CN216694762U - Aperture measurement tool for large-diameter deep hole in workpiece - Google Patents
Aperture measurement tool for large-diameter deep hole in workpiece Download PDFInfo
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- CN216694762U CN216694762U CN202122889089.XU CN202122889089U CN216694762U CN 216694762 U CN216694762 U CN 216694762U CN 202122889089 U CN202122889089 U CN 202122889089U CN 216694762 U CN216694762 U CN 216694762U
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- positioning block
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Abstract
The utility model relates to a tool for measuring the aperture of a large-diameter deep hole on a workpiece, which is characterized in that: the lower end surface of the meter frame main body is a positioning reference plane; the upper end of the first lower probe rod is vertically and fixedly connected with the lower part of the meter frame main body, which is close to the left end of the meter frame main body, and the upper end of the second lower probe rod is fixedly connected with the lower part of the meter frame main body, which is close to the left end of the meter frame main body, in a manner of adjusting the distance relative to the first lower probe rod; the head of the positioning screw is hemispherical, and the positioning screw is horizontally and fixedly arranged on the second probe rod in a manner that the head of the positioning screw faces outwards and can be adjusted in a sliding manner along the vertical direction through the locking nut; the meter positioning block is horizontally and fixedly arranged on the inner side of the first probe rod in a manner of being slidably adjusted in the vertical direction through the meter positioning block clamping head; the upper end of the gauge positioning block is a dial gauge mounting surface; the dial indicator is fixedly arranged on the dial indicator mounting surface in a mode that the measuring head extends out of the first lower probe rod; the measuring head of the dial indicator and the thread head of the positioning screw are coaxially arranged. The tool can realize convenient and efficient online measurement of the large-diameter deep hole.
Description
Technical Field
The utility model belongs to the technical field of precision measurement, and particularly relates to a tool for measuring the aperture of a large-diameter deep hole on a workpiece.
Background
At present, an inner diameter micrometer and an inner diameter gauge are generally selected for high-precision measurement of the hole diameter on a workpiece. The inside micrometer is divided into a two-jaw inside micrometer and a three-jaw inside micrometer, and has the measurement advantages of high precision and reliability. For the diameter measurement of the large-diameter deep hole on the large-diameter thin-wall part, the acting force of the three-jaw inside micrometer is large, a lengthening rod is needed for some parts, the measurement precision has large errors, and the deformation of a workpiece is possibly caused due to the self weight and the action of the measuring force. The measuring mode of the inside diameter meter is relatively simple, and for two-point measurement, a dial indicator is generally prepared, and the precision can reach 0.01 mm. However, the inside diameter gauge has high requirements on measuring personnel in measurement, the measurement precision is limited, and the precision cannot be guaranteed for the tolerance with the precision of less than 0.01.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide the hole diameter measuring tool for the large-diameter deep hole on the workpiece, which has high measuring precision, can realize convenient and efficient online measurement and has better applicability.
The above purpose of the utility model is realized by the following technical scheme:
the utility model provides a frock is measured in aperture of major diameter deep hole on work piece which characterized in that: the dial gauge comprises a gauge stand main body, a first lower probe rod, a second lower probe rod, a positioning screw, a locking nut, a gauge positioning block clamping head and a dial gauge;
the gauge stand main body is strip-shaped, and the lower end face of the gauge stand main body is a positioning reference plane contacted with a workpiece; the upper end of the first lower probe rod is vertically and fixedly connected with the lower part of the meter frame main body close to the left end of the meter frame main body, and the upper end of the second lower probe rod is fixedly connected with the lower part of the meter frame main body close to the left end of the meter frame main body in a manner of adjusting the distance relative to the first lower probe rod; the positioning screw is in a screw structure with a hemispherical screw head, and is horizontally and fixedly arranged on the second probe rod in a manner that the screw head faces outwards and can be adjusted in a sliding manner along the vertical direction through a locking nut; the meter positioning block is horizontally and fixedly arranged on the inner side of the first probe rod in a manner of being slidably adjusted in the vertical direction through the meter positioning block clamping head; the upper end of the gauge positioning block is a dial gauge mounting surface; the dial indicator is fixedly arranged on the dial indicator mounting surface in a mode that the measuring head extends out of the first lower probe rod; and the measuring head of the dial indicator and the thread head of the positioning screw are coaxially arranged.
