CN112781468B - Fan blade fiber cloth layer thickness measuring instrument and thickness measuring method - Google Patents
Fan blade fiber cloth layer thickness measuring instrument and thickness measuring method Download PDFInfo
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- CN112781468B CN112781468B CN202110260959.9A CN202110260959A CN112781468B CN 112781468 B CN112781468 B CN 112781468B CN 202110260959 A CN202110260959 A CN 202110260959A CN 112781468 B CN112781468 B CN 112781468B
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- thimble
- fiber cloth
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- fan blade
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention provides a fan blade fiber cloth layer thickness measuring instrument and a thickness measuring method, wherein the fan blade fiber cloth layer thickness measuring instrument comprises: the ejector pin comprises a body, an ejector pin and an elastic piece, wherein an accommodating space is formed inside the body, and the elastic piece is arranged in the accommodating space; one end of the body is of an arc-shaped structure, one end of the body is provided with a channel communicated with the accommodating space, the ejector pin penetrates through the channel, the first end of the ejector pin is located outside the body, and the second end of the ejector pin is connected with the elastic piece. The fan blade fiber cloth layer thickness measuring instrument is simple in structure and convenient to manufacture and use, can efficiently measure the layer thickness of the glass fiber cloth at each position of a mold at any time, and can truly measure the actual thickness of the stacked multiple layers of glass fiber cloth, so that the true required contour of a core material can be drawn more accurately according to measured data, the accuracy of the core material is improved, and the repair time is shortened.
Description
Technical Field
The invention relates to the technical field of precision measuring instruments, in particular to a thickness measuring instrument and a thickness measuring method for a fiber cloth layer of a fan blade.
Background
Along with the development of science and technology, wind power generation market constantly enlarges and matures, and wind power generation continuously promotes in the electric quantity accounts for the ratio as important clean renewable energy, how to enlarge wind power generation and accelerate the efficiency of wind power generation, is the hot topic. The wind power blade is used as a core component in wind power generation, the performance and the structure of the wind power blade directly influence the conversion efficiency of the wind power generation, and further influence the wind power generation capacity, and the wind power generation blade is an important link in the wind power generation industry.
Because the wind power blade is in the production process, the inside of the wind power blade is provided with the sandwich structure, and the generation time and the efficiency of the wind power blade are greatly influenced by the repair time of the internal core material. The accuracy of measuring the actual surface contour of the core material is improved, the repair time of the core material can be obviously shortened, and the repair efficiency of the core material is further improved, however, the actual surface contour size requirement of the core material is greatly different from the designed theoretical value. In the prior art, software is adopted to simulate the thickness of glass fiber suit cutting to measure the surface contour dimension of the core material, and the surface contour dimension of the core material is measured through software simulation to correct a drawing, so that the difference value between the theoretical contour and the actual contour of the core material is reduced.
However, the difference between the actual thickness and the theoretical thickness of the glass fiber cloth is large, the time consumed in the process of measuring the thickness through software simulation is long, the operation is complex, the measured thickness is inaccurate, parameters can not be corrected timely according to actual conditions, the accuracy rate of the real surface profile of the core material is low, and the production efficiency of the blade in actual production is low.
Disclosure of Invention
The invention provides a thickness measuring instrument and a thickness measuring method for a fan blade fiber cloth layer, which are used for solving the problems of long time consumption and low measuring precision of the thickness measurement of glass fiber cloth in the prior art.
The invention provides a thickness measuring instrument for a fiber cloth layer of a fan blade, which comprises: the ejector pin comprises a body, an ejector pin and an elastic piece, wherein an accommodating space is formed inside the body, and the elastic piece is arranged in the accommodating space;
one end of the body is of an arc-shaped structure, a channel communicated with the accommodating space is formed in one end of the body, the ejector pin penetrates through the channel, the first end of the ejector pin is located outside the body, and the second end of the ejector pin is connected with the elastic piece.
