CN104677234B - Cylindrical hole length-measuring appliance - Google Patents
Cylindrical hole length-measuring appliance Download PDFInfo
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- CN104677234B CN104677234B CN201510114544.5A CN201510114544A CN104677234B CN 104677234 B CN104677234 B CN 104677234B CN 201510114544 A CN201510114544 A CN 201510114544A CN 104677234 B CN104677234 B CN 104677234B
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- cylindrical hole
- measurement
- stopper rod
- locating piece
- measuring appliance
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Abstract
A kind of cylindrical hole length-measuring appliance disclosed by the invention, including positioning stopper rod and measurement stopper rod, one end of the positioning stopper rod is provided with a positioning block, the end of the locating piece is cone shape, the cone convex shoulder of the locating piece is stretched into and is fitted on the internal conical surface of tested cylindrical hole from one end of cylindrical hole, one end of the measurement stopper rod is provided with coordinating block, it is a cylinder clinohedral, it is stretched into from the other end of the cylindrical hole, and the locating piece is bonded to each other in the clinohedral of coordinating block, dial gauge is housed on the measurement stopper rod, the measurement bar of the dial gauge is against the aperture of cylindrical hole.The present invention measures very convenient, certainty of measurement, efficiency high.
Description
Technical field
The present invention relates to cylindrical hole length measurement technique field, and in particular to a kind of cylindrical hole linear measure longimetry of two ends inner cone
Device.
Background technology
In practical engineering application, in order to ensure the machining accuracy of cylindrical hole, the cylindrical hole after processing is measured is
Essential step.Fig. 5 is a gear for the cylindrical hole with two ends inner cone, and the endoporus of the gear adds according to functional requirement
Work stepped, wherein it is AB sections in internal spline structure, i.e. figure to have one section, its length is L1, the length L of the splined hole1Chi
It is very little to need strict control, it is therefore desirable to accurate measurement.It is seen that due to step transition inclined-plane and the angle α of horizontal plane1
Be 35 degree, on-right angle transition, existing length hole measuring instrument the position of spline length initial point A cannot be positioned at all, because
Regardless of whether being directly or indirectly measurement, existing length measuring instrument cannot all complete the cylindrical hole linear measure longimetry of such two ends inner cone.
For this reason, it may be necessary to cylinder hole length of a special survey tool measurement similar to the structure.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of cylindrical hole measurement of length that can accurately measure two ends inner cone
Device.
A kind of cylindrical hole length-measuring appliance that the present invention is provided, including positioning stopper rod and measurement stopper rod, the limit plug
One end of bar is provided with a positioning block, and the end of the locating piece is cone shape, and the cone convex shoulder of the locating piece is from cylindrical hole
One end is stretched into and is fitted on the internal conical surface of tested cylindrical hole, and one end of the measurement stopper rod is provided with coordinating block, and it is one
Cylinder clinohedral, it is stretched into from the other end of the cylindrical hole, and the locating piece is bonded to each other in the clinohedral of coordinating block, should
Dial gauge is housed on measurement stopper rod, the measurement bar of the dial gauge is against the aperture of cylindrical hole.
The within angle of the cone of the locating piece is equal with the within angle on the inclined-plane of coordinating block.
Step angle of the within angle of the cone of the locating piece slightly larger than the endoporus of tested part.
For the ease of conjunction measuring and raising certainty of measurement, the chamfered tip of the coordinating block is cut off by horizontal cross-section.
The coordinating block is beveling cylinder.
The measurement stopper rod also includes a base, and the dial gauge is arranged on the base, and is fixed by adjusting screw.
In order to carry out high-acruracy survey, the dial gauge is amesdial.
The round platform bus of the locating piece and bottom surface angle are 40 °.
The scarf of the coordinating block and bottom surface angle are 40 °.