Further: an I-shaped long groove along the long edge direction is arranged on the meter frame main body; the upper end of the second probe rod is provided with a square boss, the square boss is embedded into an I-shaped long groove on the meter frame main body from the lower end, and the second probe rod is fixedly connected to the meter frame main body in an adjustable mode through a screw connected into a threaded hole on the square boss; the outer side of the I-shaped long groove is provided with a countersunk hole, the upper end of the first probe rod is correspondingly provided with a threaded hole, and the first lower probe rod is fixedly connected below the meter frame main body through a mounting screw.
Further: the first lower probe rod and the second lower probe rod are both provided with an I-shaped elongated slot along the vertical direction; the positioning screw penetrates through an elongated groove of the I-shaped groove in the second lower probe rod and is fixed through a locking nut; the outer end of the meter positioning block is provided with a square boss, and the outer end of the square boss is provided with a threaded hole; the meter positioning block clamping head is a stepped columnar clamping head and is provided with a central hole; the square boss of the meter positioning block is inserted into the I-shaped long groove on the first lower probe rod from the inner side, the meter positioning block clamping head is inserted into the I-shaped long groove on the first lower probe rod from the outer side, and the meter positioning block and the I-shaped long groove are connected through screws so that the meter positioning block is fixed on the inner side of the first lower probe rod.
The utility model has the advantages and positive effects that:
1. the utility model can realize the diameter measurement of large diameter and deep hole through the design and combined use of the gauge stand body and the two parallel lower probe rods, can realize real-time online measurement in the part processing process, can avoid errors caused by repeated clamping of parts, and solves the measurement problems and error accumulation problems in the traditional measurement mode;
2. according to the utility model, through the design of the I-shaped groove on the first probe rod and the I-shaped groove on the second probe rod, the measurement of the diameters of holes with different depths can be realized, and the use requirements under different scenes can be met;
3. according to the utility model, through the design of the I-shaped groove on the meter frame main body, the distance of the second probe rod relative to the first probe rod can be adjusted, so that the measurement of holes with different diameters can be realized, and the practicability and the universality of the tool can be improved;
4. according to the utility model, the head of the thread is changed into a hemispherical shape by changing a standard screw, so that point contact is ensured when the head of the thread is in contact with the inner surface of the hole to be measured, and the stability of the measurement precision can be ensured;
5. the surface of the contact surface of the gauge stand main body and the workpiece in the utility model requires that the surface roughness reaches 0.003mm, thus fully ensuring the stability and accuracy of the benchmark during contact measurement and ensuring the reliability and accuracy of the final measurement result.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention (without dial indicator);
FIG. 2 is a schematic structural view of the stand body of FIG. 1;
FIG. 3 is a schematic view of the first lower probe of FIG. 1;
FIG. 4 is a schematic view of the second lower probe of FIG. 1;
FIG. 5 is a schematic view of the set screw of FIG. 1;
FIG. 6 is a schematic view of the positioning block of FIG. 1;
FIG. 7 is a schematic view of the construction of the table positioning block clamping head of FIG. 1;
FIG. 8 is a schematic structural view of the combination of the measuring tool and the dial indicator;
FIG. 9 is a diagram of a state 1 of deep hole diameter measurement of a workpiece by using the tool of the utility model;
FIG. 10 is a view of the deep hole diameter of a workpiece measured by the tool of the present invention in a state shown in FIG. 2.
Detailed Description
The structure of the present invention will be further described by way of examples with reference to the accompanying drawings. It is to be understood that this embodiment is illustrative and not restrictive.
The utility model provides a work piece that big diameter deep hole's aperture measurement frock on work piece, this measurement frock measured work piece possess following characteristic: the part has the characteristic of a large-diameter deep hole; the diameter part to be measured is positioned in the deep hole, and a common measuring tool cannot carry out contact measurement; the surface of the part is provided with or can be specially provided with a plane vertical to the axis of the part to be measured of the deep hole, and the plane is used as a positioning reference plane of the measuring tool.
The measurement tool, please refer to fig. 1-10, mainly includes: the gauge stand comprises a gauge stand main body 1, a first lower probe rod 2, a second lower probe rod 3, a positioning screw 4, a locking nut 5, a gauge positioning block 6, a gauge positioning block clamping head 7 and a dial gauge 8. In performing the measurement, the dial gauge 8 is mounted on the gauge positioning block.
