CN211855251U - Measuring device for a pore structure - Google Patents
Measuring device for a pore structure Download PDFInfo
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- CN211855251U CN211855251U CN202020468684.9U CN202020468684U CN211855251U CN 211855251 U CN211855251 U CN 211855251U CN 202020468684 U CN202020468684 U CN 202020468684U CN 211855251 U CN211855251 U CN 211855251U
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Abstract
The application relates to the field of measurement of mechanical parts, and specifically discloses a measuring device for pore structure, this measuring device includes: the fixed seat is arranged on the frame; the sliding seat is slidably arranged on the fixed seat and comprises a mounting flange with a mounting hole; the driver is arranged on the fixed seat and is in transmission connection with the sliding seat so as to drive the sliding seat to move on the fixed seat in a reciprocating manner; and a measuring assembly mounted to the sliding seat, wherein the measuring assembly includes a base shaft and a measuring head mounted to the base shaft, the base shaft being mounted in the mounting hole of the sliding seat with a gap. According to the technical scheme of this application, because the clearance fit mode between measuring component and the sliding seat for measuring component has the margin of floating, thereby makes the measuring head get into the in-process that detects the position and can adjust the gesture by oneself, and then has reduced the requirement to the positioning accuracy who detects the head.
Description
Technical Field
The application relates to the field of measurement of mechanical parts, in particular to a measuring device for a hole structure.
Background
Before mechanical parts leave a factory, the dimensional accuracy needs to be fully measured so as to ensure that the parts can play a role stably in actual work. The parameters including measurement of the hole structure of the mechanical part, dimensional accuracy and smoothness of the hole structure, and the like are important parameters for determining the reliability of the mechanical part.
Conventionally, a measuring device for a hole structure usually extends a detecting head into the hole structure, so as to detect and measure parameters such as the size and smoothness of the hole structure. It is therefore necessary to perform a positioning operation before the measurement starts, so that the detection head can be accurately inserted into the hole structure. However, for the hole structure with smaller size, the positioning difficulty of the measuring device is greatly increased, and when the positioning is wrong, the measuring device can be damaged.
Therefore, how to reduce the requirement for the position accuracy of the detection head while ensuring the measurement reliability becomes a technical problem to be solved in the art.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present application provides a measuring apparatus for a hole structure, so as to reduce the requirement for the position accuracy of a detection head while ensuring the measurement reliability.
According to the present application, a measuring device for a pore structure is proposed, characterized in that it comprises: the fixed seat is arranged on the frame; the sliding seat is slidably mounted on the fixed seat and comprises a mounting flange with a mounting hole; the driver is arranged on the fixed seat and is in transmission connection with the sliding seat so as to drive the sliding seat to move on the fixed seat in a reciprocating manner; and a measuring assembly mounted to the sliding seat, wherein the measuring assembly includes a base shaft and a measuring head mounted to the base shaft, the base shaft being mounted in the mounting hole of the sliding seat with a gap.
Preferably, the center axis of the base shaft and the center axis of the mounting hole are disposed parallel or coaxial with each other with a deviation margin in the radial direction.
Preferably, the central axis of the base shaft has an adjustable inclination angle α of-5 to 5 degrees with respect to the central axis of the mounting hole.
Preferably, a spherical matching structure is arranged between the base shaft and the mounting hole.
Preferably, the first end face and the second end face of the mounting hole are provided with a first planar sliding bearing and a second planar sliding bearing, respectively, the base shaft includes a first end having a flange portion and a second end passing through the mounting hole and mounted with the measuring head, the flange portion of the first end is mounted to the mounting flange through the first planar sliding bearing, and the second end is mounted to the mounting flange through the second planar sliding bearing.
Preferably, the flange portion of the first end of the base shaft is provided with an elastic member in contact with the first planar sliding bearing.
Preferably, the measuring device has an adjusting member for adjusting a degree of a mounting clearance margin between the measuring assembly and the slide shoe, the adjusting member being passed through the mounting flange from outside in a radial direction into the mounting hole and adjustably disposed in clearance with the base shaft.
