CN211783267U - Bolt head flatness detection device - Google Patents
Bolt head flatness detection device Download PDFInfo
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- CN211783267U CN211783267U CN202020460926.XU CN202020460926U CN211783267U CN 211783267 U CN211783267 U CN 211783267U CN 202020460926 U CN202020460926 U CN 202020460926U CN 211783267 U CN211783267 U CN 211783267U
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- bolt
- seat
- micrometer
- positioning seat
- bolt head
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Abstract
The utility model discloses a bolt head flatness detection device, which comprises a positioning seat for limiting the position of a tested bolt and a sleeve head seat for fixing a micrometer, wherein the positioning seat is provided with a positioning hole for inserting the bolt, and the tested bolt is inserted into the positioning hole and limited; the positioning seat and the sleeve head seat can rotate relatively in the circumferential direction when in contact, the probe of the micrometer contacts the measured surface of the measured bolt and moves circumferentially relative to the measured bolt, the reading of the micrometer is recorded in the one-circle rotating process, and the difference value between the maximum value and the minimum value is the flatness of the bolt head. The device simple structure need not to realize with the help of other main equipment flatness detection, can measure the plane degree of bolt head fast portably.
Description
Technical Field
The utility model relates to a precision detection technical field further relates to a bolt head flatness detection device.
Background
In the prior art, the mode of detecting the flatness of the bolt head is not easy to realize rapid measurement, and the measurement process is complicated, the accuracy is not high, or the equipment is expensive. For example, the feeler gauge cannot achieve sufficient precision in measurement, and other metering measurement processes are troublesome and low in efficiency; the measurement equipment using laser and data acquisition instrument is expensive and has high cost.
For those skilled in the art, how to measure the flatness of the bolt head quickly and easily is a technical problem to be solved at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a bolt head flatness detection device can measure the plane degree of bolt head fast portably, and concrete scheme is as follows:
a bolt head flatness detection device comprises a positioning seat for limiting the position of a tested bolt and a sleeve head seat for fixing a micrometer;
the positioning seat is provided with a positioning hole for inserting the tested bolt;
the positioning seat and the sleeve head seat can rotate relatively in the circumferential direction when in contact, and the probe of the micrometer contacts the measured surface of the measured bolt and moves circumferentially relative to the measured bolt.
Optionally, a limiting groove is formed in one end, in contact with the positioning seat, of the sleeve head seat;
the inner diameter of the limiting groove is 1.2-1.8 times of the outer diameter of the tested bolt.
Optionally, the sleeve head seat is a stepped sleeve, a threaded hole is formed in a side wall of the sleeve head seat, the tightening stud is connected to the threaded hole in a threaded mode, and the tightening stud can tightly press the micrometer.
Optionally, the diameter of the positioning seat is larger than the outer diameter of the sleeve seat.
Optionally, the micrometer is a dial indicator or a dial indicator.
Optionally, a guide boss for limiting the sleeve head seat to move circumferentially is arranged at the top of the positioning seat.
Optionally, a jacking bolt for clamping the tested bolt is arranged on the positioning seat.
The core of the utility model is to provide a bolt head flatness detection device, which comprises a positioning seat for limiting the position of a tested bolt and a sleeve head seat for fixing a micrometer, wherein the positioning seat is provided with a positioning hole for inserting the bolt, and the tested bolt is inserted into the positioning hole and is limited; the positioning seat and the sleeve head seat can rotate relatively in the circumferential direction when in contact, the probe of the micrometer contacts the measured surface of the measured bolt and moves circumferentially relative to the measured bolt, the reading of the micrometer is recorded in the one-circle rotating process, and the difference value between the maximum value and the minimum value is the flatness of the bolt head. The device simple structure need not to realize with the help of other main equipment flatness detection, can measure the plane degree of bolt head fast portably.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a sectional view of the overall structure of the bolt head flatness detecting apparatus of the present invention;
fig. 2 is a block diagram of a second embodiment of the positioning socket 1.
