CN201387309Y - Aperture measuring device of shallow hole - Google Patents
Aperture measuring device of shallow hole Download PDFInfo
- Publication number
- CN201387309Y CN201387309Y CN200920039543U CN200920039543U CN201387309Y CN 201387309 Y CN201387309 Y CN 201387309Y CN 200920039543 U CN200920039543 U CN 200920039543U CN 200920039543 U CN200920039543 U CN 200920039543U CN 201387309 Y CN201387309 Y CN 201387309Y
- Authority
- CN
- China
- Prior art keywords
- bore hole
- shallow bore
- gauge stand
- shallow hole
- test indicator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005259 measurement Methods 0.000 claims description 16
- 238000010586 diagram Methods 0.000 description 3
- 230000000875 corresponding Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Abstract
The utility model provides an aperture measuring device of a shallow hole. The aperture measuring device is composed of a gauge stand and a lever dial gauge which is fixedly arranged on the gauge stand. A cylindrical lug boss which is used for being embedded in the shallow hole and is matched with the shallow hole is arranged at the bottom part of the gauge stand, and a spherical contact head of the lever dial gauge is stretched at the outer side of the cylindrical lug boss in the circumferential direction in a protruding manner. The spherical contact head of the lever dial gauge is used as an elastic contact point which is in contact with the wall of the shallow hole, and a fixed contact point which is in contact with the wall of the shallow hole is arranged at the reverse side of the spherical contact head on the circumference of the cylindrical lug boss. The scheme solves the problem that the present measuring device cannot measure the aperture of the high-precision shallow hole.
Description
Technical field
The utility model relates to a kind of mechanical measuring device, relates in particular to a kind of shallow bore hole inside diameter measurement device, and this measurement mechanism is specially adapted to measure hole depth less than 5 millimeters high-accuracy shallow bore hole.
Background technology
Usually, when the dimensional tolerence in hole was in 0.01 millimeter, we claimed that such hole is high-accuracy hole, came measurement of comparison for our the higher internal diameter scale matching standard light face ring gauge of measuring accuracy commonly used of measurement of high-accuracy like this bore dia size.And when to the aperture degree of depth during less than 15 millimeters high-accuracy hole measurement, because hole depth is more shallow, be not enough to support the contact and the fulcrum of internal diameter scale, then can't use the internal diameter scale to measure, at this moment just can only adopt common vernier caliper or milscale directly to measure, with range estimation reading value, but its measuring accuracy is lower, can not satisfy the accuracy requirement in high-accuracy hole.
Summary of the invention
The utility model provides a kind of shallow bore hole inside diameter measurement device, and its purpose mainly is to solve the problem that existing measurement mechanism can't be measured high-accuracy shallow bore hole aperture.
For achieving the above object, the technical solution adopted in the utility model is: a kind of shallow bore hole inside diameter measurement device, constitute by gauge stand and the dial test indicator that is fixedly arranged on this gauge stand, the bottom of described gauge stand is provided with for being embedded in the shallow bore hole and shallow bore hole matched cylindrical boss, and the week that the spherical contact of dial test indicator is stretched on cylindrical boss laterally; The spherical contact of dial test indicator is as the Elastic Contact point that contacts with the shallow bore hole hole wall, and is provided with the fixed contact point that contacts with the shallow bore hole hole wall with the opposing side of spherical contact on the cylindrical boss circumference.
Related content in above-mentioned two technical schemes is explained as follows:
1, in the such scheme, offer draw-in groove on the described gauge stand, dial test indicator is arranged in this draw-in groove, and with bolted on gauge stand.
2, in the such scheme, described dial test indicator is a standard measuring equipment, is to utilize lever principle and indicating gauge the distance of cutting apart between two measurement faces on the arc chi frame to be carried out the general precision measurement instrument of reading.
Principle of work of the present utility model is: before measuring the shallow bore hole aperture, remove the reading of correction lever clock gauge earlier with standard light face ring gauge, its concrete grammar is: with the fixed contact point on the cylindrical boss of gauge stand near standard light face ring gauge inwall side, to circle along standard light face ring gauge inwall sidespin as the spherical contact of the dial test indicator of resilient contact, after obtaining stablizing reading, write down the indicator position.Then the cylindrical boss of this device being put into shallow bore hole to be measured measures, with the fixed contact point established on the spherical contact of dial test indicator and the cylindrical boss circumference respectively with the inwall contact both sides of shallow bore hole to be measured, use lever principle, corresponding displacement takes place in the indicator of dial test indicator, draw pin-point reading, compare with the internal diameter size of standard light face ring gauge, can draw the precise information in shallow bore hole to be measured aperture.
The utility model beneficial effect compared with prior art is:
Because application of the present utility model, cylindrical boss cooperates with tested high-accuracy shallow bore hole, between the periphery of cylindrical boss and the tested shallow bore hole hole wall several gap is only arranged, utilize the spherical contact of dial test indicator to cooperate fixed contact point on the cylindrical boss to measure the aperture of shallow bore hole, can when finishing, guarantee the high precision of measurement the measurement of high precision shallow bore hole.
Description of drawings
Accompanying drawing 1 is the utility model example structure synoptic diagram;
Accompanying drawing 2 is the utility model embodiment gauge stand structural representation;
Accompanying drawing 3 is tested high-accuracy shallow bore hole synoptic diagram;
Accompanying drawing 4 is measured shallow bore hole aperture synoptic diagram for adopting the utility model.
