CN104677234A - Length measuring device for cylindrical hole - Google Patents
Length measuring device for cylindrical hole Download PDFInfo
- Publication number
- CN104677234A CN104677234A CN201510114544.5A CN201510114544A CN104677234A CN 104677234 A CN104677234 A CN 104677234A CN 201510114544 A CN201510114544 A CN 201510114544A CN 104677234 A CN104677234 A CN 104677234A
- Authority
- CN
- China
- Prior art keywords
- cylindrical hole
- stopper rod
- locating piece
- coordinating block
- measuring appliance
- Prior art date
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Abstract
The invention discloses a length measuring device for a cylindrical hole. The device comprises a positioning stopper rod and a measuring stopper rod, wherein a positioning block is arranged at one end of the positioning stopper rod, the end part of the positioning block is cone-shaped, a shoulder of the cone of the positioning block extends into the cylindrical hole from one end of the cylindrical hole and is attached to the inner circular conical surface of the to-be-measured cylindrical hole, a match block arranged at one end of the measuring stopper block is a cylindrical clinohedral body and extends into the cylindrical hole from the other end of the cylindrical hole, the positioning block is attached to the clinohedral body of the match block, a dial indicator is mounted on the measuring stopper rod, and the measuring rod of the dial indicator leans against the orifice of the cylindrical hole. The device disclosed by the invention is quite convenient and high in measuring precision and efficiency.
Description
Technical field
The present invention relates to cylindrical hole length measurement technique field, be specifically related to the cylindrical hole length-measuring appliance of a kind of two ends inner cone.
Background technology
In practical engineering application, in order to ensure the machining precision of cylindrical hole, measurement being carried out to the cylindrical hole after processing and to be absolutely necessary step.Fig. 5 is a gear with the cylindrical hole of two ends inner cone, and the endoporus of this gear is processed into step-like according to functional requirement, and wherein have one section for internal spline structure, the AB section namely in figure, its length is L
1, the length L of this splined hole
1size need strict control, therefore need Measurement accuracy.As can be seen from Figure, due to the angle α of step transition inclined-plane and surface level
1be 35 degree, on-right angle transition, existing length hole measuring instrument is in the position cannot locating spline length initial point A at all, and no matter be thus direct or indirect measurement, existing length measuring instrument all cannot complete the cylindrical hole linear measure longimetry of this type of two ends inner cone.For this reason, a special survey instrument measurement is needed to be similar to the cylindrical hole length of this structure.
Summary of the invention
The technical problem to be solved in the present invention is to provide the cylindrical hole measurement of length device of a kind of energy Measurement accuracy two ends inner cone.
A kind of cylindrical hole length-measuring appliance provided by the invention, comprise location stopper rod and measure stopper rod, one end of described location stopper rod is provided with a positioning block, the end of this locating piece is cone shape, the cone convex shoulder of this locating piece stretches into from one end of cylindrical hole and is fitted in the internal conical surface of tested cylindrical hole, one end of described measurement stopper rod is provided with coordinating block, it is a cylinder clinohedral, it stretches into from the other end of described cylindrical hole, and described locating piece is bonded to each other in the clinohedral of coordinating block, this measurement stopper rod is equipped with indicating gauge, the sounding rod of this indicating gauge is against the aperture of cylindrical hole.
The interior angle of the cone of described locating piece is equal with the interior angle on the inclined-plane of coordinating block.
The interior angle of the cone of described locating piece is a bit larger tham the step angle of the endoporus of tested part.
For the ease of conjunction measuring and raising measuring accuracy, the chamfered tip of described coordinating block is excised by horizontal section.
Described coordinating block is cylinder of cutting sth. askew.
This measurement stopper rod also comprises a base, and this indicating gauge is arranged on this base, and is fixed by set screw.
In order to carry out high-acruracy survey, described indicating gauge is clock gauge.
The round platform bus of described locating piece and bottom surface angle are 40 °.
The scarf of described coordinating block and bottom surface angle are 40 °.
Compared with prior art, there is following good effect: cylindrical hole length-measuring appliance of the present invention, because the circular cone convex shoulder of locating piece of locating stopper rod can be fitted the flex point place on step inclined-plane, the initial point A point of aperture rank length can be propped up, accurately location aperture rank linear measure longimetry initial point can be realized, measure the circular cone convex shoulder that the coordinating block of stopper rod and step locate stopper rod locating piece in addition to closely cooperate, initial point A is passed to measurement stopper rod to measure, the aperture of cylindrical hole is directly against by the sounding rod being contained in the clock gauge measured on stopper rod, the i.e. terminal B point of the length of sounding rod contact cylindrical hole, by the numerical value of clock gauge, just the length value of aperture rank length AB section can accurately directly be obtained, measure very convenient, clock gauge can directly adopt clock gauge to measure, measuring accuracy, efficiency is high.