According to the fan blade fiber cloth layer thickness measuring instrument provided by the invention, the fan blade fiber cloth layer thickness measuring instrument further comprises a limiting piece positioned in the accommodating space, the second end of the ejector pin is connected with the limiting piece, and one end of the elastic piece is abutted to the limiting piece.
According to the fan blade fiber cloth layer thickness measuring instrument provided by the invention, the limiting piece is a limiting disc, the limiting disc is sleeved on the outer side surface of the thimble, and one end of the elastic piece is abutted against the surface of the limiting disc.
According to the fan blade fiber cloth layer thickness measuring instrument provided by the invention, the body is a shell, a supporting plate is arranged in the shell, the accommodating space is formed between the supporting plate and the inner wall surface of the shell, a first through hole is formed in one end of the shell, a second through hole is formed in the supporting plate, and the second end of the ejector pin is connected with the elastic part after sequentially penetrating through the first through hole and the second through hole.
According to the fan blade fiber cloth layer thickness measuring instrument provided by the invention, the fan blade fiber cloth layer thickness measuring instrument further comprises a guide cylinder positioned in the shell, and the second end of the thimble sequentially penetrates through the first through hole, the guide cylinder and the second through hole.
According to the fan blade fiber cloth layer thickness measuring instrument provided by the invention, the other end of the shell is provided with a third through hole, and the second through hole and the third through hole are coaxially arranged.
According to the thickness measuring instrument for the fiber cloth layer of the fan blade, the channel penetrates through two opposite surfaces of the body, and the channel penetrates through the accommodating space to be distributed.
According to the fan blade fiber cloth layer thickness measuring instrument provided by the invention, the second end of the ejector pin is provided with scales along the length direction of the ejector pin.
According to the thickness measuring instrument for the fan blade fiber cloth layer, the outer surface of the body is provided with the handle.
The invention also provides a thickness measuring method, which comprises the following steps:
the first end of the ejector pin is inserted into the to-be-detected piece until the first end of the ejector pin completely penetrates through the to-be-detected piece and abuts against the mold;
one end of the body is contacted with the surface of the piece to be detected;
and obtaining the thickness of the piece to be measured based on the difference value between the length value of the first end of the thimble and the length change value of the second end of the thimble.
The invention provides a fan blade fiber cloth layer thickness measuring instrument and a thickness measuring method, wherein a first end of a thimble is positioned outside a lower end part of a body, the length L1 of the thimble positioned outside the lower end part of the body is firstly obtained, during measurement, the first end of the thimble is inserted into a piece to be measured until the first end of the thimble completely penetrates through the piece to be measured and then is abutted against a mould, the lower end part of the body is contacted with the surface of the piece to be measured, at the moment, a second end of the thimble moves upwards for a certain distance relative to an accommodating space, the moving length L2 of the second end of the thimble is obtained, and the thickness L3 of the piece to be measured is the difference value of L1 and L2. The fan blade fiber cloth layer thickness measuring instrument is simple in structure and convenient to manufacture and use, can efficiently measure the layer thickness of the glass fiber cloth at each position of a mold at any time, and can truly measure the actual thickness of the stacked multiple layers of glass fiber cloth, so that the true required contour of a core material can be drawn more accurately according to measured data, the accuracy of the core material is improved, and the repair time is shortened.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a thickness measuring instrument for a fiber cloth layer of a fan blade according to the present invention;
FIG. 2 is a second schematic structural view of a thickness measuring instrument for a fiber cloth layer of a fan blade according to the present invention;
FIG. 3 is a flow chart of a thickness measurement method provided by the present invention;
reference numerals:
1: a housing; 2: a handle; 3: a limiting disc;
4: a guide cylinder; 5: a thimble; 6: a support plate;
7: an elastic member; 8: glass fiber cloth.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The thickness measuring instrument for the fiber cloth layer of the fan blade according to the present invention will be described with reference to fig. 1 to 2.
