CN222086899U - Special inspection tool for testing the coaxiality of threaded holes and stepped holes in hydraulic valve bodies - Google Patents
Special inspection tool for testing the coaxiality of threaded holes and stepped holes in hydraulic valve bodies Download PDFInfo
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- CN222086899U CN222086899U CN202323537953.5U CN202323537953U CN222086899U CN 222086899 U CN222086899 U CN 222086899U CN 202323537953 U CN202323537953 U CN 202323537953U CN 222086899 U CN222086899 U CN 222086899U
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Abstract
The utility model relates to a special gauge for detecting coaxiality of a threaded hole and a stepped hole of a hydraulic valve body, which comprises a gauge main body, a guide sleeve, a transmission shaft, a coaxiality gauge head, a guide rod and a dial indicator, wherein the gauge main body is used for being matched and screwed with the threaded hole of a measured part, the guide sleeve penetrates through the gauge main body along a central axis and is in clearance fit with the same, the transmission shaft penetrates through the side wall of the bottom of the guide sleeve and is in sliding fit with the guide sleeve, one end of the transmission shaft is an inclined slope, the coaxiality gauge head is arranged at the other end of the transmission shaft and is used for being in contact with the inner wall of the stepped hole of the measured part, the guide rod and the dial indicator are sequentially arranged in the guide sleeve from bottom to top, the bottom of the guide rod is abutted against the inclined slope of the transmission shaft, and the top of the dial indicator is abutted against the gauge head fixed with the guide sleeve. Compared with the prior art, the method can simply, conveniently, rapidly and accurately detect the coaxiality of the threaded hole and the stepped hole of the hydraulic valve body and the like.
Description
Technical Field
The utility model belongs to the technical field of coaxiality detection, and relates to a special gauge for detecting coaxiality of a threaded hole and a stepped hole of a hydraulic valve body.
Background
In the processing of the hydraulic valve body, the most common is a valve seat assembly threaded hole, the threaded hole is required to have the coaxiality of the pitch diameter of the threaded hole and the inner diameter of the stepped hole of about 0.02 millimeter because of the requirement of assembly precision, the detection of the pitch diameter of the threaded hole is difficult, and then the coaxiality of the pitch diameter of the threaded hole and the stepped hole is also detected, so that the difficulty is known. At present, a method of measuring the side surface of a thread by adopting a three-coordinate screw point sampling mode to replace a pitch diameter is mostly adopted, and coaxiality is evaluated by the three-coordinate screw point sampling mode, but the method has low detection efficiency and low detection precision, so that a simple, convenient and reliable detection method is urgently needed to solve the problem of quick detection of coaxiality of the thread and a step hole in the production process of a product.
Disclosure of utility model
The utility model aims to provide a special gauge for detecting coaxiality of a threaded hole and a step hole of a hydraulic valve body, which can simply, conveniently, quickly and accurately detect coaxiality of the threaded hole and the step hole of the hydraulic valve body and the like.
The aim of the utility model can be achieved by the following technical scheme:
A special gauge for hydraulic valve body screw hole and step hole axiality detection includes:
the gauge main body is used for being matched and screwed with the threaded hole of the measured part;
a guide sleeve penetrating through the gauge main body along the central axis and in clearance fit with the gauge main body;
One end of the transmission shaft passes through the side wall of the bottom of the guide sleeve and is in sliding fit with the guide sleeve, an inclined slope surface is formed at one end of the transmission shaft, and a coaxiality gauge head for contacting the inner wall of the stepped hole of the measured part is arranged at the other end of the transmission shaft;
And the guide rod and the dial indicator are sequentially arranged in the guide sleeve from bottom to top, wherein the bottom of the guide rod abuts against the inclined slope of the transmission shaft, and the top abuts against the measuring head of the dial indicator fixed with the guide sleeve.
Further, the bottom end of the guide sleeve is closed, and the upper part of the guide sleeve is open.
Furthermore, the coaxiality gauge head is spherical and is rotationally connected with the transmission shaft, so that the coaxiality gauge head is in rolling contact with the inner wall of the stepped hole of the measured part.
Further, the central axis of the guide sleeve coincides with the central axis of the gauge main body.
Furthermore, the top of the guide sleeve extends out of the gauge main body, a positioning sleeve is fixedly sleeved on the part, extending out of the gauge main body, of the guide sleeve, and a positioning nut for positioning the positioning sleeve in the vertical direction is further arranged on the top of the gauge main body.
Furthermore, the bottom of the locating sleeve also extends outwards to form a flange bulge, and the locating sleeve is arranged on the top of the gauge main body in a threaded manner and presses the flange bulge.