Compared with prior art, with following good effect：Cylindrical hole length-measuring appliance of the present invention, due to positioning stopper rod
Locating piece circular cone convex shoulder can fit step inclined-plane flex point at, the initial point A points of aperture rank length can be propped up, standard can be realized
It is determined that position aperture rank linear measure longimetry initial point, measures the coordinating block of stopper rod and the circular cone convex shoulder of step positioning stopper rod locating piece in addition
It is fitted close, initial point A is passed into measurement stopper rod measures, and the measurement bar by the amesdial on measurement stopper rod is direct
The aperture of cylindrical hole, i.e. the terminal B points of the length of measurement bar contact cylindrical hole are against, by the numerical value of amesdial, just can be accurate
The length value of AB sections of aperture rank length is directly obtained, measurement gets up very convenient, amesdial can be measured directly using amesdial, be surveyed
Accuracy of measurement, efficiency high.
The invention will be further described with reference to the accompanying drawings and examples.
Brief description of the drawings
Fig. 1 is the structural representation of cylindrical hole length-measuring appliance of the invention；
Fig. 2 is the structural representation for positioning stopper rod；
Fig. 3 is the structural representation for measuring stopper rod；
Fig. 4 is the present invention for measuring the structural representation of part；
Fig. 5 is the structural representation of tested part.
Specific embodiment
As shown in figure 1, this cylindrical hole length-measuring appliance of the invention includes positioning stopper rod 1 and measurement stopper rod 2, limit plug
Bar 1 and measurement stopper rod 2 are stretched into from the cylindrical hole two ends of tested part respectively.
Specifically, as shown in Fig. 2 the body of rod 13 of positioning stopper rod 1 is set as cylindric, the diameter of the body of rod 13 is than diameter of bore slightly
It is small, the large aperture end of measured bore can be entered so as to the body of rod 13.The rear end of the body of rod 13 is provided with step body, and the front end of the body of rod 13 is provided with fixed
Position block 11.Locating piece 11 takes the form of inclined plane in cone shape, thus the circular cone convex shoulder 12 of locating piece 11.The circular cone convex shoulder of locating piece 11
Angle α between 12 round platform bus and the baseplane of the locating piece 112Step angle (the step mistake of the endoporus according to tested part
Cross the angle α on inclined-plane and horizontal plane1) depending on.Specifically, angle α2Slightly larger than angle α1。
As shown in figure 3, measurement stopper rod 2 includes coordinating block 21, base 28 and amesdial 22.Coordinating block 21 is a beveling cylinder
The angle α of the baseplane of body, the coordinating block inclined-plane 23 and coordinating block 213With angle α2It is equal, it is 40 °.The coordinating block 21 it is non-tiltedly
Cut end face connect base 28.Amesdial 22 is on base 28.Specifically, the measuring staff body 25 of amesdial 22 is towards the ground of coordinating block 21
Through base 28, the axis parallel of measuring staff body 25 and coordinating block 21.Measuring staff body 25 is fixed by the adjusting screw on base 28.Thousand
Dividing the measuring staff body 25 of table 22 can move in the endoporus of base 28, and to adjust the length needed for, regulation passes through to after requiring position
Adjusting screw 26 is firm.
Due to angle α3With angle α2Identical, inclined-plane and the coordinating block inclined-plane 23 of the circular cone convex shoulder 12 of locating piece 21 can be closely
Coordinate.
In the present embodiment, the chamfered tip 24 of coordinating block 21 is cut off by horizontal cross-section.Coordinating block 21 without top situation
Under, it is to avoid influence of the top deformation or abrasion of coordinating block 21 to measurement data, it is easy to conjunction measuring and improves certainty of measurement.
In the present embodiment, the step angle α of gear is tested1Be 35 °, thus the present embodiment angle α2It is 40 °.Therefore, position
The inclined-plane of the circular cone convex shoulder 12 of block 11 will position inclined-plane as endoporus step, when by the circular cone convex shoulder 12 of locating piece 11 and tested zero
When the endoporus step surface of part is contacted, due to angle α2Compare angle α1Greatly, the inclined-plane of the circular cone convex shoulder 12 of locating piece 11 will prop up step
At the flex point on inclined-plane, i.e. end points in the hole of aperture rank.