Preferably, one of the second end face of the mounting hole and the measuring head is provided with a limiting hole, and the second end face of the mounting hole and the other of the measuring head are provided with a limiting column which falls into the limiting hole with a gap.
Preferably, the driver is provided with a driving rod in transmission connection with the sliding seat, an elastic buffer is arranged between the driving rod and the sliding seat, and the driving rod and the sliding seat have relative movement freedom in the axial direction.
Preferably, the fixed seat is provided with a limiting member for limiting the reciprocating range of the sliding seat.
According to the technical scheme of this application, because the clearance fit mode between measuring component and the sliding seat for measuring component has the margin of floating, thereby makes the measuring head get into the in-process that detects the position and can adjust the gesture by oneself, and then has reduced the requirement to the positioning accuracy who detects the head.
Additional features and advantages of the present application will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate an embodiment of the invention and, together with the description, serve to explain the invention. In the drawings:
FIG. 1 is a perspective view of a measurement device for pore structure according to a preferred embodiment of the present application;
FIG. 2 is a cross-sectional view of the measuring device of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2;
fig. 4 is a schematic view of the measuring apparatus shown in fig. 1.
Detailed Description
The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 and 2, the present application provides a measuring device for a pore structure, the measuring device comprising: a fixed seat 10, wherein the fixed seat 10 is arranged on the frame; a sliding seat 11, the sliding seat 11 being slidably mounted to the fixed seat 10, the sliding seat 11 including a mounting flange 112 having a mounting hole 111; the driver 12 is installed on the fixed seat 10 and is in transmission connection with the sliding seat 11 so as to drive the sliding seat 11 to move on the fixed seat 10 in a reciprocating manner; and a measuring assembly 13, the measuring assembly 13 being mounted to the sliding seat 11, wherein the measuring assembly 13 includes a base shaft 131 and a measuring head 132 mounted to the base shaft 131, the base shaft 131 being mounted with a gap in the mounting hole 111 of the sliding seat 11.
Conventionally, a measuring device for a hole structure usually extends a detecting head into the hole structure, so as to detect and measure parameters such as the size and smoothness of the hole structure. It is therefore necessary to perform a precise positioning operation before the measurement starts, so that the detection head can be accurately inserted into the hole structure. However, for the hole structure with smaller size, the positioning difficulty of the measuring device is greatly increased, and when the positioning is wrong, the measuring device can be damaged.
According to the technical scheme of the application, the base shaft 131 of the measuring assembly 13 is installed in the installation hole 111 of the sliding seat 11 in a clearance mode, so that the measuring assembly 13 has a floating margin relative to the installation flange 112 of the sliding seat 11, the posture of the measuring head 132 can be automatically adjusted in the process of entering the detection position, the requirement on the positioning precision of the measuring head 132 is reduced, and the detection efficiency is improved.
As shown in fig. 1, the fixing base 10 and the rack may be fixedly installed and connected, or may be movably installed and connected, and the positioning operation of the measuring device on the hole structure to be measured is realized by adjusting the position of the rack or the position of the fixing base 10 relative to the rack. The sliding seat 11 may be slidably mounted to the fixed seat 10 through a guide bar mechanism or a guide rail, and the sliding seat 11 reciprocates on the fixed seat 10 along an extending direction of the guide bar or the guide rail under the driving of a driver 12 mounted to the fixed seat 10. The driver 12 may be a rotary driver, and converts the driving force into the linear movement of the sliding seat 11 through transmission members such as a rack and pinion, a connecting rod, a chain or a transmission belt; the driver 12 may also be a linear driver, and the driving end is directly or indirectly connected to the sliding seat 11, so as to drive the sliding seat 11 to reciprocate.