As shown in fig. 1, a thickness measuring instrument for a fiber cloth layer of a fan blade according to an embodiment of the present invention includes: the ejector pin comprises a body, an ejector pin 5 and an elastic piece 7, wherein the elastic piece 7 is a part with telescopic performance and is not particularly limited. The elastic member 7 is, for example, a spring.
The inside of body is formed with accommodation space, and this accommodation space is used for placing elastic component 7, and accommodation space's size can be with the size looks adaptation of elastic component 7, that is to say, is the columniform condition in accommodation space under, the external diameter of spring and accommodation space's internal diameter phase-match.
Because the lower tip of body and the surperficial direct contact of glass fiber cloth 8 during the measurement, thereby in order to improve body and the laminating degree of glass fiber cloth 8 and promote measuring accuracy, the lower tip of body is the arc structure.
The lower end of the body is provided with a channel communicated with the accommodating space, the thimble 5 penetrates through the channel, the thimble 5 is in clearance fit with the channel, the first end of the thimble 5 is located outside the body, the second end of the thimble 5 is connected with an elastic part 7 located in the accommodating space, and the elastic part 7 can apply restoring force to the thimble 5, so that the thimble 5 can be reset after measurement is completed.
The first end of the thimble 5 as the measuring end is located outside the main body, and the length of the thimble 5 located outside the main body is greater than the thickness of the piece to be measured, and the specific length is not specifically limited herein.
In the embodiment of the present invention, the first end of the thimble 5 is located outside the lower end of the body, first, a length L1 of the thimble 5 located outside the lower end of the body is obtained, during measurement, the first end of the thimble 5 is inserted into the to-be-measured part until the first end of the thimble 5 completely penetrates through the to-be-measured part and then abuts against the mold, so that the lower end of the body contacts with the surface of the to-be-measured part, at this time, the second end of the thimble 5 moves upward by a certain distance relative to the accommodating space, a length L2 of the second end of the thimble 5 is obtained, and a thickness L3 of the to-be-measured part is a difference between L1 and L2.
The fan blade fiber cloth layer thickness measuring instrument provided by the embodiment of the invention has the advantages of simple structure and convenience in manufacturing and use, can efficiently measure the layer thickness of the glass fiber cloth 8 at each position of the mold at any time, and can truly measure the actual thickness of the stacked multiple layers of glass fiber cloth, so that the true required contour of a core material can be more accurately drawn according to the measured data, the accuracy of the core material is further improved, and the repair time is shortened.
In an alternative embodiment, in order to obtain the length L2 of the second end of the thimble 5, the body may be made of a transparent material.
On the basis of the above embodiment, the thickness measuring instrument for the fiber cloth layer of the fan blade further comprises a limiting member located in the accommodating space, the second end of the thimble 5 is connected with the limiting member, and one end of the elastic member 7 is abutted against the limiting member.
In an alternative embodiment, the limiting member may include a plurality of limiting posts, the plurality of limiting posts are sequentially disposed along the circumferential direction of the thimble 5, and one end of the elastic member 7 abuts against the plurality of limiting posts.
In an alternative embodiment, the limiting member may be a limiting disc 3, the thimble 5 is disposed through the limiting disc 3, the thimble 5 is connected to the limiting disc 3, and one end of the elastic member 7 abuts against the surface of the limiting disc 3.
It should be noted that the thimble 5 penetrates through the center of the limiting disc 3, and the thimble 5 is fixedly connected with the limiting disc 3. Wherein, the position of the limiting disc 3 on the thimble 5 determines the length of the thimble 5 positioned outside the lower end part of the body.
It will be appreciated that the size of the spacing disc 3 is larger than the size of the through hole and smaller than the size of the receiving space. Wherein, the thimble 5 is fixed on the spacing disc 3 and can prevent the thimble 5 from slipping off from the channel.
On the basis of the embodiment, the channel penetrates through two opposite surfaces of the body, and the channel penetrates through the accommodating space to be distributed.