As shown in figure 4, the present invention is when the cylinder hole length L1 of the two ends inner cone of gear 3 is tested in for measuring Fig. 5, the tooth
Wheel step angle α1(angle of step inclined-plane and horizontal plane) is 35 °, and positioning stopper rod 1 is inserted from the large aperture end of cylindrical hole first
Enter, position the inclined-plane (angle α of the circular cone convex shoulder 12 of the locating piece 11 of stopper rod 12It is 40 °) by the inclined-plane flex point A points with cylindrical hole
Contact, A points are the starting point of surveyed aperture rank length, and then realize playing point location to cylindrical hole aperture stage length.Then, then
The other end of the stopper rod 2 from endoporus step will be measured, i.e. the small-bore end of cylindrical hole is stretched into, measure the coordinating block inclined-plane 23 of stopper rod 2
(angle α3It is 40 °) inclined-plane of the circular cone convex shoulder 12 with locating piece 11 is mutually fitted close, this will just be incited somebody to action with minimum error
Aperture rank linear measure longimetry initial point A passes to measurement stopper rod 2, and the amesdial 22 on measurement stopper rod 2 is directly against the circle of tested gear 3
The terminal B points in the aperture of post holes, the i.e. length of directly contact cylindrical hole, thus achieve a measurement closed loop.
During actual measurement, initial point A points to the horizontal point of contact C of coordinating block 21 are constant apart from L4, it is known that horizontal point of contact C is to matching somebody with somebody
It is also constant known that block 21 is closed with the L2 long of the transverse plane 27 of base 28.During regulation measurement, the reading of amesdial 22 is first set to be zeroed, then
Controlled by adjusting screw 26 gauge outfit and the measurement bar 2 of amesdial 22 transverse plane 27 apart from L3, make the value of L4+L2-L3 by
The basic size value near L1 is walked, when L4+L2-L3 is adjusted to basic size close to the interior hole length of part, adjusting screw is locked
26, and record the value of measurement L3.Therefore, in actual 3 this constitutional detail of duplicate measurements tested part, it is only necessary to initially by instrument
Regulate, the length of measurement cylindrical hole is just repeated afterwards, measurement efficiency is high.By observing amesdial numerical value, just can directly read
Go out the length of cylindrical hole, also can intuitive judgment accessory size whether in the margin of tolerance, it is very convenient to use, using thousand
Divide the data of table measurement, certainty of measurement is high, and length value is also very accurate.
Certainly, this cylindrical hole length-measuring appliance of the invention, the locating piece of step positioning stopper rod is not limited to cone,
The coordinating block for measuring stopper rod is also not limited to the cylinder of beveling, can also use other shapes of structure, and such as locating piece is adopted
With chamfer cylinder, coordinating block uses chamfer cylinder, as long as both locating piece and coordinating block are the shape for coordinating.It is interior
Hole platform rank positions stopper rod bus and is not also limited with the angle of horizontal plane with the inclined-plane of coordinating block of measurement stopper rod with the angle of horizontal plane
In 40 degree, as long as smaller than the step angle on tested part inclined-plane.Dial gauge on measurement stopper rod is also not necessarily limited to amesdial,
Can be also dial gauge, as long as other length tolerance measuring instruments for meeting demand are used equally to the present invention.
The invention is not limited in above-mentioned implementation method, if not departing from the present invention to various changes of the invention or modification
Spirit and scope, if these are changed and within the scope of modification belongs to claim of the invention and equivalent technologies, then this hair
It is bright to be also intended to comprising these changes and modification.
Claims (8)
1. a kind of cylindrical hole length-measuring appliance, it is characterised in that：Including positioning stopper rod and measurement stopper rod, the positioning stopper rod
One end is provided with a positioning block, and the end of the locating piece is cone shape, and the cone convex shoulder of the locating piece is from one end of cylindrical hole
Stretch into and be fitted on the internal conical surface of tested cylindrical hole, one end of the measurement stopper rod is provided with coordinating block, and it is a cylinder
Clinohedral, it is stretched into from the other end of the cylindrical hole, and the locating piece is bonded to each other in the clinohedral of coordinating block, the measurement
Dial gauge is housed, the measurement bar of the dial gauge is against the aperture of cylindrical hole on stopper rod.