More preferably, the central area of the positioning sleeve is also provided with a through hole for the upper part of the positioning sleeve to pass through.
Furthermore, the compression degree of the positioning nut on the positioning sleeve is satisfied that after the screw holes of the gauge main body and the measured part are screwed up until the clearance is eliminated, the guide sleeve and the gauge main body can rotate relatively.
Furthermore, locking screw holes are formed in the positions, corresponding to the side walls of the positioning sleeve and the guide sleeve, of the positioning sleeve, and locking screws enabling the positioning sleeve and the guide sleeve to be relatively fixed are further arranged at the locking screw holes.
Furthermore, a boss which is convenient to screw is further processed on the side face of the gauge main body.
Compared with the prior art, the utility model has the following advantages:
1. The utility model has the advantages of simple structure, small size, low production cost, great investment cost saving and good economy compared with three coordinates
2. The utility model has low requirements on the skill level of the inspector, can independently complete the inspection by mastering the common inspection skill, does not need certificates and complex training of three-coordinate inspection, can be inspected by the inspector only by looking at the operation instruction, and is simple and convenient to operate by screwing the screw and then rotating the dial indicator for one circle and reading.
3. The utility model greatly improves the inspection time of similar products, saves the detection time by 80 percent compared with a three-coordinate system, and is suitable for mass detection and full detection.
4. The utility model is suitable for detecting different step hole sizes of the same thread, when the step hole size is changed greatly, only the coaxiality gauge head with corresponding length is needed to be replaced, the utility model can be widely popularized and applied and is suitable for various apertures, and the utility model can be realized only by replacing the gauge main body with the corresponding thread for different threaded holes.
Drawings
FIG. 1 is a schematic diagram of a gauge according to the present utility model;
The figure indicates:
1-a detection tool main body, 2-a guide sleeve, 3-a guide rod, 4-a part to be detected, 5-a transmission shaft, 6-a coaxiality gauge head, 7-a gauge head, 8-a positioning nut, 9-a positioning sleeve, 10-a locking screw, 11-a dial indicator, 12-a boss and 13-a flange bulge.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present utility model is not limited to the following examples.
In the following embodiments or examples, unless otherwise specified, functional components or structures are indicated as conventional components or structures employed in the art to achieve the corresponding functions.
In order to simply, conveniently, rapidly and accurately detect coaxiality of a threaded hole and a step hole of a hydraulic valve body and the like, the utility model provides a special detection tool for detecting coaxiality of the threaded hole and the step hole of the hydraulic valve body, the structure of which can be shown in fig. 1, and the special detection tool comprises:
the gauge body 1 is used for being matched and screwed with the threaded hole of the measured part 4;
a guide sleeve 2 penetrating through the gauge body 1 along the central axis and in clearance fit with the gauge body;
A transmission shaft 5 which passes through the side wall of the bottom of the guide sleeve 2 and is in sliding fit with the guide sleeve 2, one end of the transmission shaft is an inclined slope, and the other end of the transmission shaft is provided with a coaxiality gauge head 6 which is used for contacting the inner wall of the stepped hole of the measured part 4;
And the guide rod 3 and the dial indicator 11 are sequentially arranged in the guide sleeve 2 from bottom to top, wherein the bottom of the guide rod 3 abuts against the inclined slope of the transmission shaft 5, and the top abuts against the measuring head 7 of the dial indicator 11 fixed with the guide sleeve 2.
In some embodiments, the bottom end of the guide sleeve 2 is closed and the upper portion is open.
In some embodiments, the coaxiality gauge head 6 is spherical, and is rotatably connected with the transmission shaft 5, so that the coaxiality gauge head 6 is in rolling contact with the inner wall of the stepped hole of the measured part 4.
In some specific embodiments, the central axis of the guide sleeve 2 coincides with the central axis of the gauge body 1.
In some specific embodiments, the top of the guide sleeve 2 extends out of the gauge body 1, a positioning sleeve 9 is fixedly sleeved on the part of the guide sleeve 2 extending out of the gauge body 1, and a positioning nut 8 for positioning the positioning sleeve 9 in the vertical direction is further arranged on the top of the gauge body 1.
In a more specific embodiment, the bottom of the positioning sleeve 9 further extends outwards to form a flange protrusion 13, and the positioning sleeve 9 is arranged on the top of the gauge body 1 in a threaded manner and presses the flange protrusion 13.
In a more preferred embodiment, the central area of the positioning sleeve 9 is further provided with a through hole for passing through the upper part of the positioning sleeve 9.
