CN215114362U - Taper angle detection device for internal thread bottom hole - Google Patents
Taper angle detection device for internal thread bottom hole Download PDFInfo
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- CN215114362U CN215114362U CN202121525757.4U CN202121525757U CN215114362U CN 215114362 U CN215114362 U CN 215114362U CN 202121525757 U CN202121525757 U CN 202121525757U CN 215114362 U CN215114362 U CN 215114362U
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Abstract
The utility model relates to an internal thread bottom hole cone angle detection device belongs to and examines the utensil field. The device's the inside measuring stick that is provided with a pair of structure is the same of base, measuring stick one and measuring stick two extend to the base outside after running through the base perpendicularly from the base is inside respectively, the lower extreme of measuring stick one and measuring stick two is the gauge head respectively, the top of measuring stick one and measuring stick two is provided with integrative horizontal spacing platform one and horizontal spacing platform two respectively, horizontal spacing platform one and horizontal spacing platform two pass through the elasticity pressure of spring and press on the base, it is fixed with a pair of percentage table one and percentage table two with measuring stick one and measuring stick two looks complex respectively to cover on, the gauge needle of percentage table one and percentage table two stretches into the base inside and horizontal spacing platform one and horizontal spacing platform two contacts perpendicularly respectively, the lower extreme of base is the cylinder structure, the lower extreme processing of base has the external screw thread, the lower extreme and the internal thread bottom hole screw-thread fit of base. The device measures accurately and low cost.
Description
Technical Field
The utility model belongs to examine the utensil field, relate to an internal thread bottom hole cone angle detection device.
Background
The conical surface sealing is a common connection mode, has strict requirements on the angle of the conical surface, and is generally measured by three coordinates.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a detect low cost, measure accurate internal thread bottom hole cone angle detection device.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a taper angle detection device for an internal thread bottom hole comprises a base, wherein the upper part of the base is a space for accommodating an upper cover, the upper cover and the base are matched with each other, a pair of measuring rods with the same structure are arranged in the base, a first measuring rod and a second measuring rod respectively vertically penetrate through the base from the inside of the base and extend to the outside of the base, the first measuring rod and the second measuring rod can respectively slide up and down in respective penetrating holes, measuring heads are respectively arranged at the lower ends of the first measuring rod and the second measuring rod, the measuring heads on the measuring rods are structurally designed by adopting spherical heads, the top ends of the first measuring rod and the second measuring rod are respectively provided with a first horizontal limiting table and a second horizontal limiting table which are integrated, the first horizontal limiting table and the second horizontal limiting table are pressed on the base through the elastic force of springs, the two ends of the springs are respectively abutted to the inner bottom surfaces of the upper cover and the base, a first dial indicator and a second dial indicator which are respectively matched with the first measuring rod and the second measuring rod are fixed on the upper cover, the measuring pins of the first dial indicator and the second dial indicator respectively vertically extend into the base to be in contact with the first horizontal limiting table and the second horizontal limiting table, the lower end of the base is of a cylindrical structure, external threads are machined at the lower end of the base, and the lower end of the base is in threaded fit with the bottom hole of the internal threads.
Furthermore, a first guide rod and a second guide rod are respectively arranged on the upper end surfaces of the first horizontal limiting table and the second horizontal limiting table, vertical guide holes are respectively formed in positions, corresponding to the first guide rod and the second guide rod, of the upper cover, the first guide rod and the second guide rod are sleeved with springs, and two ends of the springs are respectively abutted to the bottom surfaces of the first horizontal limiting table and the second horizontal limiting table.
Furthermore, the first guide rod and the second guide rod are respectively arranged on the extension lines of the first measuring rod and the second measuring rod.
Furthermore, the first measuring rod and the second measuring rod are respectively close to the central line of the base.
Further, the axes of the two mounting holes of the first measuring rod and the second measuring rod are positioned on the non-concentric circumferences of the central cross section of the base.
The beneficial effects of the utility model reside in that:
the utility model provides a detect low cost, measure accurately, utilize the school to carry out the school zero to the piece, eliminated the measuring stick in the ascending length difference of gamma side to measuring result's influence, improved the detection precision.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of the embodiment of the present invention during calibration;
FIG. 2 is a schematic structural diagram of the embodiment of the present invention during inspection;
fig. 3 is an enlarged schematic view of a point a in fig. 2.