2. cylindrical hole length-measuring appliance as claimed in claim 1, it is characterised in that：The within angle of the cone of the locating piece
Within angle with the inclined-plane of coordinating block is equal.
3. cylindrical hole length-measuring appliance as claimed in claim 1, it is characterised in that：The within angle of the cone of the locating piece
Slightly larger than the step angle of the endoporus of tested part.
4. cylindrical hole length-measuring appliance as claimed in claim 1, it is characterised in that：The chamfered tip of the coordinating block is by level
Section cuts off.
5. cylindrical hole length-measuring appliance as claimed in claim 1, it is characterised in that：The coordinating block is beveling cylinder.
6. cylindrical hole length-measuring appliance as claimed in claim 1, it is characterised in that：The dial gauge is amesdial.
7. cylindrical hole length-measuring appliance as claimed in claim 1, it is characterised in that：The round platform bus of the locating piece and bottom surface
Angle is 40 °.
8. cylindrical hole length-measuring appliance as claimed in claim 1, it is characterised in that：The scarf of the coordinating block is pressed from both sides with bottom surface
Angle is 40 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510114544.5A CN104677234B (en) | 2015-03-16 | 2015-03-16 | Cylindrical hole length-measuring appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510114544.5A CN104677234B (en) | 2015-03-16 | 2015-03-16 | Cylindrical hole length-measuring appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104677234A CN104677234A (en) | 2015-06-03 |
| CN104677234B true CN104677234B (en) | 2017-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510114544.5A Active CN104677234B (en) | 2015-03-16 | 2015-03-16 | Cylindrical hole length-measuring appliance |
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| Country | Link |
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| CN (1) | CN104677234B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123739B (en) * | 2016-08-25 | 2019-11-05 | 韶关学院 | The combined type length-measuring appliance of opposite insertion roller gear inner end inner cone inner hole |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5476255A (en) * | 1977-11-16 | 1979-06-18 | Skf Ab | Tool for measuring tapered hole |
| SU1401251A2 (en) * | 1986-06-04 | 1988-06-07 | Ленинаканский Филиал Ереванского Политехнического Института Им.К.Маркса | Device for measuring inner cones |
| CN87102514A (en) * | 1987-04-10 | 1988-10-19 | 北京重型机器厂 | Measuring method for casting mould with deep blind holes |
| CN2217386Y (en) * | 1995-03-13 | 1996-01-17 | 徐清贵 | Gun-like screw-hole depth-probing device |
| CN2864577Y (en) * | 2005-12-26 | 2007-01-31 | 上海汽车股份有限公司 | Comparing block for depth of bore chamfering |
| CN102878899A (en) * | 2012-09-24 | 2013-01-16 | 周佼 | Device for measuring length of stepped hole inside deep hole |
| CN204555880U (en) * | 2015-03-16 | 2015-08-12 | 韶关学院 | Cylindrical hole length-measuring appliance |
-
2015
- 2015-03-16 CN CN201510114544.5A patent/CN104677234B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5476255A (en) * | 1977-11-16 | 1979-06-18 | Skf Ab | Tool for measuring tapered hole |
| SU1401251A2 (en) * | 1986-06-04 | 1988-06-07 | Ленинаканский Филиал Ереванского Политехнического Института Им.К.Маркса | Device for measuring inner cones |
| CN87102514A (en) * | 1987-04-10 | 1988-10-19 | 北京重型机器厂 | Measuring method for casting mould with deep blind holes |
| CN2217386Y (en) * | 1995-03-13 | 1996-01-17 | 徐清贵 | Gun-like screw-hole depth-probing device |
| CN2864577Y (en) * | 2005-12-26 | 2007-01-31 | 上海汽车股份有限公司 | Comparing block for depth of bore chamfering |
| CN102878899A (en) * | 2012-09-24 | 2013-01-16 | 周佼 | Device for measuring length of stepped hole inside deep hole |
| CN204555880U (en) * | 2015-03-16 | 2015-08-12 | 韶关学院 | Cylindrical hole length-measuring appliance |
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| Publication number | Publication date |
|---|---|
| CN104677234A (en) | 2015-06-03 |
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