In a more specific embodiment, the compression degree of the positioning nut 8 on the positioning sleeve 9 is satisfied that after the screw holes of the gauge main body 1 and the measured part 4 are screwed up until the clearance is eliminated, the guide sleeve 2 and the gauge main body 1 can rotate relatively.
In a more specific embodiment, the position of the positioning sleeve 9 corresponding to the side wall of the guiding sleeve 2 is also provided with a locking screw hole, and a locking screw 10 which enables the positioning sleeve 9 and the guiding sleeve 2 to be relatively fixed is also arranged at the locking screw hole.
In some specific embodiments, the side surface of the gauge body 1 is further provided with a boss 12 which is convenient to screw.
The above embodiments may be implemented singly or in any combination of two or more.
The above embodiments are described in more detail below with reference to specific examples.
Example 1:
For simple, quick and accurate detection of coaxiality of threaded holes and step holes of a hydraulic valve body and the like, the embodiment provides a special detection tool for coaxiality detection of threaded holes and step holes of the hydraulic valve body, please refer to fig. 1, which comprises:
the gauge body 1 is used for being matched and screwed with the threaded hole of the measured part 4;
a guide sleeve 2 penetrating through the gauge body 1 along the central axis and in clearance fit with the gauge body;
A transmission shaft 5 which passes through the side wall of the bottom of the guide sleeve 2 and is in sliding fit with the guide sleeve 2, one end of the transmission shaft is an inclined slope, and the other end of the transmission shaft is provided with a coaxiality gauge head 6 which is used for contacting the inner wall of the stepped hole of the measured part 4;
And the guide rod 3 and the dial indicator 11 are sequentially arranged in the guide sleeve 2 from bottom to top, wherein the bottom of the guide rod 3 abuts against the inclined slope of the transmission shaft 5, the top abuts against the measuring head 7 of the dial indicator 11 fixed by the guide sleeve 2, and meanwhile, the bottom of the guide rod 3 is also provided with an inclined surface structure matched with the inclined slope of the transmission shaft 5.
The bottom end of the guide sleeve 2 is closed, and the upper part is opened. The coaxiality gauge head 6 is spherical and is rotationally connected with the transmission shaft 5, so that the coaxiality gauge head 6 is in rolling contact with the inner wall of the stepped hole of the measured part 4. The central axis of the guide sleeve 2 coincides with the central axis of the gauge body 1. The top of the guide sleeve 2 extends out of the gauge body 1, a positioning sleeve 9 is fixedly sleeved on the part of the guide sleeve 2 extending out of the gauge body 1, and a positioning nut 8 for positioning the positioning sleeve 9 in the vertical direction is further arranged on the top of the gauge body 1. Illustratively, the bottom of the positioning sleeve 9 further extends outwards to form a flange protrusion 13, a through hole for the upper portion of the positioning sleeve 9 to pass through is further processed in the central area of the positioning sleeve 9, and the positioning sleeve 9 is arranged on the top of the gauge body 1 in a threaded manner and presses the flange protrusion 13. The compression degree of the positioning nut 8 on the positioning sleeve 9 is satisfied that after the screw holes of the gauge main body 1 and the measured part 4 are screwed up until the clearance is eliminated, the guide sleeve 2 and the gauge main body 1 can rotate relatively. The corresponding positions of the positioning sleeve 9 and the side wall of the guide sleeve 2 are also provided with locking screw holes, and locking screws 10 which enable the positioning sleeve 9 and the guide sleeve 2 to be relatively fixed are also arranged at the locking screw holes. The side surface of the gauge main body 1 is also provided with a boss 12 which is convenient to screw.
The working process of the embodiment is as follows:
As shown in fig. 1, the main body 1 of the gauge is screwed into the threaded hole of the measured part 4, so as to realize full tightening, eliminate the detection gap, achieve the purpose that the reference is converted to the center of the main body 1 of the gauge, meanwhile, the guide sleeve 2 is deeply penetrated into the stepped hole below the threaded hole, the measuring head 7 of the dial indicator 11 is tightly abutted against the guide rod 3 downwards at this moment, so that the coaxiality gauge head 6 mounted on the guide sleeve 2 contacts the inner wall of the stepped hole, then the dial indicator 11 and the guide sleeve 2 are driven to rotate by rotating the positioning sleeve 9, and then the transmission shaft 5 and the coaxiality gauge head 6 are driven to rotate together, and the coaxiality gauge head 6 is compressed to different positions due to the change of the inner wall of the stepped hole from the rotation center of the gauge, so that the guide rod 3 is driven to move up and down by the inclined slope surface of the guide rod, then the movement is transmitted to the measuring head 7 of the dial indicator 11, and the reading of the dial indicator 11 is realized according to the compression amount of the measuring head, and the maximum quantity in one rotation is subtracted by the minimum value, namely the coaxiality value of the stepped hole of the product for the threaded hole reference.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.