The table frame main part, as shown in fig. 2, the table frame main part adopts rectangular shape block structure, and its terminal surface is the location reference plane with the work piece contact down, and this location reference plane requires that the plane degree reaches 0.003um, ensures the positioning accuracy of frock. The long groove is arranged along the long side direction, the long groove preferably adopts but is not limited to an I-shaped long groove 1.2 and is used for installing and fixing a second probe rod, and the second probe rod can move and be fixed at any position in the range of the I-shaped groove, so that the measuring stroke of the measuring tool can be adjusted in a large range, and the measuring requirements of different sizes are met. The gauge stand main part is located the outside of elongated slot and has counter bore 1.1 for be connected fixedly with first probe rod, guarantee the stability between amesdial and the gauge stand main part when measuring.
As shown in fig. 3, the first lower probe rod is of a strip-shaped block structure, the upper end of the first lower probe rod is provided with a threaded hole 2.1, and the first lower probe rod is connected with a countersunk hole of the watch frame main body through a screw, so that the stability of the first lower probe rod and the countersunk hole in the measuring process is ensured; the first feeler lever is last to have "worker" type long groove 2.2, "worker" type long groove along vertical setting, and this "worker" type long groove is used for installation table locating piece and table locating piece to press from both sides tight head, and can realize the installation table locating piece and table locating piece to press from both sides tight head's vertical positioning and fixed to the realization can improve the practicality and the commonality of frock to the measurement of different degree of depth hole diameters.
As shown in fig. 4, the first lower probe rod is a strip-shaped block structure, the upper end of the second lower probe rod is provided with a square boss 3.1 which is in positioning fit with the I-shaped groove of the gauge stand main body, the middle part of the square boss is provided with a threaded hole, and the second lower probe rod is fixed by matching with a standard screw, so that the second lower probe rod can slide in the elongated groove of the gauge stand main body at will and can be fixed at any position in the groove, the measurement range can be adjusted, and the second lower probe rod is suitable for deep hole measurement of different diameters. Have "worker" type long flute 3.2 on the second probe rod, this "worker" type long flute is along vertical setting, and this "worker" type long flute is used for installing set screw and lock nut, and can realize set screw and lock nut's upper and lower accent position and fixed to the realization can improve the practicality and the commonality of frock to the measurement of the different degree of depth hole diameters.
As shown in the attached drawing 5, the positioning screw is formed by modifying a standard screw, and the thread head 4.1 of the standard screw is modified into a hemispherical shape, so that the positioning screw is in point contact when positioning the table frame, and the measuring error is reduced. And (3) penetrating the positioning screw into the I-shaped elongated slot on the second probe rod in a manner that the hemispherical end is outward, and locking the positioning screw through a locking nut, wherein the locking nut is a standard nut.
The watch positioning block and the watch positioning block clamping head are respectively shown in the attached drawings 6 and 7. The position of table locating piece for installing the amesdial, be provided with mounting hole 6.2 on the table locating piece, the mounting hole is by coaxial round hole and lower round hole of being provided with, the diameter of going up the round hole is greater than the diameter of round hole down, wear to adorn the screw rod in the mounting hole, the upper end of screw rod is fixed with the fixture block of taking the V-arrangement opening, this V-arrangement trompil cooperates with the V-arrangement boss of amesdial gauge stand lower extreme, through connecting lock nut at the lower extreme of screw rod, make the fixture block imbed in the round hole with elastic deformation's mode, carry out the card to the gauge stand lower extreme of amesdial admittedly, fix the amesdial on the table locating piece with measuring head mode outwards. The outer end of the watch positioning block is provided with a square boss 6.1 which is inserted into an I-shaped elongated slot on the first lower feeler lever from the inner side to realize the positioning of the watch positioning block. The outer end of the square boss is provided with a threaded hole for connecting with a meter positioning block,
the meter positioning block clamping head is a stepped columnar clamping head structure formed by a large-diameter cylinder 7.1 and a small-diameter cylinder 7.2 which are concentrically arranged, wherein the outer diameter of the large-diameter cylinder is matched with the size of a wide groove on the outer side of an I-shaped long groove on the first lower feeler lever, the large-diameter cylinder is embedded into the wide groove on the outer side of the I-shaped long groove, the outer diameter of the small-diameter cylinder is matched with the size of a narrow groove in the middle of the I-shaped long groove on the first lower feeler lever, the small-diameter cylinder is embedded into the narrow groove in the middle of the I-shaped long groove, a center hole is formed in the meter positioning block clamping head, and the meter positioning block is connected with a threaded hole in the meter positioning block through a mounting screw so that the meter positioning block is clamped and fixed on the first feeler lever.
