CN211147536U - Auxiliary measuring tool for stepped hole - Google Patents
Auxiliary measuring tool for stepped hole Download PDFInfo
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- CN211147536U CN211147536U CN201922492970.9U CN201922492970U CN211147536U CN 211147536 U CN211147536 U CN 211147536U CN 201922492970 U CN201922492970 U CN 201922492970U CN 211147536 U CN211147536 U CN 211147536U
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- extension bar
- measuring
- fixed shaft
- extension
- hole
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Abstract
The utility model relates to a shoulder hole auxiliary measuring instrument belongs to interior aperture measuring equipment technical field. The utility model provides a current some have the internal diameter in echelonment hole not well carry out the problem of measuring. The utility model comprises a fixed shaft; the extension bars are symmetrically arranged on two sides of the fixed shaft and are hinged with the fixed shaft; a measuring arm is arranged on one measuring side of the extension bar and is hinged with the extension bar through a torsion spring, and a screw limiting device is arranged between the extension bar and the measuring arm; the built-in indicating circuit is used for prompting the measurement of the inner hole; and the indicating device is used for recording the position of the extension bar during the measurement of the inner hole.
Description
Technical Field
The utility model relates to a shoulder hole auxiliary measuring instrument belongs to interior aperture measuring equipment technical field.
Background
As new products are developed and manufacturing processes continue to increase, stepped parts consisting of several holes of different diameters are encountered. The inner holes of the parts are mostly longer, the hole structures are small outside and large inside in a step shape, and are limited by space, and the diameters of the inner holes of the parts cannot be directly measured by adopting conventional measuring tools.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the above-mentioned defect that some prior shoulder hole internal diameter measurements exist, provided a shoulder hole auxiliary measuring instrument, go deep into the internal diameter through the extension bar, through the aperture of throughput arm location hole, measure the distance of measurement arm through measuring tool to reach the size of internal diameter.
The utility model discloses an adopt following technical scheme to realize:
a stepped-hole auxiliary measuring tool, comprising:
a fixed shaft;
the extension bars are symmetrically arranged on two sides of the fixed shaft and are hinged with the fixed shaft;
a measuring arm is arranged on one measuring side of the extension bar and is hinged with the extension bar through a torsion spring, and a screw limiting device is arranged between the extension bar and the measuring arm;
the built-in indicating circuit is used for prompting the measurement of the inner hole;
the indicating device records the position of the extension bar when measuring the inner hole;
the indicating device comprises a pointer fixed on the extension bar on one side, and a graduated scale is arranged on the extension bar on the other side and penetrates through the pointer and is matched with the pointer; the built-in indicating circuit comprises a power supply fixed on the inner side of the fixed shaft, the power supply is respectively connected to the screw limiting devices on two sides through a lead, the measuring arms are electrically connected through leads, the measuring arms and the extension bar are insulated, and the leads are connected with a light emitting diode and a resistor;
the front side of the measuring arm, which is contacted with the inner hole during measurement, is made of insulating materials.
The inner side of the extension bar is hollow, and the lead passes through the hollow part of the extension bar and then is connected to the measuring arm.
The light emitting diode is arranged on one side of the fixed shaft.
The screw limiting device comprises a limiting seat fixed on the extension bar and a limiting screw connected with the limiting seat in a threaded manner.
The extension bar is a telescopic extension bar and comprises a front bar hinged with the fixed shaft, a rear bar sleeved with the front bar is arranged on the lower portion of the front bar, and the rear bar is connected with the front bar in a telescopic sliding mode.
The front rod is provided with two or more positioning holes, the inner side of the upper end of the rear rod is provided with a compression spring plate, one side of the compression spring plate is provided with a positioning ball, the positioning ball extends out of the rear rod, and the positioning ball is matched with the positioning holes.
The utility model has the advantages that:
(1) the utility model discloses a shoulder hole auxiliary measuring instrument, be provided with built-in indicating circuit, can obtain through built-in indicating circuit whether the measuring arm contacts with screw rod stop device, and confirm the position of extension bar through pointer and scale, measure the size between the measuring arm through measuring tool at last, thereby obtain the size of shoulder hole internal diameter, can adapt to the shoulder hole of different specifications;
(2) the extension bar of the auxiliary measuring tool for the shoulder hole can be extended and contracted, and the telescopic extension bar can be adapted to more shoulder holes with different specifications;
(3) supplementary measuring tool of shoulder hole, can let the volume arm contact the inside wall of shoulder hole gradually through screw rod stop device, when the contact is and continues to increase the angle of extension bar, thereby emitting diode can extinguish the critical point that can be fine judgement is extinguish and is lighted, be convenient for better carry out the precision measurement, the volume arm is when the limiting position, the circuit switch-on, emitting diode is bright, otherwise emitting diode goes out to make clear that indicating mechanism whether reaches limiting position.