Claims (10)
1. A special gauge for hydraulic valve body screw hole and step hole axiality detection, its characterized in that includes:
the gauge main body is used for being matched and screwed with the threaded hole of the measured part;
a guide sleeve penetrating through the gauge main body along the central axis and in clearance fit with the gauge main body;
One end of the transmission shaft passes through the side wall of the bottom of the guide sleeve and is in sliding fit with the guide sleeve, an inclined slope surface is formed at one end of the transmission shaft, and a coaxiality gauge head for contacting the inner wall of the stepped hole of the measured part is arranged at the other end of the transmission shaft;
And the guide rod and the dial indicator are sequentially arranged in the guide sleeve from bottom to top, wherein the bottom of the guide rod abuts against the inclined slope of the transmission shaft, and the top abuts against the measuring head of the dial indicator fixed with the guide sleeve.
2. The special gauge for detecting coaxiality of a threaded hole and a stepped hole of a hydraulic valve body according to claim 1, wherein the bottom end of the guide sleeve is closed, and the upper part of the guide sleeve is opened.
3. The special gauge for detecting the coaxiality of the threaded hole and the stepped hole of the hydraulic valve body according to claim 1, wherein the coaxiality gauge head is spherical and is rotationally connected with the transmission shaft, so that the coaxiality gauge head is in rolling contact with the inner wall of the stepped hole of the measured part.
4. The special gauge for detecting coaxiality of a threaded hole and a stepped hole of a hydraulic valve body according to claim 1, wherein the central axis of the guide sleeve coincides with the central axis of the gauge body.
5. The special gauge for detecting coaxiality of a threaded hole and a stepped hole of a hydraulic valve body according to claim 1, wherein the top of the guide sleeve extends out of the gauge main body, a positioning sleeve is fixedly sleeved on the part of the guide sleeve extending out of the gauge main body, and a positioning nut for positioning the positioning sleeve in the vertical direction is further arranged on the top of the gauge main body.
6. The special gauge for detecting coaxiality of a threaded hole and a stepped hole of a hydraulic valve body according to claim 5, wherein the bottom of the positioning sleeve further extends outwards to form a flange bulge, and the positioning sleeve is arranged on the top of the gauge body in a threaded manner and presses the flange bulge.
7. The special gauge for detecting coaxiality of a threaded hole and a stepped hole of a hydraulic valve body according to claim 6, wherein a through hole for the upper part of the positioning sleeve to pass through is further formed in the central area of the positioning sleeve.
8. The special gauge for detecting coaxiality of a threaded hole and a stepped hole of a hydraulic valve body according to claim 5, wherein the compression degree of the positioning nut on the positioning sleeve is met, and after the threaded holes of the gauge main body and the measured part are screwed down until a gap is eliminated, the guide sleeve and the gauge main body can rotate relatively.
9. The special gauge for detecting coaxiality of a threaded hole and a stepped hole of a hydraulic valve body according to claim 5, wherein a locking screw hole is further formed in a position, corresponding to the side wall of the positioning sleeve and the guide sleeve, of the positioning sleeve, and a locking screw for enabling the positioning sleeve and the guide sleeve to be relatively fixed is further arranged at the locking screw hole.
10. The special gauge for detecting coaxiality of a threaded hole and a stepped hole of a hydraulic valve body according to claim 1, wherein a boss convenient to screw is further processed on the side surface of the gauge main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323537953.5U CN222086899U (en) | 2023-12-25 | 2023-12-25 | Special inspection tool for testing the coaxiality of threaded holes and stepped holes in hydraulic valve bodies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323537953.5U CN222086899U (en) | 2023-12-25 | 2023-12-25 | Special inspection tool for testing the coaxiality of threaded holes and stepped holes in hydraulic valve bodies |
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| Publication Number | Publication Date |
|---|---|
| CN222086899U true CN222086899U (en) | 2024-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323537953.5U Active CN222086899U (en) | 2023-12-25 | 2023-12-25 | Special inspection tool for testing the coaxiality of threaded holes and stepped holes in hydraulic valve bodies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222086899U (en) |
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2023
- 2023-12-25 CN CN202323537953.5U patent/CN222086899U/en active Active
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