Under the condition that one end of the elastic element 7 is fixedly connected with the side surface of the thimble 5, both the first end and the second end of the thimble 5 can be located outside the body, or only the first end of the thimble 5 is located outside the body. Under the condition that the second end of the thimble 5 is located outside the body, the elastic element 7 can be sleeved on the outer side surface of the thimble 5. The point of attachment of one end of the elastic element 7 to the side of the thimble 5 determines the length of the thimble 5 outside the lower end of the body.
Under the condition that the thimble 5 is connected with the limiting disc 3 and one end of the elastic element 7 is abutted against the surface of the limiting disc 3, both the first end and the second end of the thimble 5 can be positioned outside the body, or only the first end of the thimble 5 is positioned outside the body. The position of the limiting plate 3 on the thimble 5 determines the length of the thimble 5 outside the lower end of the body.
In the embodiment of the present invention, as shown in fig. 2, if the thimble 5 is in the initial state, the first end of the thimble 5 is located outside the lower end of the body, first, a length L1 of the thimble 5 located outside the lower end of the body is obtained, during measurement, the first end of the thimble 5 is inserted into the to-be-measured object until the first end of the thimble 5 completely penetrates through the to-be-measured object and abuts against the mold, the lower end of the body contacts with the surface of the to-be-measured object, and at this time, if the second end of the thimble 5 extends out of the upper end of the body, and a length L4 of the second end of the thimble 5 outside the upper end of the body is obtained, a thickness L3 of the to-be-measured object is a difference between L1 and L4.
Or, if the thimble 5 is in the initial state, the first end of the thimble 5 is located outside the lower end of the body, and the second end of the thimble 5 is located outside the upper end of the body. First, the length L1 of the thimble 5 located outside the lower end portion of the body and the length L5 of the thimble 5 located outside the upper end portion of the body are obtained. During measurement, the first end of the thimble 5 is inserted into the to-be-measured part until the first end of the thimble 5 completely penetrates through the to-be-measured part and then abuts against the mold, the lower end part of the body is contacted with the surface of the to-be-measured part, and at this time, if the second end of the thimble 5 continuously extends out of the upper end part of the body, the length L6 of the second end of the thimble 5 outside the upper end part of the body is obtained, and the thickness L3 of the to-be-measured part is equal to L1- (L6-L5).
In an alternative embodiment, the body is a shell 1, and the lower end of the shell 1 is of an arc structure. The inside of casing 1 is equipped with backup pad 6, forms accommodation space between the internal face of backup pad 6 and casing 1, and the one end of casing 1 is equipped with first through-hole, is equipped with the second through-hole in the backup pad 6, and the second end of thimble 5 wears to establish in proper order behind first through-hole and the second through-hole and links to each other with elastic component 7.
A support plate 6 is provided in the housing 1 in a horizontal state, and a storage space is formed between the support plate 6 and an inner wall surface of the ceiling portion of the housing 1. The distance between the support plate 6 and the inner wall surface of the ceiling of the housing 1 depends on the length of the elastic member 7.
In an alternative embodiment, two support plates 6 are provided inside the housing 1 in a horizontal state, and an accommodation space is formed between the two support plates 6. Wherein the distance between the two support plates 6 depends on the length of the spring 7.
On the basis of the above embodiment, in order to maintain the coaxiality of the thimble 5, the fan blade fiber cloth layer thickness measuring instrument further includes a guide cylinder 4 located inside the housing 1, and the second end of the thimble 5 sequentially penetrates through the first through hole, the guide cylinder 4 and the second through hole.
It should be noted that the first through hole, the guide cylinder 4 and the second through hole are all coaxially arranged, and the diameter of the thimble 5 may be 0.05mm to 2mm. At this time, the guide cylinder 4 is in clearance fit with the thimble 5.
On the basis of the above embodiment, the other end of the housing 1 is provided with a third through hole, and the second through hole and the third through hole are coaxially arranged.