Reference numerals:
1. a base; 2-1, a first horizontal limiting table; 2-11, measuring rod one; 2-12, a first guide rod; 2-2, a horizontal limiting table II; 2-21, a second measuring rod; 2-22 and a second guide rod; 3. a spring; 4. an upper cover; 5. a bushing; 6-1, and a first dial indicator; 6-2 and a second dial indicator; 7. and (6) checking the block.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1 to 3, a taper angle detection device for an internal thread bottom hole includes a base 1, the base 1 is similar to an inverted frustum structure, an upper portion of the base 1 is a space for accommodating an upper cover 4, and the upper cover 4 and the base 1 are matched with each other. The measuring device comprises a base 1, a pair of measuring rods with the same structure is arranged in the base 1, a first measuring rod 2-11 and a second measuring rod 2-21 vertically penetrate through the base 1 from the inside of the base 1 and then extend to the outside of the base 1, through holes matched with the first measuring rod 2-11 and the second measuring rod 2-21 are formed in the base 1, and the first measuring rod 2-11 and the second measuring rod 2-21 can slide up and down in the through holes. And the lower ends of the first measuring rod 2-11 and the second measuring rod 2-21 are respectively provided with a measuring head which is used for detecting the angle of the taper angle of the threaded bottom hole. The measuring head on the measuring rod is designed in a spherical head structure, the diameter of the measuring head is designed according to needs, the measuring head of the spherical head can ensure that the measuring head and a conical surface tangent point have the same alpha value on the left and right sides of the cross section, and the influence of manufacturing errors on measuring results is reduced. The value alpha is the horizontal distance between the tangent point of the measuring head and the conical surface and the axis of the measuring rod.
The first measuring rod 2-11 and the second measuring rod 2-21 are respectively arranged close to the central line of the base 1. The top ends of the first measuring rod 2-11 and the second measuring rod 2-21 are respectively provided with a first horizontal limiting platform 2-1 and a second horizontal limiting platform 2-2 which are integrated, the first horizontal limiting platform 2-1 and the second horizontal limiting platform 2-2 extend towards the left side and the right side respectively, the upper end surfaces of the first horizontal limiting platform 2-1 and the second horizontal limiting platform 2-2 are respectively provided with a first guide rod 2-12 and a second guide rod 2-22, and the first guide rod 2-12 and the second guide rod 2-22 are respectively arranged on the extension lines of the first measuring rod 2-11 and the second measuring rod 2-21. Vertical guide holes are respectively formed in the positions, corresponding to the first guide rods 2-12 and the second guide rods 2-22, of the upper cover 4, the upper ends of the first guide rods 2-12 and the second guide rods 2-22 extend into the guide holes respectively, and the upper ends of the first guide rods 2-12 and the second guide rods 2-22 can slide up and down in the guide holes. The springs 3 are respectively sleeved on the first guide rods 2-12 and the second guide rods 2-22 between the upper cover 4 and the first horizontal limiting table 2-1 and the second horizontal limiting table 2-2. Two ends of the spring 3 are respectively abutted against the bottom ends of the horizontal limiting table and the upper cover 4. Under the action of the spring 3, the first horizontal limiting table 2-1 and the second horizontal limiting table 2-2 are pressed on the inner bottom surface of the base 1.
The upper cover 4 is provided with a pair of first dial indicator 6-1 and second dial indicator 6-2 which are respectively matched with the first measuring rod 2-11 and the second measuring rod 2-21, measuring pins of the first dial indicator 6-1 and the second dial indicator 6-2 respectively vertically extend into the base 1, and measuring pins of the first dial indicator 6-1 and the second dial indicator 6-2 are respectively contacted with the first horizontal limiting table 2-1 and the second horizontal limiting table 2-2. The dial indicator 6-1 and the dial indicator 6-2 are fixedly connected with the upper cover 4 through bushings 5.
The lower extreme of base 1 is the cylinder structure, and the lower extreme processing of base 1 has the external screw thread, and the lower extreme and the internal thread bottom hole screw-thread fit of base 1.
The utility model discloses a detection method:
the utility model discloses an utilize the dial indicator atress to produce the displacement after to through the scale on the dial indicator, realize the indirect measurement to the conical surface cone angle.
First, the measuring device is pressed against the proof mass 7 so that the stylus is in full contact with the proof mass 7, and the two dial gauges are zeroed. The calibration block 7 is used for zero calibration, so that the influence of different lengths of the measuring rod in the gamma direction on the measuring result is eliminated, and the detection precision is improved.
Secondly, as shown in fig. 2, the lower end of the base 1 is screwed into the part to be measured, after the probe on the measuring rod contacts the conical surface of the part, because the base 1 is screwed continuously, the first horizontal limiting table 2-1 and the second horizontal limiting table 2-2 which are originally kept attached to the bottom surface of the base 1 under the action of the spring 3 are separated from the surface of the base 1 respectively, and the dial indicator is pushed to move upwards. The displacement amount of the first horizontal limiting table 2-1 and the second horizontal limiting table 2-2 is displayed through the scales of the dial indicator, and the data of the first dial indicator 6-1 and the second dial indicator 6-2 correspond to the gamma 1 and gamma 2 parameters respectively.