Drawings
Fig. 1 is a front view of an embodiment of the present invention;
fig. 2 is a top view of an embodiment of the invention;
fig. 3 is a front view of a second embodiment of the present invention;
fig. 4 is an inside cross-sectional view of the rear rod according to the second embodiment of the present invention;
fig. 5 is an adaptation state diagram of an embodiment of the invention;
in the figure: 1. a built-in indication circuit; 1-1, a power supply; 1-2, light emitting diodes; 1-3, conducting wires; 2. lengthening a rod; 2-1, a front rod; 2-2, a rear rod; 2-3, positioning holes; 2-4, positioning a ball; 2-5, compressing the elastic sheet; 3. a screw rod limiting device; 4. a measuring arm; 5. a torsion spring; 6. a pointer; 7. a graduated scale; 8. and fixing the shaft.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example one
As shown in fig. 1-2 and 5, the utility model discloses a shoulder hole auxiliary measuring tool, include:
a fixed shaft 8;
the extension bars 2 are symmetrically arranged on two sides of the fixed shaft 8, and the extension bars 2 are hinged with the fixed shaft 8;
a measuring arm 4 is arranged on one measuring side of the extension bar 2, the measuring arm 4 is hinged with the extension bar 2 through a torsion spring 5, and a screw limiting device 3 is arranged between the extension bar 2 and the measuring arm 4;
the built-in indicating circuit 1 is used for prompting inner hole measurement;
the indicating device records the position of the extension bar 2 when measuring the inner hole;
the indicating device comprises a pointer 6 fixed on the extension bar 2 on one side, a graduated scale 7 is arranged on the extension bar 2 on the other side, and the graduated scale 7 penetrates through the pointer 6 and is matched with the pointer 6; the built-in indicating circuit 1 comprises a power supply 1-1 fixed on the inner side of a fixed shaft 8, the power supply 1-1 is respectively connected to screw limiting devices 3 on two sides through leads 1-3, the measuring arms 4 are electrically connected through the leads 1-3, the measuring arms 4 are insulated from the extension bar 2, and the leads 1-3 are connected with light emitting diodes 1-2 and resistors; the front side of the measuring arm 4, which is contacted with the inner hole during measurement, is made of insulating materials.
The inner side of the extension bar 2 is hollow, and the lead wires 1-3 are connected to the measuring arm 4 after passing through the hollow part of the extension bar 2.
The light emitting diode 1-2 is arranged on one side of the fixed shaft 8.
The screw limiting device 3 comprises a limiting seat fixed on the extension bar and a limiting screw connected with the limiting seat through threads.
The working process is as follows:
when the arm 4 contacts the screw limiting device 3, the built-in indicating circuit 1 can be connected, and at the moment, the arm 4, the lead wires 1-3 and the screw limiting device 3 form a closed loop.
Two screw rod stop devices 3 are adjusted first, then two extension bars 2 and a measuring arm 4 are closed, and the measuring arm 4 is stretched into an inner hole of a part. Increasing the included angle between the two extension bars 2 until the measuring arm 4 contacts the wall surface of the inner hole and extrudes the torsion spring 5, so that the measuring arm 4 leaves the limiting position, the circuit is disconnected, and the light emitting diode 1-2 is turned off; then the included angle between the extension bars 2 is gradually reduced until the indicator light is on, and the measuring arm 4 is just at the limit position at the moment. And reading the scale of the graduated scale 7 where the pointer 6 is positioned, taking out the measuring tool, restoring the pointer 6 to the position just read, and measuring the distance between the vertexes of the two measuring arms 4 by using the standard measuring tool, namely the hole diameter of the inner hole.
When the current side aperture is less, can be through adjusting screw stop device 3, make volume arm 4 in reasonable within range, after the aperture through the front side, open extension bar 2, make cantilever 4 contact the hole aperture, continue to open the angle between extension bar 2, can make volume arm 4 contact hole inner wall, under the extrusion, can make volume arm 4 leave limit position, the circuit disconnection, emitting diode 1-2 extinguishes, it is bright to the pilot lamp to reduce contained angle between the extension bar 2 again gradually, this moment volume arm 4 just is in limit position, and emitting diode 1-2 lights, just be in limit position, follow-up measurement work operation is with above.