The measuring assembly 13 is used for measuring parameters of a hole structure to be measured, and includes a base shaft 131 and a measuring head 132 mounted on the base shaft 131, wherein the base shaft 131 is mounted in the mounting hole 111 of the sliding seat 11 with a gap. The base shaft 131 and the mounting hole 111 of the sliding seat 11 may be mounted with different clearances according to actual working conditions. According to a preferred embodiment, as shown in fig. 2, the center axis of the base shaft 131 and the center axis of the mounting hole 111 are disposed parallel or coaxial with each other with a deviation margin in the radial direction. Therefore, when a small error occurs in the positioning, the measuring head 132 contacts with the edge of the hole structure to be measured and receives a blocking force in a non-axial direction, and at this time, the base shaft 131 deviates in a radial direction relative to the mounting hole 111, so that the measuring head 132 accurately falls into the hole structure to be measured. According to another preferred embodiment, as shown in fig. 3, the central axis of the base shaft 131 has an adjustable inclination angle α of-5 to 5 degrees, preferably-2.5 to 2.5 degrees, with respect to the central axis of the mounting hole 111. Therefore, when a small error occurs in the positioning, the measuring head 132 is in contact with the edge of the hole structure to be measured and is subjected to a blocking force in a non-axial direction, and the central axis of the base shaft 131 is inclined relative to the central axis of the mounting hole 111 to form an inclined included angle α, so that the measuring head 132 accurately falls into the hole structure to be measured.
According to the measuring device for the hole structure as described above, a floatable fitting structure, which may be implemented by a bearing or an inclined surface, is provided between the base shaft 131 and the mounting hole 111. As shown in fig. 3, a spherical fitting structure is provided between the base shaft 131 and the mounting hole 111. By this spherical fitting structure, the central axis of the base shaft 131 and the central axis of the mounting hole 111 may be offset in the radial direction relatively, or the central axis of the base shaft 131 may have an adjustable inclination angle α relative to the central axis of the mounting hole 111. The above-mentioned matching structure can be disposed at two ends of the base shaft 131 contacting with the mounting hole 111, or disposed at two ends of the mounting hole 111 contacting with the base shaft 131, or indirectly matched between the mounting hole 111 and the base shaft 131 through a spherical matching structure, thereby realizing floating matching. Preferably, as shown in fig. 2 and 3, the first and second end surfaces of the mounting hole 111 are provided with a first and second planar sliding bearings 21 and 22, respectively, the base shaft 131 includes a first end 24 having a flange portion 23 and a second end 25 passing through the mounting hole 111 and mounted with the measuring head 132, the flange portion 23 of the first end 24 is mounted to the mounting flange 112 by the first planar sliding bearing 21, and the second end 25 is mounted to the mounting flange 112 by the second planar sliding bearing 22. Since the base shaft 131 is loosely fitted in the fitting hole 111 of the slide holder 11, the flange portion 23 of the first end 24 and the second end 25 can be simultaneously displaced in the same direction, thereby displacing the base shaft 131 in the radial direction with respect to the fitting hole 111; or the flange portion 23 of the first end 24 is offset from the second end 25 in an opposite radial direction such that the base shaft 131 is at an oblique angle alpha relative to the central new axis of the mounting hole 111.
According to the measuring device as described above, in order to make the central axes of the base shaft 131 and the mounting hole 111 the same in the non-operating state of the measuring device, it is necessary to provide a return structure, which may be an elastic structure acting between the base shaft 131 and the mounting hole 111, or preferably, as shown in fig. 3, the flange portion 23 of the first end 24 of the base shaft 131 is provided with the elastic member 26 in contact with the first planar sliding bearing 21. The elastic member 26 allows the center axis to be the same between the base shaft 131 and the mounting hole 111 in the non-operating state. When the measuring head 132 is in contact interference with the edge of the hole structure to be measured, the base shaft 131 is deviated or inclined relative to the mounting hole 111, the elastic member 26 on the deviated or inclined side is pressed to be deformed to accumulate elastic potential energy, and when the measuring head 132 is far away from the hole structure to be measured and interference does not occur, the elastic potential energy accumulated by the elastic member 26 is released to reset the base shaft 131. The resilient member 26 may be a spring, a biasing member of a resilient material (e.g., rubber, resin, resilient metal, etc.), or the like.