The figure includes:
Detailed Description
The core of the utility model lies in providing a bolt head plane degree detection device, can measure the plane degree of bolt head fast portably.
In order to make those skilled in the art better understand the technical solution of the present invention, the bolt head flatness detecting device of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a cross-sectional view of the overall structure of the bolt head flatness detecting apparatus of the present invention; the device comprises a positioning seat 1 and a sleeve head seat 3, wherein the positioning seat 1 is used for limiting the position of a tested bolt and providing limiting support for the tested bolt; the sleeve head seat 3 is used for fixing the micrometer 2 and providing limiting support for the micrometer 2.
A positioning hole 11 is formed in the positioning seat 1, the positioning hole 11 is used for inserting a tested bolt, and the inner diameter of the positioning hole 11 is slightly larger than the outer diameter of the tested bolt; the positioning hole 11 is vertically arranged, the bolt part of the tested bolt is inserted into the positioning hole 11, the bolt head part of the tested bolt is positioned outside the positioning hole 11, and the tested bolt can be stably limited when being inserted into the positioning hole 11.
The positioning seat 1 and the sleeve head seat 3 can be in relative contact, the positioning seat 1 plays a role in guiding the movement of the sleeve head seat 3, the positioning seat 1 and the sleeve head seat 3 can rotate in the circumferential direction relatively when in contact, and the positioning seat 1 and the sleeve head seat 3 do planar two-dimensional movement during measurement. The sleeve head seat 3 drives the micrometer 2 to move synchronously.
The probe of the micrometer 2 faces the tested bolt, the probe of the micrometer 2 contacts the tested surface of the tested bolt and moves circumferentially relative to the tested bolt, the probe of the micrometer 2 contacts the bolt head of the tested bolt, the probe moves circumferentially along the surface of the bolt head in the circumferential movement process of the micrometer 2, the probe and the bolt head are in point contact, the movement track of the probe relative to the bolt head is an arc, and the sleeve head seat 3 moves for a complete circle relative to the bolt head during measurement and usually needs to move more than three circles.
The pressure between the probe of the micrometer 2 and the measured bolt is extremely small, the position state of the measured bolt is not influenced, the reading is generated when the probe contacts the measured bolt, the maximum reading and the minimum reading of the micrometer are obtained in the circumferential movement process of the micrometer, and the difference value between the maximum reading and the minimum reading is the flatness of the measured surface of the measured bolt.
During measurement, the positioning seat 1 is kept fixed, the measured bolt is kept relatively static, the sleeve head seat 3 is positioned above the positioning seat 1, and the sleeve head seat 3 and the micrometer 2 synchronously move circumferentially relative to the measured bolt; the utility model discloses a principle is positioning seat 1 and the relative circumferential direction of cover headstock 3 and removes, consequently if keep cover headstock 3 fixed, positioning seat 1 drives and is surveyed bolt relative circumferential direction and remove also can, and these specific embodiments all should contain within the protection scope of the utility model.
The utility model provides a bolt head flatness detection device simple structure need not just can realize the flatness with the help of other main equipment and detect, can measure the plane degree of bolt head fast portably.
On the basis of the scheme, the utility model discloses well headstock 3 sets up spacing groove 31 with the one end of positioning seat 1 contact, and spacing groove 31 is used for dodging the bolt of being surveyed, and the bottom of headstock 3 contacts with the top of positioning seat 1, is surveyed the bolt and stretches into spacing groove 31 in, and spacing groove 31's lateral wall carries out spacing direction for the arcwall face of cylinder to the first circumferential motion of cover.
The inner diameter of the limiting groove 31 is 1.2-1.8 times of the outer diameter of the tested bolt, so that a probe of the micrometer always contacts the surface of the tested bolt during measurement, and a certain distance is reserved between the probe and the axis of the tested bolt.