Example two
As shown in fig. 3-5, the extension bar 2 is a telescopic extension bar, and comprises a front bar 2-1 hinged with a fixed shaft 8, a rear bar 2-2 sleeved with the front bar 2-1 is arranged at the lower part of the front bar 2-1, and the rear bar 2-2 is telescopically and slidably connected with the front bar 2-1.
The front rod 2-1 is provided with two or more positioning holes 2-3, the inner side of the upper end of the rear rod 2-2 is provided with a compression spring plate 2-5, one side of the compression spring plate 2-5 is provided with a positioning ball 2-4, the positioning ball 2-4 extends out of the rear rod 2-2, and the positioning ball 2-4 is matched with the positioning holes 2-3.
The working process is as follows: the rear rod 2-2 can stretch out and draw back from the front rod 2-1, and the length of the extension rod 2 is selected according to different stepped holes, so that the extension rod can adapt to more auxiliary measurements of different stepped holes. The rest is the same as the first embodiment.
The utility model discloses mainly apply to and carry out the place of auxiliary measurement shoulder hole
Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.
Claims (6)
1. A stepped-hole auxiliary measuring tool, comprising:
a fixed shaft (8);
the extension bars (2) are symmetrically arranged on two sides of the fixed shaft (8), and the extension bars (2) are hinged with the fixed shaft (8);
a measuring arm (4) is arranged on one measuring side of the extension bar (2), the measuring arm (4) is hinged with the extension bar (2) through a torsion spring (5), and a screw limiting device (3) is arranged between the extension bar (2) and the measuring arm (4);
the built-in indicating circuit (1) is used for prompting inner hole measurement;
the indicating device records the position of the extension bar (2) when the inner hole is measured;
the indicating device comprises a pointer (6) fixed on the extension bar (2) on one side, a graduated scale (7) is arranged on the extension bar (2) on the other side, and the graduated scale (7) penetrates through the pointer (6) and is matched with the pointer (6); the built-in indicating circuit (1) comprises a power supply (1-1) fixed on the inner side of a fixed shaft (8), the power supply (1-1) is respectively connected to screw limiting devices (3) on two sides through leads (1-3), the measuring arms (4) are electrically connected through the leads (1-3), the measuring arms (4) and the extension rod (2) are insulated, and the leads (1-3) are connected with light emitting diodes (1-2) and resistors;
the front side of the measuring arm (4) which is contacted with the inner hole during measurement is made of insulating materials.
2. The stepped-hole auxiliary measuring tool of claim 1, wherein: the inner side of the extension bar (2) is hollow, and the lead (1-3) passes through the hollow part of the extension bar (2) and then is connected to the measuring arm (4).
3. The stepped-hole auxiliary measuring tool of claim 2, wherein: the light emitting diodes (1-2) are arranged on one side of the fixed shaft (8).
4. The stepped-hole auxiliary measuring tool of claim 3, wherein: the screw limiting device (3) comprises a limiting seat fixed on the extension bar and a limiting screw connected with the limiting seat through threads.
5. The stepped-hole auxiliary measuring tool according to any one of claims 1 to 4, wherein: extension bar (2) be retractable extension bar, including with fixed axle (8) articulated preceding pole (2-1), the lower part of preceding pole (2-1) is equipped with rather than the back pole (2-2) that cup joints, back pole (2-2) with preceding pole (2-1) scalable sliding connection.
6. The stepped-hole auxiliary measuring tool of claim 5, wherein: the front rod (2-1) is provided with two or more positioning holes (2-3), the inner side of the upper end of the rear rod (2-2) is provided with a compression spring piece (2-5), one side of the compression spring piece (2-5) is provided with a positioning ball (2-4), the positioning ball (2-4) extends out of the rear rod (2-2), and the positioning ball (2-4) is matched with the positioning holes (2-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922492970.9U CN211147536U (en) | 2019-12-31 | 2019-12-31 | Auxiliary measuring tool for stepped hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922492970.9U CN211147536U (en) | 2019-12-31 | 2019-12-31 | Auxiliary measuring tool for stepped hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211147536U true CN211147536U (en) | 2020-07-31 |
Family
ID=71752658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922492970.9U Active CN211147536U (en) | 2019-12-31 | 2019-12-31 | Auxiliary measuring tool for stepped hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211147536U (en) |
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2019
- 2019-12-31 CN CN201922492970.9U patent/CN211147536U/en active Active
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