In a case that one end of the elastic element 7 is fixedly connected with the side surface of the thimble 5, both the first end and the second end of the thimble 5 may be located outside the body, or only the first end of the thimble 5 may be located outside the body. Under the condition that the second ends of the thimbles 5 are located outside the body, the second ends of the thimbles 5 penetrate through the third through holes. The point of attachment of one end of the elastic element 7 to the side of the thimble 5 determines the length of the thimble 5 outside the lower end of the body.
Under the condition that the thimble 5 is connected with the limiting disc 3 and one end of the elastic element 7 is abutted against the surface of the limiting disc 3, both the first end and the second end of the thimble 5 can be positioned outside the body, or only the first end of the thimble 5 is positioned outside the body. Under the condition that the second ends of the thimbles 5 are located outside the body, the second ends of the thimbles 5 penetrate through the third through holes. The position of the limiting plate 3 on the thimble 5 determines the length of the thimble 5 outside the lower end of the body.
In an alternative embodiment, in order to ensure the recovery performance of the elastic member 7, the size of the accommodating space needs to satisfy a condition that the elastic member 7 is in a compressed state in an original state in a state where the elastic member 7 is disposed in the accommodating space. That is, the elastic member 7 is in a compressed state before the measurement of the object to be measured is performed.
In the embodiment of the present invention, as shown in fig. 2, if the thimble 5 is in the initial state, the first end of the thimble 5 passes through the first through hole and then is located outside the lower end portion of the housing 1, first, a length L1 of the thimble 5 located outside the lower end portion of the housing 1 is obtained, during measurement, the first end of the thimble 5 is inserted into the to-be-measured piece until the first end of the thimble 5 completely penetrates through the to-be-measured piece and then abuts against the mold, the lower end portion of the housing 1 contacts with the surface of the to-be-measured piece, at this time, if the second end of the thimble 5 passes through the third through hole and extends out of the upper end portion of the housing 1, and a length L4 of the second end of the thimble 5 outside the upper end portion of the housing 1 is obtained, so that a thickness L3 of the to-be-measured piece is a difference between L1 and L4.
Alternatively, if the thimble 5 is in the initial state, the first end of the thimble 5 is located outside the lower end of the housing 1, and the second end of the thimble 5 is located outside the upper end of the housing 1. First, a length L1 of the thimble 5 located outside the lower end portion of the housing 1 and a length L5 of the thimble 5 located outside the upper end portion of the housing 1 are obtained. During measurement, the first end of the thimble 5 is inserted into the to-be-measured part until the first end of the thimble 5 completely penetrates through the to-be-measured part and then abuts against the mold, the lower end part of the shell 1 contacts with the surface of the to-be-measured part, and at this time, if the second end of the thimble 5 continuously extends out of the upper end part of the shell 1, the length L6 of the second end of the thimble 5 outside the upper end part of the shell 1 is obtained, and the thickness L3 of the to-be-measured part is equal to L1- (L6-L5).
On the basis of the above embodiment, in order to facilitate intuitive and quick acquisition of the thickness of the to-be-measured object, the first end of the thimble 5 is provided with scales along the length direction of the thimble 5, or the second end of the thimble 5 is provided with scales along the length direction of the thimble 5, or both the first end and the second end of the thimble 5 are provided with scales along the length direction of the thimble 5.
It should be noted that the scale may be set on the thimble 5 by means of engraving or printing.
In addition to the above embodiments, in order to facilitate the use of the thickness measuring apparatus, the outer wall surface of the case 1 is provided with the handle 2.
It should be noted that the handle 2 and the housing 1 may be detachably connected or integrally formed, for example, the handle 2 and the housing 1 are connected by welding. The specific connection manner of the handle 2 and the housing 1 is not particularly limited herein.
