CN206269715U - A kind of centre bore device for accurately measuring - Google Patents
A kind of centre bore device for accurately measuring Download PDFInfo
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- CN206269715U CN206269715U CN201621325070.5U CN201621325070U CN206269715U CN 206269715 U CN206269715 U CN 206269715U CN 201621325070 U CN201621325070 U CN 201621325070U CN 206269715 U CN206269715 U CN 206269715U
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- centre bore
- dial gauge
- exemplar
- correction
- check
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Abstract
The utility model discloses a kind of centre bore device for accurately measuring.Including dial gauge（1）With check and correction exemplar（6）；Dial gauge（1）Axle sleeve（2）It is cased with adapter sleeve outward（3）, adapter sleeve（3）Through lock-screw（7）With axle sleeve（2）It is fixed；Check and correction exemplar（6）Positioned at adapter sleeve（3）End；Dial gauge（1）Measurement bar（4）End is provided with measurement head（5）, measurement head（5）With check and correction exemplar（6）On centre bore contact.The utility model is to measure main tool with general measurer dial gauge, by making coupling sleeve and original spherical measurement head on dial gauge being changed system into 60 ° of cones, and check and correction exemplar is made for proofreading scale, and combine taper ratio relation, the accurate measurement of centre bore conical surface outside diameter can be completed, so as to pass through machining control, it is ensured that the uniformity of batch products, so as to ensure the follow-up Product Precision as machining benchmark, while also improving the production efficiency of subsequent handling.
Description
Technical field
The utility model is related to a kind of centre bore device for accurately measuring, belongs to mechanical measurement technique field.
Background technology
Centre bore as Machining of Shaft-type Parts technological datum and detection benchmark, so as to reached technological datum and detection base
Accurate unification, has been effectively ensured the positional precision between each machined surface.The existing corresponding national standard specification of centre bore（Its structure
As shown in Figure 2）, its processing is processed using molding cutter centre drill, and national standard is carried out to the form and precision of centre drill
Specification, the main precision of the centre bore after processing includes 60 ° of taper precision and big stomidium footpath D1 size accuracies, wherein taper precision
Ensured by molding cutter, the size in aperture is determined by process, the difference in size of taper hole diameter will influence centre hole axis to fixed
Position precision, so as to influence to position the machining accuracy and efficiency of axis products with centre bore, it is seen that control shaft class product center hole
Aperture size precision is the important step of relation following process quality and production efficiency.In the center hole machined of existing axis products
During, because centre bore is 60 ° of cone angles, conventional method is unable to the size in accurate detection aperture, generally by the way of comparing
Measurement, error is larger, and the error of processing rear center hole pore size is also just bigger.
Utility model content
The purpose of this utility model is, there is provided a kind of centre bore device for accurately measuring.To solve existing e measurement technology
It is not enough.
The technical solution of the utility model：
A kind of centre bore device for accurately measuring, it is characterised in that：Including dial gauge and check and correction exemplar；Outside the axle sleeve of dial gauge
Adapter sleeve is cased with, adapter sleeve is fixed through lock-screw with axle sleeve；Check and correction exemplar is located at adapter sleeve end；The measurement rod end of dial gauge
Portion is provided with measurement head, and measurement head is contacted with the centre bore on check and correction exemplar.
In the device for accurately measuring of aforesaid central hole, the adapter sleeve coordinates with the axle sleeve small―gap suture of dial gauge.
In the device for accurately measuring of aforesaid central hole, the measurement head is connected with measurement bar end thread；Measurement head is 60 ° of circles
Conehead, the outside diameter of measurement head is more than the outside diameter for being detected the centre bore conical surface.
In the device for accurately measuring of aforesaid central hole, the centre bore on the check and correction exemplar is standard size centre bore.
Compared with prior art, the utility model is measurement main tool with general measurer dial gauge, is coupled by making
Covering and original spherical measurement head on dial gauge is changed system into 60 ° of cones, and make check and correction exemplar is used to proofread scale, and ties
Taper ratio relation is closed, you can complete the accurate measurement of centre bore conical surface outside diameter, so as to pass through machining control, it is ensured that batch
The uniformity of product, so that ensure the follow-up Product Precision as machining benchmark, while also improving the production of subsequent handling
Efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the schematic diagram for proofreading centre bore on exemplar.
Marked in figure：1- dial gauges, 2- axle sleeves, 3- adapter sleeves, 4- measurement bars, 5- measurement heads, 6- check and correction exemplar, 7- locks
Tight screw.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples, but not as new to this practicality
Any limitation of type.
A kind of centre bore device for accurately measuring, as shown in figure 1, including dial gauge 1 and check and correction exemplar 6；The axle sleeve of dial gauge 1
Adapter sleeve 3 is cased with outside 2, adapter sleeve 3 is fixed through lock-screw 7 with axle sleeve 2；Check and correction exemplar 6 is located at the end of adapter sleeve 3；Dial gauge 1
The end of measurement bar 4 be provided with measurement head 5, measurement head 5 is contacted with the centre bore on check and correction exemplar 6.Adapter sleeve 3 and dial gauge 1
The small―gap suture of axle sleeve 2 coordinates.Measurement head 5 is connected with the end thread of measurement bar 4；Measurement head 5 is 60 ° of nose cones, the big end of measurement head 5
With diameter greater than the outside diameter of the detected centre bore conical surface.Centre bore on check and correction exemplar 6 is standard size centre bore.