Below in conjunction with drawings and Examples, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the structural representation of cylindrical hole length-measuring appliance of the present invention;
Fig. 2 is the structural representation of location stopper rod;
Fig. 3 is the structural representation measuring stopper rod;
Fig. 4 is that the present invention is for measuring the structural representation of part;
Fig. 5 is the structural representation of tested part.
Embodiment
As shown in Figure 1, this cylindrical hole length-measuring appliance of the present invention comprises location stopper rod 1 and measures stopper rod 2, locates stopper rod 1 and measures stopper rod 2 and stretch into from the cylindrical hole two ends of tested part respectively.
Particularly, as shown in Figure 2, the body of rod 13 of location stopper rod 1 is set as cylindric, and the diameter of the body of rod 13 is slightly less than diameter of bore, so that the body of rod 13 can enter the large aperture end of measured bore.The rear end of the body of rod 13 is provided with step body, and the body of rod 13 front end is provided with locating piece 11.Locating piece 11 is in cone shape, and thus the circular cone convex shoulder 12 of locating piece 11 takes the form of inclined plane.Angle α between the round platform bus of the circular cone convex shoulder 12 of locating piece 11 and the baseplane of this locating piece 11
2according to step angle (the angle α of step transition inclined-plane and surface level of the endoporus of tested part
1) and determine.Particularly, angle α
2be a bit larger tham angle α
1.
As shown in Figure 3, measure stopper rod 2 and comprise coordinating block 21, base 28 and clock gauge 22.Coordinating block 21 is a chamfer cylinder, the angle α of the baseplane of this coordinating block inclined-plane 23 and coordinating block 21
3with angle α
2equal, be 40 °.The non-chamfered end face of this coordinating block 21 connects base 28.Clock gauge 22 is located on base 28.Specifically, the measuring staff body 25 of clock gauge 22 runs through base 28 towards coordinating block 21 ground, the axis parallel of measuring staff body 25 and coordinating block 2.Measuring staff body 25 is fixed by the set screw on base 28.The measuring staff body 25 of clock gauge 22 can move in the endoporus of base 28, to be adjusted to Len req, is adjusted to after requiring position firm by set screw 26.
Due to angle α
3with angle α
2identical, inclined-plane and the coordinating block inclined-plane 23 of the circular cone convex shoulder 12 of locating piece 21 can closely cooperate.
In the present embodiment, the chamfered tip 24 of coordinating block 21 is excised by horizontal section.Coordinating block 21 without when top, avoid top distortion or the impact of wearing and tearing on measurement data of coordinating block 21, be convenient to conjunction measuring and improve measuring accuracy.
In the present embodiment, the step angle α of tested gear
1be 35 °, the thus angle α of the present embodiment
2it is 40 °.Therefore, the inclined-plane of the circular cone convex shoulder 12 of locating piece 11 will become inclined-plane, endoporus step location, when being contacted with the endoporus step surface of tested part by the circular cone convex shoulder 12 of locating piece 11, due to angle α
2than angle α
1greatly, the inclined-plane of the circular cone convex shoulder 12 of locating piece 11 will prop up the flex point place on step inclined-plane, i.e. end points in the hole on aperture rank.
As shown in Figure 4, during the cylindrical hole length L1 of the present invention's tested gear 3 two ends inner cone in for survey sheet 5, this gear step angle α
1(angle of step inclined-plane and surface level) is 35 °, is first inserted by the large aperture end of location stopper rod 1 from cylindrical hole, inclined-plane (the angle α of the circular cone convex shoulder 12 of the locating piece 11 of location stopper rod 1
2be 40 °) by the inclined-plane flex point A point cantact with cylindrical hole, A point is the starting point of surveyed aperture rank length, and then realize playing point location to cylindrical hole aperture stage length.Then, then will measure the other end of stopper rod 2 from endoporus step, namely the small-bore end of cylindrical hole stretches into, and measures coordinating block inclined-plane 23 (the angle α of stopper rod 2
3be 40 °) inclined-plane of the circular cone convex shoulder 12 with locating piece 11 is closely cooperated mutually, aperture rank linear measure longimetry initial point A is just passed to measurement stopper rod 2 by with minimum error by this, the clock gauge 22 measured on stopper rod 2 is directly against the aperture of the cylindrical hole of tested gear 3, namely directly contact the terminal B point of the length of cylindrical hole, thus achieve one and measure closed loop.