On the other hand, as shown in fig. 3, the thickness measuring method of the embodiment of the present invention includes:
s100, inserting the first end of the thimble 5 into the to-be-tested piece until the first end of the thimble 5 completely penetrates through the to-be-tested piece and abuts against a mold;
before one end of the thimble 5 is inserted into the inside of the device under test, the glass fiber cloth 8 at the position is firstly flattened.
S200, one end of the body is in contact with the surface of the piece to be detected;
s300, obtaining the thickness of the to-be-measured piece based on the difference value between the length value of the first end of the thimble 5 and the length change value of the second end of the thimble 5.
The first end of the thimble 5 is located outside the lower end of the body, first the length L1 of the thimble 5 located outside the lower end of the body is obtained, during measurement, the first end of the thimble 5 is inserted into the to-be-measured part until the first end of the thimble 5 completely penetrates through the to-be-measured part and then abuts against the mold, the lower end of the body is in contact with the surface of the to-be-measured part, at the moment, the second end of the thimble 5 moves upwards for a certain distance relative to the accommodating space, the length L2 of the second end of the thimble 5 is obtained, and then the thickness L3 of the to-be-measured part is the difference between L1 and L2.
If the thimble 5 is in the initial state, the first end of the thimble 5 is located outside the lower end of the body, first obtaining a length L1 of the thimble 5 located outside the lower end of the body, during measurement, the first end of the thimble 5 is inserted into the to-be-measured part until the first end of the thimble 5 completely penetrates through the to-be-measured part and then abuts against the mold, the lower end of the body contacts with the surface of the to-be-measured part, at this time, if the second end of the thimble 5 extends out of the upper end of the body, obtaining a length L4 of the second end of the thimble 5 outside the upper end of the body, and then the thickness L3 of the to-be-measured part is a difference between L1 and L4.
Or, if the thimble 5 is in the initial state, the first end of the thimble 5 is located outside the lower end of the body, and the second end of the thimble 5 is located outside the upper end of the body. First, the length L1 of the thimble 5 located outside the lower end portion of the body and the length L5 of the thimble 5 located outside the upper end portion of the body are obtained. During measurement, the first end of the thimble 5 is inserted into the to-be-measured part until the first end of the thimble 5 completely penetrates through the to-be-measured part and then abuts against the mold, the lower end part of the body is contacted with the surface of the to-be-measured part, and at this time, if the second end of the thimble 5 continuously extends out of the upper end part of the body, the length L6 of the second end of the thimble 5 outside the upper end part of the body is obtained, and the thickness L3 of the to-be-measured part is equal to L1- (L6-L5).
Compared with the manual layer number measurement counting mode, the thickness measurement method can avoid the problems because the thicknesses of the glass fiber cloth of different batches are different and the manual counting has the possibility of missing measurement, multiple measurement and the like on the layer number of the glass fiber cloth.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The utility model provides a fan blade fibre cloth layer thickness measurement appearance which characterized in that includes: the ejector pin comprises a body, an ejector pin and an elastic piece, wherein an accommodating space is formed inside the body, and the elastic piece is arranged in the accommodating space;
one end of the body is of an arc-shaped structure, one end of the body is provided with a channel communicated with the accommodating space, the thimble penetrates through the channel, the first end of the thimble is positioned outside the body, the length of the thimble positioned outside the body is larger than the thickness of the piece to be measured, and the second end of the thimble is connected with the elastic piece;
the ejector pin is characterized by further comprising a limiting piece positioned in the accommodating space, the second end of the ejector pin is connected with the limiting piece, and one end of the elastic piece is abutted against the limiting piece;
the body is a shell, a supporting plate is arranged in the shell, the accommodating space is formed between the supporting plate and the inner wall surface of the shell, a first through hole is formed in one end of the shell, a second through hole is formed in the supporting plate, and the second end of the thimble is connected with the elastic piece after sequentially penetrating through the first through hole and the second through hole;
the other end of the shell is provided with a third through hole, and the second through hole and the third through hole are coaxially arranged.