The specific implementation steps of the tool for measuring the aperture of the deep hole are as follows:
step 4, preparing a standard ring gauge, measuring the value of the standard ring gauge by using the tool and dial gauge assembly, and recording the reading 1 of the dial gauge; the ring gauge is selected according to the inner diameter of a workpiece to be machined, and a proper specification is selected; if the standard size is not the standard size, the target size can be automatically processed; the size of the processed ring gauge is measured.
Step 5, measuring the deep hole part of the part to be measured by using the tool and dial indicator assembly, specifically, contacting a measuring head of the dial indicator with one side of the deep hole of the part, contacting a threaded head of a positioning screw with the other side of the deep hole of the part, reading out the maximum numerical value in the same plane, and recording the reading 2 of the dial indicator;
step 6, calculating the aperture of the deep hole on the part as follows: gauge size + reading 1-reading 2.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit of the utility model and the scope of the appended claims, and therefore the scope of the utility model is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (3)
1. The utility model provides a frock is measured in aperture of major diameter deep hole on work piece which characterized in that: the dial gauge comprises a gauge stand main body, a first lower probe rod, a second lower probe rod, a positioning screw, a locking nut, a gauge positioning block clamping head and a dial gauge;
the gauge stand main body is strip-shaped, and the lower end face of the gauge stand main body is a positioning reference plane contacted with a workpiece; the upper end of the first lower probe rod is vertically and fixedly connected with the lower part of the meter frame main body close to the left end of the meter frame main body, and the upper end of the second lower probe rod is fixedly connected with the lower part of the meter frame main body close to the left end of the meter frame main body in a manner of adjusting the distance relative to the first lower probe rod; the positioning screw is in a screw structure with a hemispherical screw head, and is horizontally and fixedly arranged on the second probe rod in a manner that the screw head faces outwards and can be adjusted in a sliding manner along the vertical direction through a locking nut; the meter positioning block is horizontally and fixedly arranged on the inner side of the first probe rod in a manner of being slidably adjusted in the vertical direction through the meter positioning block clamping head; the upper end of the gauge positioning block is a dial gauge mounting surface; the dial indicator is fixedly arranged on the dial indicator mounting surface in a mode that the measuring head extends out of the first lower probe rod; and the measuring head of the dial indicator and the thread head of the positioning screw are coaxially arranged.
2. The tool for measuring the aperture of the large-diameter deep hole in the workpiece according to claim 1, wherein the tool comprises: an I-shaped long groove along the long edge direction is arranged on the meter frame main body; the upper end of the second probe rod is provided with a square boss, the square boss is embedded into an I-shaped elongated slot on the meter frame main body from the lower end, and the second probe rod is fixedly connected to the meter frame main body in an adjustable manner through a screw connected into a threaded hole on the square boss; the outer side of the I-shaped long groove is provided with a countersunk hole, the upper end of the first probe rod is correspondingly provided with a threaded hole, and the first lower probe rod is fixedly connected below the meter frame main body through a mounting screw.
3. The tool for measuring the aperture of the large-diameter deep hole in the workpiece according to claim 1, characterized in that: the first lower probe rod and the second lower probe rod are both provided with an I-shaped elongated slot along the vertical direction; the positioning screw penetrates through an elongated groove of the I-shaped groove in the second lower probe rod and is fixed through a locking nut; the outer end of the meter positioning block is provided with a square boss, and the outer end of the square boss is provided with a threaded hole; the meter positioning block clamping head is a stepped columnar clamping head and is provided with a central hole; the square boss of the meter positioning block is inserted into the I-shaped long groove on the first lower probe rod from the inner side, the meter positioning block clamping head is inserted into the I-shaped long groove on the first lower probe rod from the outer side, and the meter positioning block and the I-shaped long groove are connected through screws so that the meter positioning block is fixed on the inner side of the first lower probe rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122889089.XU CN216694762U (en) | 2021-11-19 | 2021-11-19 | Aperture measurement tool for large-diameter deep hole in workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122889089.XU CN216694762U (en) | 2021-11-19 | 2021-11-19 | Aperture measurement tool for large-diameter deep hole in workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216694762U true CN216694762U (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122889089.XU Active CN216694762U (en) | 2021-11-19 | 2021-11-19 | Aperture measurement tool for large-diameter deep hole in workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216694762U (en) |
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2021
- 2021-11-19 CN CN202122889089.XU patent/CN216694762U/en active Active
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