In measuring pore structures of different pore sizes, the gap of the measuring device needs to be adjusted so that the measuring head 132 of the measuring device can exhibit different degrees of tolerance for offset or tilt. Preferably, as shown in fig. 3, the measuring device has an adjusting member 27 for adjusting the degree of the mounting clearance margin between the measuring unit 13 and the slide shoe 11, the adjusting member 27 passing through the mounting flange 112 from the outside in the radial direction into the mounting hole 111 and being adjustably disposed in clearance with the base shaft 131. By changing the length of the adjusting member 27 entering the mounting hole 111, the movable gap of the base shaft 131 is increased or decreased, so as to adjust the amount of the margin for the measuring head 132 to shift or tilt. The adjusting member 27 may be a pin or a screw, and preferably, the adjusting member 27 is a screw-engaged adjusting screw for adjusting through a screw hole provided on the mounting flange 112, and the adjusting member 27 may be one or more.
In order to avoid that the deviation or inclination amount required by the contact between the measuring head 132 and the hole structure to be measured exceeds the margin of the measuring device itself when the measuring error between the measuring device and the hole structure to be measured is large, so as to cause the damage of the measuring device or the abrasion of the base shaft 131 relative to the mounting hole 111, a further limit is required between the measuring head 132 and the mounting hole 111. Preferably, as shown in fig. 3, one of the second end surface of the mounting hole 111 and the measuring head 132 is provided with a position-limiting hole 31, and the other of the second end surface of the mounting hole 111 and the measuring head 132 is provided with a position-limiting post 32 which falls into the position-limiting hole 31 with a gap. The spacing hole 31 and the spacing post 32 are in clearance fit, and the amount of clearance defines the amount of margin by which the measuring head 132 can be offset or tilted or rotated relative to the mounting flange 112.
In order to avoid damage to the measuring device due to hard contact when the measuring head 132 is in contact with the bore structure to be measured, the drive connection of the drive 12 to the sliding block 11 is preferably flexibly driven, and preferably, as shown in fig. 4, the drive 12 has a drive rod 121 in driving connection with the sliding block 11, an elastic buffer 28 such as a spring being arranged between the drive rod 121 and the sliding block 11 and having a freedom of relative movement in the axial direction. The elastomeric damper 28 may also be implemented by other work pieces having elastomeric damping such as rubber shims or metal biasing members.
As shown in fig. 4, the fixed base 10 is preferably provided with a limit member 29 for limiting the reciprocating range of the sliding base 11. The position limiting member 29 is used for further accurately controlling the stroke of the extending and retracting actions of the measuring device, and the position limiting member 29 may be a position limiting stopper arranged on the guide rail. Preferably, the position-limiting element 29 is a stop block on the extending portion of the sliding seat 11 and on the fixed seat 10 at two sides of the extending portion, or the position-limiting element 29 is a two-way stop block on the two extending portions spaced apart from each other on the sliding seat 11 and on the fixed seat 10 between the two extending portions.
According to the preferred embodiment of the present application, the measuring device is positioned to one side of the hole structure to be measured, in case of a small positioning error, the driver 12 drives the sliding seat 11 to extend out along the direction of the guide rail arranged on the fixed seat 10, the measuring head 132 contacts and interferes with the edge of the hole structure to be measured, and since the base shaft 131 of the measuring component 13 is installed in the installation hole 111 of the sliding seat 11 with a gap, the measuring component 13 has a floating margin relative to the installation flange 112 of the sliding seat 11, so that the posture of the measuring head 132 can be adjusted by itself in the process of entering the detection position, thereby reducing the requirement for the positioning accuracy of the measuring head 132 and improving the detection efficiency. In the process, the driving of the sliding seat 11 by the driver 12 is performed under the buffering action of the elastic buffer 28, so that the safety of the measuring process and the service life of the measuring device are further improved.
The preferred embodiments of the present application have been described in detail above, but the present application is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the technical idea of the present application, and these simple modifications all belong to the protection scope of the present application.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in the present application.
In addition, any combination of the various embodiments of the present application is also possible, and the same should be considered as disclosed in the present application as long as it does not depart from the idea of the present application.
