Wave foil measuring clamp

Abstract

The invention relates to the field of bump foil type gas dynamic pressure bearings, and provides a bump foil measuring clamp which comprises a base, a pressing plate and a plurality of bolts used for fixing the pressing plate, and the pressing plate is provided with a plurality of clamping teeth. The bump foil is straightly unfolded and fixed to the base through the clamping teeth on the pressing plate, and the pressing plate is fixed to the base through the bolts. The bump foil measuring clamp is simple in structure and convenient to operate, the bump foil is straightly unfolded and fixed to the base through the clamping teeth on the two pressing plates, and the problem that shape parameters such as the wave height and the wave pitch are difficult to accurately measure due to warping of the bump foil is solved.

Description

Technical Field

[0001] The invention relates to the field of machinery, and in particular to a wave foil measuring fixture. Background Art

[0002] The corrugated foil type gas dynamic pressure bearing has the advantages of high speed, low friction power consumption, oil-free lubrication and good vibration reduction performance. It has been used in aerospace, automobile, micro motor, micro gas turbine and other fields. This type of bearing uses elastic flat foil as the surface for generating lubricating gas film, and elastic corrugated foil as damping support. The flexible support structure composed of flat foil and corrugated foil has a great influence on the bearing performance. Different bearing stiffness and damping can be obtained by changing the shape parameters of corrugated foil and flat foil. Among them, corrugated foil is usually obtained by cold stamping method. After processing and use, the corrugated foil will warp, which makes it difficult to accurately measure its shape parameters such as wave height and wave distance.

[0003] Therefore, a set of wave foil measuring fixture is needed to unfold and fix the wave foil flatly to achieve accurate measurement of its shape parameters such as wave height and wave distance. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a wave foil measuring fixture.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The invention discloses a bump foil measuring fixture, which comprises a base, a pressing plate and bolts; the bolts fix the pressing plate on the base to form a complete bump foil measuring fixture.

[0007] As a preferred technical solution of the present invention, the base is provided with threaded holes for cooperating with bolts, and the pressure plate is provided with an extended hole corresponding to the bolts for adjusting the positions of the pressure plate and the corrugated foil on the base.

[0008] As a preferred technical solution of the present invention, the pressing plate is designed with a plurality of equally spaced teeth, and the distance between the bottom of the teeth on the pressing plate and the base is .mm.

[0009] As a preferred technical solution of the present invention, an embedded block is provided at the bottom end of the base, the base itself is made of transparent engineering plastic material, a camera and a connecting line extending from the camera are installed at the rear end of the embedded block, and a magnetic strip is also provided on one side of the embedded block.

[0010] The present invention also provides a method for using the wave foil measuring fixture, and the working steps are as follows:

[0011] First, fix the base, and use bolts to fix one of the pressure plates to the base; use the teeth on the fixed pressure plate to contact with the straight section of the bump foil to fix one end of the bump foil to the base; use the teeth on the other pressure plate to contact with the straight section of the other end of the bump foil; tighten the bolts on the pressure plate to fix the pressure plate to the base, so that the bump foil is fixed straight in the fixture.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The wave foil measuring fixture in the present invention has a simple structure and is easy to operate. It can effectively unfold and fix the wave foil flatly, so that the shape parameters of the wave foil, such as wave height and wave distance, can be accurately measured. During measurement, it can also be connected to other terminal devices to complete the measurement and recording of the overall length through a camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a structural schematic diagram of the wave foil measuring fixture of the present invention;

[0016] Figure 2 It is a side view of the clamping plate tooth structure of the wave foil measuring fixture of the present invention;

[0017] Figure 3 It is a schematic diagram of wave foil;

[0018] Figure 4 is a bottom view of the base structure of the present invention;

[0019] In the figure: 1. base; 2. pressure plate; 20. latch teeth; 3. bolts; 4. corrugated foil; 40. raised corrugations of corrugated foil; 41. straight section of corrugated foil; 5. embedded block; 6. scale line; 7. magnetic strip; 8. camera; 9. connecting wire. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] Example 1

[0022] like Figure 1-4 As shown, the present invention provides a bump foil measuring fixture, comprising a base 1, a pressing plate 2, and bolts 3; the bolts 3 fix the pressing plate 2 on the base 1 to form a complete bump foil measuring fixture.