2. The fan blade fiber cloth layer thickness measuring instrument according to claim 1, wherein the limiting member is a limiting disc, the limiting disc is sleeved on the outer side surface of the ejector pin, and one end of the elastic member abuts against the surface of the limiting disc.
3. The fan blade fiber cloth layer thickness measuring instrument according to claim 1, further comprising a guide cylinder located inside the housing, wherein a second end of the thimble sequentially penetrates through the first through hole, the guide cylinder, and the second through hole.
4. The fan blade scrim layer thickness gauge according to any of claims 1 to 2, wherein the channel extends through both opposing surfaces of the body, and the channel extends through the receiving space.
5. The fan blade fiber cloth layer thickness measuring instrument according to any one of claims 1 to 2, wherein a second end of the ejector pin is provided with a scale along a length direction of the ejector pin.
6. The fan blade fiber cloth layer thickness measuring instrument of any one of claims 1 to 2, wherein a handle is provided on an outer surface of the body.
7. A thickness measuring method of the fan blade fiber cloth layer thickness measuring instrument according to any one of claims 1 to 6, characterized by comprising the following steps:
the first end of the ejector pin is inserted into the to-be-detected piece until the first end of the ejector pin completely penetrates through the to-be-detected piece and abuts against the mold;
one end of the body is contacted with the surface of the piece to be detected;
and obtaining the thickness of the piece to be measured based on the difference value between the length value of the first end of the thimble and the length change value of the second end of the thimble.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110260959.9A CN112781468B (en) | 2021-03-10 | 2021-03-10 | Fan blade fiber cloth layer thickness measuring instrument and thickness measuring method |
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| CN202110260959.9A CN112781468B (en) | 2021-03-10 | 2021-03-10 | Fan blade fiber cloth layer thickness measuring instrument and thickness measuring method |
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| CN112781468A CN112781468A (en) | 2021-05-11 |
| CN112781468B true CN112781468B (en) | 2023-01-10 |
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| US3940982A (en) * | 1974-09-16 | 1976-03-02 | The United States Of America As Represented By The Secretary Of The Navy | Subbottom rock mapping probe |
| DE202010006061U1 (en) * | 2010-04-23 | 2010-07-22 | Helmut Fischer GmbH Institut für Elektronik und Messtechnik | Measuring probe for the non-destructive measurement of the thickness of thin layers |
| CN105202998A (en) * | 2015-10-21 | 2015-12-30 | 西安长庆科技工程有限责任公司 | Heat insulation thickness detection tool |
| CN206073863U (en) * | 2016-08-20 | 2017-04-05 | 孙亚泉 | A kind of insulation material thickness detection apparatus |
| CN206056454U (en) * | 2016-10-11 | 2017-03-29 | 中国建筑第七工程局有限公司 | Thicker coating thickness measuring instrument |
| CN207797947U (en) * | 2018-02-06 | 2018-08-31 | 孙倡立 | A kind of sediment thickness measuring instrument |
| CN208296726U (en) * | 2018-06-13 | 2018-12-28 | 河北南玻玻璃有限公司 | Thickness of feed layer measuring device |
| CN109724493A (en) * | 2018-12-29 | 2019-05-07 | 天津博迈科海洋工程有限公司 | Three foot needle-like fireproof coating wet-film thickness measuring instruments of one kind and its measurement method |
| CN210908479U (en) * | 2019-06-20 | 2020-07-03 | 宁波宝新不锈钢有限公司 | Automatic strip steel thickness measuring instrument on one-plate strip steel welding machine |
| CN209978774U (en) * | 2019-07-26 | 2020-01-21 | 蔡礼愿 | Bidirectional length detection measuring instrument |
| CN210802297U (en) * | 2019-11-08 | 2020-06-19 | 海安市建筑工程质量检测中心有限公司 | Insulation material thickness detector with telescopic link |
| CN110715592A (en) * | 2019-11-19 | 2020-01-21 | 中国二十二冶集团有限公司 | Measuring tool for hot asphalt virtual paving thickness |
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