In the above accompanying drawing: 1, dial test indicator; 2, gauge stand; 3, cylindrical boss; 4, spherical contact; 5, shallow bore hole; 6, draw-in groove; 7, bolt.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment:
Shown in Fig. 1～2, a kind of shallow bore hole inside diameter measurement device is made of gauge stand 2 and the dial test indicator 1 that is fixedly arranged on this gauge stand 2, offers draw-in groove 6 on the gauge stand 2, and dial test indicator 1 is arranged in this draw-in groove 6, and is fastened on the gauge stand 2 with bolt 7.
The bottom of gauge stand 2 is provided with for being embedded in the shallow bore hole 5 and shallow bore hole 5 matched cylindrical boss 3, and the week that the spherical contact 4 of dial test indicator 1 is stretched on cylindrical boss 3 laterally; The spherical contact 4 of dial test indicator 1 is as the Elastic Contact point that contacts with shallow bore hole 5 hole walls, and is provided with the fixed contact point that contacts with shallow bore hole 5 hole walls with the opposing side of spherical contact 4 on cylindrical boss 3 circumference.
As shown in Figure 3, be for preventing gear axially movable one high-accuracy shallow bore hole 5 on the hydro-extractor thrust pump, its designing requirement tolerance need be controlled at 0.005mm, the degree of depth of this seam is very shallow, be not enough to support the contact and the fulcrum of internal diameter scale, can't measure its internal diameter with the internal diameter scale, just can measure with the utility model this moment.As shown in Figure 4, before measuring shallow bore hole 5 apertures, remove the reading of correction lever clock gauge 1 earlier with standard light face ring gauge (not shown) measurer, its concrete grammar is: with on the cylindrical boss 3 of gauge stand 2 dorsad the fixed contact point of dial test indicator 1 near standard light face ring gauge (not shown) inwall side, to rotate a circle along standard light face ring gauge wall inboard as the spherical contact 4 of resilient contact dial test indicator 1, after obtaining stablizing reading, write down the indicator position.Then the cylindrical boss 3 of this device being put into shallow bore hole 5 to be measured measures, with the fixed contact point established on the spherical contact 4 of dial test indicator 1 and cylindrical boss 3 circumference respectively with the inwall contact both sides of shallow bore hole 5 to be measured, use lever principle, corresponding displacement takes place in the indicator of dial test indicator 1, draw pin-point reading, compare with the internal diameter size of standard light face ring gauge, can draw the precise information in shallow bore hole to be measured aperture.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (2)
1, a kind of shallow bore hole inside diameter measurement device, it is characterized in that: constitute by gauge stand (2) and the dial test indicator (1) that is fixedly arranged on this gauge stand (2), the bottom of described gauge stand (2) is provided with for being embedded in the shallow bore hole (5) and shallow bore hole (5) matched cylindrical boss (3), and the week that the spherical contact (4) of dial test indicator (1) is stretched on cylindrical boss (3) laterally; The spherical contact (4) of dial test indicator (1) is as the Elastic Contact point that contacts with shallow bore hole (5) hole wall, and is provided with the fixed contact point that contacts with shallow bore hole (5) hole wall with the opposing side of spherical contact (4) on cylindrical boss (3) circumference.
2, shallow bore hole inside diameter measurement device according to claim 1 is characterized in that: offer draw-in groove (6) on the described gauge stand (2), dial test indicator (1) is arranged in this draw-in groove (6), and is fastened on the gauge stand (2) with bolt (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920039543U CN201387309Y (en) | 2009-04-15 | 2009-04-15 | Aperture measuring device of shallow hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920039543U CN201387309Y (en) | 2009-04-15 | 2009-04-15 | Aperture measuring device of shallow hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201387309Y true CN201387309Y (en) | 2010-01-20 |
Family
ID=41579844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920039543U Expired - Lifetime CN201387309Y (en) | 2009-04-15 | 2009-04-15 | Aperture measuring device of shallow hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201387309Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478380A (en) * | 2010-11-22 | 2012-05-30 | 中国北车集团大连机车研究所有限公司 | Detecting equipment for bore of shallow spigot of piston of diesel locomotive |
| CN104034242A (en) * | 2014-06-06 | 2014-09-10 | 陕西法士特齿轮有限责任公司 | Detection tool for tooth profile angle at end face of disc part, and application method of detection tool |
| CN113237409A (en) * | 2021-06-29 | 2021-08-10 | 中国航发贵州黎阳航空动力有限公司 | Step hole depth measuring device |
-
2009
- 2009-04-15 CN CN200920039543U patent/CN201387309Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478380A (en) * | 2010-11-22 | 2012-05-30 | 中国北车集团大连机车研究所有限公司 | Detecting equipment for bore of shallow spigot of piston of diesel locomotive |
| CN104034242A (en) * | 2014-06-06 | 2014-09-10 | 陕西法士特齿轮有限责任公司 | Detection tool for tooth profile angle at end face of disc part, and application method of detection tool |
| CN104034242B (en) * | 2014-06-06 | 2017-05-31 | 陕西法士特齿轮有限责任公司 | The detection instrument and its application process of a kind of disk like part end face profile angle |
| CN113237409A (en) * | 2021-06-29 | 2021-08-10 | 中国航发贵州黎阳航空动力有限公司 | Step hole depth measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100120 |
|
| CX01 | Expiry of patent term |