During actual measurement, initial point A point is constant known to the distance L4 of coordinating block 21 horizontal point of contact C, and horizontal point of contact C is also constant known to coordinating block 21 and the long L2 of the transverse plane 27 of base 28.When regulating measurement, clock gauge 22 reading is first made to make zero, the distance L3 of the gauge outfit of clock gauge 22 and the transverse plane 27 of sounding rod 2 is controlled again by set screw 26, make the value of L4+L2-L3 progressively near the basic size value of L1, when L4+L2-L3 is close to when in part, hole length is adjusted to basic size, locking set screw 26, and the value of L3 measured in record.Therefore, when actual duplicate measurements tested part 3 this constitutional detail, it is initial good by instrument regulation only to need, afterwards just can the length of duplicate measurements cylindrical hole, measures efficiency high.Whether, by observing clock gauge numerical value, just directly can read the length of cylindrical hole, also can be in margin tolerance by intuitive judgment accessory size, very convenient to use, adopt the data that clock gauge is measured, measuring accuracy is high, and length value is also very accurate.
Certainly, this cylindrical hole length-measuring appliance of the present invention, the locating piece of step location stopper rod is not limited to taper shape, the coordinating block measuring stopper rod is also not limited to the right cylinder of cutting sth. askew, the structure of other shape can also be adopted, such as locating piece adopts chamfer cylinder, and the employing chamfer cylinder of coordinating block, as long as locating piece and coordinating block are the shape coordinated.The angle of endoporus step location stopper rod bus and surface level is also not limited to 40 degree, as long as less than the step angle on tested part inclined-plane with the inclined-plane of coordinating block and the angle of surface level measuring stopper rod.Be contained in the indicating gauge measured on stopper rod and be also not limited to clock gauge, also can be dial gauge, as long as other length tolerance measuring instrument meeting demand all can be used for the present invention.
The present invention is not limited to above-mentioned embodiment, if do not depart from the spirit and scope of the present invention to various change of the present invention or modification, if these are changed and modification belongs within claim of the present invention and equivalent technologies scope, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. a cylindrical hole length-measuring appliance, it is characterized in that: comprise location stopper rod and measure stopper rod, one end of described location stopper rod is provided with a positioning block, the end of this locating piece is cone shape, the cone convex shoulder of this locating piece stretches into from one end of cylindrical hole and is fitted in the internal conical surface of tested cylindrical hole, one end of described measurement stopper rod is provided with coordinating block, it is a cylinder clinohedral, it stretches into from the other end of described cylindrical hole, and described locating piece is bonded to each other in the clinohedral of coordinating block, this measurement stopper rod is equipped with indicating gauge, the sounding rod of this indicating gauge is against the aperture of cylindrical hole.
2. cylindrical hole length-measuring appliance as claimed in claim 1, is characterized in that: the interior angle of the cone of described locating piece is equal with the interior angle on the inclined-plane of coordinating block.
3. cylindrical hole length-measuring appliance as claimed in claim 1, is characterized in that: the interior angle of the cone of described locating piece is a bit larger tham the step angle of the endoporus of tested part.
4. cylindrical hole length-measuring appliance as claimed in claim 1, is characterized in that: the chamfered tip of described coordinating block is excised by horizontal section.
5. cylindrical hole length-measuring appliance as claimed in claim 1, is characterized in that: described coordinating block is cylinder of cutting sth. askew.
6. cylindrical hole length-measuring appliance as claimed in claim 1, is characterized in that: described indicating gauge is clock gauge.
7. cylindrical hole length-measuring appliance as claimed in claim 1, is characterized in that: the round platform bus of described locating piece and bottom surface angle are 40 °.
8. cylindrical hole length-measuring appliance as claimed in claim 1, is characterized in that: the scarf of described coordinating block and bottom surface angle are 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 true CN104677234A (en) | 2015-06-03 |
| CN104677234B CN104677234B (en) | 2017-07-07 |
Family
ID=53312607
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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104677234B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123739A (en) * | 2016-08-25 | 2016-11-16 | 韶关学院 | Embed the combination type length-measuring appliance of roller gear inner end inner cone endoporus in opposite directions |
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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123739A (en) * | 2016-08-25 | 2016-11-16 | 韶关学院 | Embed the combination type length-measuring appliance of roller gear inner end inner cone endoporus in opposite directions |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104677234B (en) | 2017-07-07 |
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