Embodiment
This example is made up of dial gauge 1, adapter sleeve 3, measurement head 5, check and correction exemplar 6, lock-screw 7.Adapter sleeve 3 and dial gauge
The small―gap suture of axle sleeve 2 on 1 coordinates, and is fixed by lock-screw 7 after adjusting axial location according to measurement request.Measurement head 5 and hundred
Divide the thread connection of measurement bar 4 of table 1, and the original spherical measurement head of dial gauge 1 is changed to 60 ° of coniform measurement heads 5, circular cone
The taper of measurement head 5 of shape matches with the taper of centre bore, and the coniform outside diameter of measurement head 5 have to be larger than tested measured center
The outside diameter D1 of the hole conical surface.The centre bore of exemplar 6 is proofreaded as shown in Fig. 2 by the theoretical size requirement system of detected centre bore
Make, and measure the actual size D1 in the big stomidium footpath of the conical surface, the deviation of computation and measurement during so as to Product checking.
It is of the present utility model to adjust and use：
During adjusting apparatus, first the original spherical measurement head of dial gauge 1 is changed into 60 ° of coniform measurement heads 5, then will connection
Set 3 is enclosed within the outside of axle sleeve 2 of dial gauge 1, and the position of adapter sleeve 3 is adjusted with check and correction exemplar 6, and then tightening lock-screw 7 will even
The position of female connector 3 is fixed., it is necessary to take into full account the operation principle of dial gauge 1 during adjusting apparatus, i.e. the actual size in product center hole
During beyond the higher limit or lower limit that require tolerance, dial gauge is remained in normal measuring state.
The use of device：First with check and correction exemplar 6, the benchmark zero-bit of dial gauge 1 is determined, according to the upper of detected centre bore
Lower deviation, calculates the upper lower deviation of detection.Due to be detected be tapered hole diameter, and the device detection be axially
Variable, therefore there is the conversion of data here, the taper ratio that the ratio calculation formula according to taper calculates 60 ° is 1：
The taper of 0.866, i.e., 60 ° is 0.866mm in the displacement tolerance of axial direction in the dimensional tolerance reacting condition of diametrically 1mm,
Thus the upper lower deviation of measured value is drawn：
The upper deviation=（Product center hole upper dimension bound value-check and correction exemplar measured value）×0.866
Lower deviation=（Product center hole lower size limit value-check and correction exemplar measured value）×0.866
Upper lower deviation according to the measured value for calculating determines the indicating range of pointer in dial gauge.During measurement, connection
With tested part end face by putting down, when measurement head 5 coordinates with centre bore, the minimum indicating value of dial gauge 1 is measurement to the end face of set 3
Value.
Above-mentioned measurement apparatus are the ratio relations according to taper, and axle is converted into by the radial missing for accurately measuring taper
Measured to variable, it is achieved thereby that during the hole machined of center dimensional accuracy control, it is ensured that the uniformity of batch products, have
Effect ensures the precision of the machining benchmark of subsequent handling, so as to ensure that following process quality and production efficiency.
Claims (4)
1. a kind of centre bore device for accurately measuring, it is characterised in that：Including dial gauge（1）With check and correction exemplar（6）；Dial gauge（1）
Axle sleeve（2）It is cased with adapter sleeve outward（3）, adapter sleeve（3）Through lock-screw（7）With axle sleeve（2）It is fixed；Check and correction exemplar（6）It is located at
Adapter sleeve（3）End；Dial gauge（1）Measurement bar（4）End is provided with measurement head（5）, measurement head（5）With check and correction exemplar（6）On
Centre bore contact.
2. centre bore device for accurately measuring according to claim 1, it is characterised in that：The adapter sleeve（3）With dial gauge（1）
Axle sleeve（2）Small―gap suture coordinates.
3. centre bore device for accurately measuring according to claim 2, it is characterised in that：The measurement head（5）With measurement bar（4）
End thread is connected；Measurement head（5）It is 60 ° of nose cones, measurement head（5）Outside diameter be more than and be detected the big of the centre bore conical surface
End diameter.
4. centre bore device for accurately measuring according to claim 3, it is characterised in that：The check and correction exemplar（6）On center
Hole is standard size centre bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621325070.5U CN206269715U (en) | 2016-12-05 | 2016-12-05 | A kind of centre bore device for accurately measuring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621325070.5U CN206269715U (en) | 2016-12-05 | 2016-12-05 | A kind of centre bore device for accurately measuring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206269715U true CN206269715U (en) | 2017-06-20 |
Family
ID=59041715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621325070.5U Active CN206269715U (en) | 2016-12-05 | 2016-12-05 | A kind of centre bore device for accurately measuring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206269715U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405697A (en) * | 2018-11-15 | 2019-03-01 | 中国人民解放军第五七二工厂 | A kind of device with centimeter check pipe sleeve sealing line position |
| CN109916283A (en) * | 2019-04-23 | 2019-06-21 | 济南华元汽车电子有限公司 | Engine non-disassembly detection device |
-
2016
- 2016-12-05 CN CN201621325070.5U patent/CN206269715U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405697A (en) * | 2018-11-15 | 2019-03-01 | 中国人民解放军第五七二工厂 | A kind of device with centimeter check pipe sleeve sealing line position |
| CN109916283A (en) * | 2019-04-23 | 2019-06-21 | 济南华元汽车电子有限公司 | Engine non-disassembly detection device |
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