As shown in fig. 1, the sleeve head seat 3 is a stepped sleeve, the lower part has a large diameter, the upper part has a small diameter, and the part with the smaller upper diameter is inserted with the micrometer 2, and the micrometer 2 is positioned on the central shaft of the sleeve head seat 3; the side wall of the sleeve head seat 3 is provided with a threaded hole 32, as shown in fig. 1, the threaded hole 32 is located at a part with a smaller diameter above the sleeve head seat 3, the through direction of the threaded hole 32 is perpendicular to the length direction of the micrometer 2, a tightening stud is assembled in the threaded hole 32 in a threaded manner and can be screwed in to tighten the micrometer 2, and the micrometer 2 and the sleeve head seat 2 are relatively fixed.
Preferably, the utility model discloses well positioning seat 1's diameter is greater than the external diameter of cover headstock 3, guarantees that cover headstock 3 can be supported by positioning seat 1 all the time.
Specifically, the utility model provides a micrometer 2 is percentage table or amesdial, also can adopt other measuring device.
As shown in fig. 2, it is a structural diagram of a second embodiment of the positioning socket 1; the top of the positioning seat 1 is provided with a guide boss 12 for limiting the circumferential movement of the sleeve head seat 3, the diameter of the guide boss 12 is smaller than the outer diameter of the positioning seat 1, and the diameter of the guide boss 12 is larger than the outer diameter of the bolt head of the tested bolt. In the measuring process, the inner peripheral side surface of the limiting groove 31 is in contact with the outer peripheral surface of the guide boss 12, the circumferential guide effect is achieved, the sleeve head 3 does not contact with the measured bolt during circumferential movement, and the measuring result is more accurate.
The positioning seat 1 is provided with jacking bolts for clamping the tested bolt, as shown in fig. 2, threaded holes are arranged on the positioning seat 1 along the axial symmetry direction perpendicular to the axial line direction or the central symmetry direction, the jacking bolts can be arranged in the threaded holes, the two jacking bolts are symmetrically pressed and connected with the tested bolt, the tested bolt is ensured to be positioned on the central axis, and the tested bolt and the positioning seat 1 are relatively fixed.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The bolt head flatness detection device is characterized by comprising a positioning seat (1) for limiting the position of a tested bolt and a sleeve head seat (3) for fixing a micrometer (2);
a positioning hole (11) for inserting a tested bolt is formed in the positioning seat (1);
the positioning seat (1) and the sleeve head seat (3) can rotate relatively in the circumferential direction when in contact, and a probe of the micrometer (2) is in contact with the measured surface of the measured bolt and moves circumferentially relative to the measured bolt.
2. The bolt head flatness detecting device according to claim 1, characterized in that one end of the socket seat (3) contacting the positioning seat (1) is provided with a limiting groove (31);
the inner diameter of the limiting groove (31) is 1.2-1.8 times of the outer diameter of the tested bolt.
3. The bolt head flatness detecting device according to claim 2, characterized in that the socket base (3) is a stepped sleeve, a threaded hole (32) is formed in a side wall of the socket base (3), and a tightening stud is screwed in the threaded hole (32) and can tighten against the micrometer (2).
4. The bolt head flatness detection device according to claim 3, characterized in that the diameter of the positioning seat (1) is larger than the outer diameter of the socket seat (3).
5. The bolt head flatness detection device according to claim 3, characterized in that the micrometer (2) is a dial gauge or a dial gauge.
6. The bolt head flatness detecting device according to claim 3, characterized in that the top of the positioning seat (1) is provided with a guide boss (12) for limiting the circumferential movement of the socket seat (3).
7. The bolt head flatness detecting device according to claim 3, characterized in that the positioning seat (1) is provided with a jacking bolt for clamping the tested bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020460926.XU CN211783267U (en) | 2020-04-01 | 2020-04-01 | Bolt head flatness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020460926.XU CN211783267U (en) | 2020-04-01 | 2020-04-01 | Bolt head flatness detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211783267U true CN211783267U (en) | 2020-10-27 |
Family
ID=72928316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020460926.XU Active CN211783267U (en) | 2020-04-01 | 2020-04-01 | Bolt head flatness detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211783267U (en) |
-
2020
- 2020-04-01 CN CN202020460926.XU patent/CN211783267U/en active Active
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