760.

The force may be measured by an electronic scale detection or calibration system. For example, the measuring force can be detected by an electronic scale, and the specific method is as follows: firstly, removing the lower measuring column 500, placing an electronic platform balance (the precision is 0.01 g), and automatically dropping the upper measuring column 400 onto the electronic platform balance (weighing the lower pressure of the upper measuring column 400) under the action of the gravity of the balancing weight 760 and the pull rope 750; then, by adjusting the weight of the balancing weight (for example, using a machining material removing method), the downward pressure (measuring force) of the upper measuring column 400 reaches a range of 15-20 g, so that the downward pressure of the upper measuring column 400 to the resonant cavity wall always keeps a constant value, and measurement errors caused by unstable manual operation force measurement are avoided.

In one embodiment, in order to ensure the accuracy of measurement, the measuring surfaces of the upper measuring column 400 and the lower measuring column 500 have a planar structure.

In this way, the measuring surfaces of the upper measuring column 400 and the lower measuring column 500 are planar structures, so that the measuring surfaces of the upper measuring column 400 and the lower measuring column 500 are respectively tightly attached to the measuring surface of the resonant cavity wall, and the measuring precision and accuracy are ensured.

In one embodiment, the upper measuring column 400 is made of a hard alloy material with high hardness and high wear resistance; the lower measuring column 500 is made of steel material.

Thus, the upper measuring column 400 is made of a hard alloy material with high hardness and high wear resistance; the lower measuring column 500 is made of steel materials, so that the upper measuring column 400 and the lower measuring column 500 are more firm and durable without damage.

In one embodiment, the pull cord 750 is made of aramid cord; the cross-sectional diameter of the pull cord 750 is 0.5mm.

The aramid yarn is a flexible polymer yarn, has higher breaking strength than common polyester, cotton, nylon and the like, has larger elongation, soft hand feeling and good spinnability, and can produce short fibers and filaments with different fineness and length. The limiting oxygen index of the aramid fiber is larger than 28, so that the aramid fiber cannot be continuously burnt when the aramid fiber is separated from flame, is a forever flame-retardant fiber, and cannot be reduced or lose flame-retardant function due to the application time and the washing times of the aramid fiber. The aramid yarn has excellent chemical resistance, can resist most high concentration inorganic acid and has good alkali resistance at normal temperature. The pull cord 750 made of aramid cord is more durable.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (8)

1. A resonant cavity wall thickness measuring device, comprising: the digital caliper comprises a base, an upper fixing seat, a guide post, an upper measuring post, a lower measuring post and a digital caliper body, wherein two ends of the guide post are respectively fixedly connected with the base and the upper fixing seat, the digital caliper body is slidably arranged on the guide post, the upper measuring post is fixedly arranged on the digital caliper body, and the lower measuring post is fixedly arranged on the base and is oppositely arranged on the Z-axis direction with the upper measuring post.

2. The device for measuring the wall thickness of the resonant cavity according to claim 1, further comprising a balancing component, wherein the balancing component comprises a pulley fixing seat, a first fixed pulley, a second fixed pulley, a third fixed pulley, a pull rope and a balancing weight, the pulley fixing seat is detachably arranged at the bottom of the guide post, the first fixed pulley is arranged in the pulley fixing seat, the second fixed pulley and the third fixed pulley are respectively arranged in the upper fixing seat, and the pull rope is sequentially sleeved on the first fixed pulley, the second fixed pulley and the third fixed pulley, and two ends of the pull rope are respectively fixedly connected with the digital caliper and the balancing weight.

3. The device for measuring the wall thickness of a resonant cavity according to claim 1, wherein the measuring surfaces of the upper measuring column and the lower measuring column are planar structures.

4. A device for measuring wall thickness of a resonant cavity according to claim 1, wherein the upper measuring column down force is 15 g-20 g.

5. The device for measuring the wall thickness of a resonant cavity according to claim 1, wherein the upper measuring column is made of a hard alloy material with high hardness and high wear resistance.

6. A device for measuring wall thickness of a resonant cavity according to claim 1, wherein the lower measuring post is made of steel material.

7. The device for measuring the wall thickness of a resonant cavity according to claim 2, wherein the pull rope is made of aramid fiber ropes.

8. A device for measuring wall thickness of a resonant cavity according to claim 2, wherein the cross-sectional diameter of the pull cord is 0.5mm.