Claims (10)
1. Measuring device for a pore structure, characterized in that the measuring device comprises:
the fixing seat (10), the fixing seat (10) is installed on the frame;
a sliding seat (11), the sliding seat (11) being slidably mounted to the fixed seat (10), the sliding seat (11) comprising a mounting flange (112) having a mounting hole (111);
the driver (12), the driver (12) is installed on the fixed seat (10) and is in transmission connection with the sliding seat (11) so as to drive the sliding seat (11) to move on the fixed seat (10) in a reciprocating manner; and
a measuring assembly (13), the measuring assembly (13) being mounted to the sliding seat (11), wherein the measuring assembly (13) comprises a base shaft (131) and a measuring head (132) mounted to the base shaft (131), the base shaft (131) being mounted with clearance in the mounting hole (111) of the sliding seat (11).
2. A measuring device for a hole structure according to claim 1, characterized in that the centre axis of the base shaft (131) and the centre axis of the mounting hole (111) are arranged parallel or coaxial to each other with a deviation margin in the radial direction.
3. A measuring device for hole structures according to claim 1, characterized in that the centre axis of the base shaft (131) has an adjustable inclination angle a of-5 to 5 degrees in relation to the centre axis of the mounting hole (111).
4. A measuring device for a hole structure according to any of the claims 1-3, characterized in that a spherical mating structure is arranged between the basic shaft (131) and the mounting hole (111).
5. A measuring device for pore structure according to any of the claims 1-3,
the first end surface and the second end surface of the mounting hole (111) are respectively provided with a first plane sliding bearing (21) and a second plane sliding bearing (22),
the base shaft (131) comprises a first end (24) having a flange portion (23) and a second end (25) passing through the mounting hole (111) and mounted with the measuring head (132), the flange portion (23) of the first end (24) being mounted to the mounting flange (112) by the first planar sliding bearing (21), the second end (25) being mounted to the mounting flange (112) by the second planar sliding bearing (22).
6. A measuring device for hole structures according to claim 5, characterized in that the flange portion (23) of the first end (24) of the basic shaft (131) is provided with a resilient member (26) in contact with the first planar slide bearing (21).
7. A measuring device for a hole structure according to claim 1, characterized in that the measuring device has an adjusting piece (27) for adjusting the degree of the mounting clearance margin between the measuring assembly (13) and the sliding seat (11), which adjusting piece (27) is passed from outside in the radial direction through the mounting flange (112) into the mounting hole (111) and is adjustably arranged with a clearance to the base shaft (131).
8. The measuring device for a hole structure according to claim 5, characterized in that one of the second end face of the mounting hole (111) and the measuring head (132) is provided with a stopper hole (31), and the other of the second end face of the mounting hole (111) and the measuring head (132) is provided with a stopper post (32) which falls into the stopper hole (31) with a gap.
9. A measuring device for a hole structure according to claim 1, characterized in that the driver (12) has a driving rod (121) in driving connection with the sliding seat (11), which driving rod (121) and the sliding seat (11) are provided with an elastic buffer (28) between them and have a freedom of relative movement in axial direction.
10. The measuring device for hole structures according to claim 1, characterized in that a limiting member (29) for limiting the reciprocating range of the sliding seat (11) is arranged on the fixed seat (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020468684.9U CN211855251U (en) | 2020-04-02 | 2020-04-02 | Measuring device for a pore structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020468684.9U CN211855251U (en) | 2020-04-02 | 2020-04-02 | Measuring device for a pore structure |
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| Publication Number | Publication Date |
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| CN211855251U true CN211855251U (en) | 2020-11-03 |
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| CN202020468684.9U Active CN211855251U (en) | 2020-04-02 | 2020-04-02 | Measuring device for a pore structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562969A (en) * | 2022-04-27 | 2022-05-31 | 南京泰普森自动化设备有限公司 | Connecting rod mass distribution measuring method, measuring system and measuring device thereof |
-
2020
- 2020-04-02 CN CN202020468684.9U patent/CN211855251U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562969A (en) * | 2022-04-27 | 2022-05-31 | 南京泰普森自动化设备有限公司 | Connecting rod mass distribution measuring method, measuring system and measuring device thereof |
| CN114562969B (en) * | 2022-04-27 | 2022-07-19 | 南京泰普森自动化设备有限公司 | Connecting rod mass distribution measuring method, measuring system and measuring device thereof |
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