[0023] The base 1 is provided with threaded holes for cooperating with the bolts 3 , and the pressing plate 2 is provided with three extended holes corresponding to the bolts 3 for adjusting the positions of the pressing plate 2 and the corrugated foil on the base 1 .

[0024] The pressing plate 2 is designed with a plurality of latching teeth arranged at equal distances, and the distance between the bottom of the latching teeth on the pressing plate 2 and the base 1 is 0.1 mm.

[0025] An embedded block 5 is provided at the bottom end of the base 1. The base 1 itself is made of transparent engineering plastic material. A camera 8 and a connecting line 9 extending from the camera 8 are installed at the rear end of the embedded block 5. A magnetic strip 7 is also provided on one side of the embedded block 5, and a scale line 6 is also provided on the top surface of the base 1.

[0026] The working steps are as follows:

[0027] First, fix the base 1, and use the bolts 3 to fix one of the pressure plates 2 on the base 1; use the latch teeth 20 on the fixed pressure plate 2 to cooperate with the straight section 41 of the bump foil, and the raised corrugations 40 of the bump foil are in the gap of the latch teeth 20 to fix one end of the bump foil 4 on the base 1; use the latch teeth on the other pressure plate 2 to contact and cooperate with the straight section 41 at the other end of the bump foil; tighten the bolts 3 on the pressure plate 2 to fix the pressure plate 2 on the base 1, so that the bump foil 4 is fixed straight in the fixture.

[0028] When performing digital recording, the scale lines 6 set on the transparent base 1 can be projected to the bottom side. Therefore, when the connecting line 9 is connected to other devices, the fisheye lens formed by the internal periscope camera 8 can directly shoot the length before and after the scale lines 6, and save it to the terminal for processing, or directly based on the main control module contained in the embedded block 5, such as the image recognition module carried by the MCU control unit, directly read the data of the captured image, and finally send the specific number to the terminal for recording; and the magnetic strip 7 on one side is used to fix the wave foil 4 on the upper side of the base 1 by absorption, and complete the preliminary adsorption and fixation before the pressure plate 2 is installed.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wave foil measuring fixture, characterized in that: It comprises a base (1), a pressing plate (2) and bolts (3); the bolts (3) fix the pressing plate (2) on the base (1) to form a complete wave foil measuring fixture.

2. A bump foil measuring fixture according to claim 1, characterized in that: The base (1) is provided with a threaded hole for cooperating with the bolt (3), and the pressure plate (2) is provided with three elongated holes corresponding to the bolt (3) for adjusting the positions of the pressure plate (2) and the corrugated foil on the base (1).

3. A bump foil measuring fixture according to claim 1, characterized in that: The pressing plate (2) is designed with a plurality of latching teeth arranged at equal distances, and the distance between the bottom of the latching teeth on the pressing plate (2) and the base (1) is 0.1 mm.

4. A bump foil measuring fixture according to claim 1, characterized in that: An embedded block (5) is arranged at the bottom end of the base (1); the base (1) itself is made of a transparent engineering plastic material; a camera (8) and a connecting line (9) extending from the camera (8) are installed at the rear end of the embedded block (5); a magnetic attraction strip (7) is also arranged on one side of the embedded block (5); and a scale mark (6) is also arranged on the top surface of the base (1).

5. A method for using a wave foil measuring fixture, characterized in that: The working steps are as follows: First, fix the base (1), and use bolts (3) to fix one of the pressure plates (2) on the base (1); use the latch teeth on the fixed pressure plate (2) to contact with the straight section of the bump foil, and fix one end of the bump foil on the base (1); use the latch teeth on the other pressure plate (2) to contact with the straight section of the other end of the bump foil; tighten the bolts (3) on the pressure plate (2), fix the pressure plate (2) on the base (1), and fix the bump foil flatly in the fixture.

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