The horizontal distances between the axes of the first measuring rod 2-11 and the second measuring rod 2-21 and the axis of the base 1 are respectively beta 1 and beta 2, the beta 1 and the beta 2 are fixed parameters, the axes of the two through holes of the measuring rod on the base 1 are positioned on the non-concentric circumference of the central cross section of the base 1, namely the beta 1 is not equal to the beta 2, the distribution of the non-concentric cross sections is favorable for utilizing the measuring space to the maximum extent, and the rigidity of the measuring tool is improved.
Based on the designed beta 1 and beta 2 and the measured gamma 1 and gamma 2 parameters, the distances beta 1+ alpha and beta 2+ alpha from the tangent point of the measuring rod to the center of the base 1 are measured, and the inner hole taper angle can be calculated by utilizing an inverse trigonometric function.
The formula for calculating the inverse trigonometric function is: taper angle
The simplified calculation formula is
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (5)
1. The utility model provides an internal thread bottom hole cone angle detection device which characterized in that: the measuring device comprises a base (1), the upper part of the base (1) is a space for accommodating an upper cover (4), the upper cover (4) is matched with the base (1), a pair of measuring rods with the same structure are arranged in the base (1), a first measuring rod (2-11) and a second measuring rod (2-21) respectively vertically penetrate through the base (1) from the inside of the base (1) and extend to the outside of the base (1), the first measuring rod (2-11) and the second measuring rod (2-21) can respectively slide up and down in respective penetrating holes, the lower ends of the first measuring rod (2-11) and the second measuring rod (2-21) are respectively measuring heads, the measuring heads on the measuring rods are designed by adopting spherical heads, the top ends of the first measuring rod (2-11) and the second measuring rod (2-21) are respectively provided with a first horizontal limiting table (2-1) and a second horizontal limiting table (2-2), the horizontal limiting platform I (2-1) and the horizontal limiting platform II (2-2) are pressed on the base (1) through the elastic force of the spring (3), two ends of the spring (3) are respectively abutted to the inner bottom surfaces of the upper cover (4) and the base (1), a pair of dial indicator I (6-1) and a pair of dial indicator II (6-2) which are respectively matched with the measuring rod I (2-11) and the measuring rod II (2-21) are fixed on the upper cover (4), measuring pins of the dial indicator I (6-1) and the dial indicator II (6-2) respectively vertically extend into the base (1) to be contacted with the horizontal limiting platform I (2-1) and the horizontal limiting platform II (2-2), the lower end of the base (1) is of a cylindrical structure, external threads are machined at the lower end of the base (1), and the lower end of the base (1) is in threaded fit with an internal thread bottom hole.
2. The female thread bottom hole taper angle detection device according to claim 1, characterized in that: the upper end surfaces of the first horizontal limiting table (2-1) and the second horizontal limiting table (2-2) are respectively provided with a first guide rod (2-12) and a second guide rod (2-22), the positions, corresponding to the first guide rod (2-12) and the second guide rod (2-22), of the upper cover (4) are respectively provided with a vertical guide hole, the spring (3) is sleeved on the first guide rod (2-12) and the second guide rod (2-22) between the upper cover (4) and the first horizontal limiting table (2-1) and the second horizontal limiting table (2-2), and two ends of the spring (3) are respectively abutted to the bottom surfaces of the first horizontal limiting table and the upper cover (4).
3. The female thread bottom hole taper angle detection device according to claim 2, characterized in that: the first guide rod (2-12) and the second guide rod (2-22) are respectively arranged on the extension lines of the first measuring rod (2-11) and the second measuring rod (2-21).
4. The female thread bottom hole taper angle detection device according to claim 1, characterized in that: the first measuring rod (2-11) and the second measuring rod (2-21) are respectively close to the central line of the base (1).
5. The female thread bottom hole taper angle detection device according to claim 4, wherein: the axes of the two mounting holes of the first measuring rod (2-11) and the second measuring rod (2-21) are positioned on the non-concentric circumferences of the central cross section of the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121525757.4U CN215114362U (en) | 2021-07-06 | 2021-07-06 | Taper angle detection device for internal thread bottom hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121525757.4U CN215114362U (en) | 2021-07-06 | 2021-07-06 | Taper angle detection device for internal thread bottom hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215114362U true CN215114362U (en) | 2021-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121525757.4U Active CN215114362U (en) | 2021-07-06 | 2021-07-06 | Taper angle detection device for internal thread bottom hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215114362U (en) |
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2021
- 2021-07-06 CN CN202121525757.4U patent/CN215114362U/en active Active
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