CN202255258U - Digital large-size inner hole key slot symmetry measuring instrument - Google Patents
Digital large-size inner hole key slot symmetry measuring instrument Download PDFInfo
- Publication number
- CN202255258U CN202255258U CN201120385515XU CN201120385515U CN202255258U CN 202255258 U CN202255258 U CN 202255258U CN 201120385515X U CN201120385515X U CN 201120385515XU CN 201120385515 U CN201120385515 U CN 201120385515U CN 202255258 U CN202255258 U CN 202255258U
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- CN
- China
- Prior art keywords
- gauge head
- inner hole
- key slot
- measuring instrument
- hole key
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Abstract
The utility model relates to a digital large-size inner hole key slot symmetry measuring instrument, which consists of two parts: a main measuring head and a sub measuring head, wherein the main measuring head comprises an instrument frame provided with a digital display instrument, the sub measuring head comprises a fixed measuring head, a movable measuring head and a support frame, the support frame is connected with the instrument frame, one side of the support frame is provided with a fixed measuring head and a movable measuring head which are connected together, and the other side of the support frame is provided with a top rod. The digital large-size inner hole key slot symmetry measuring instrument is convenient, reliable and fast and solves the neutral difficult problem in the inner hole key slot symmetry measuring process.
Description
Technical field
The utility model relates to the Machining Technology field, relates in particular to digital large scale inner hole key slot symmetry measuring instrument.
Background technology
Keyway be engineering goods central axis hole counterpart commonly used structure, the keyway two sides are one of keyway important technological parameters to the symmetry of axis.Transmit moment of torsion if rely on flat key to connect, after symmetry is overproof, can destroy the fiting property of key and groove, the assembling difficulty takes place when serious.For good interchangeability is arranged; Can assemble smoothly, the width of keyway size to hole or axle has proposed strict symmetry requirement respectively, keyway new standard (GB1095-79) regulation; Symmetry is generally chosen by 7 to 9 class precisions of form and position tolerance, so work in-process will inevitably attract great attention.
At present, many machine-building producer does not also have a kind of measurement mechanism of suitable on-site rapid measurement inner hole key slot symmetry.Traditional inner hole key slot symmetry is measured; Generally be that leveling ruler is close to keyway one side, measure the full-size between leveling ruler and hole wall, use the same method then and measure the another side of keyway; Two readings reduce 2 mutually, are the symmetry deviation of keyway to the center, hole.This measuring method cumulative errors is bigger, and accuracy is low, and cumbersome.In addition, also useful keyway model is directly measured the inner hole key slot symmetry, and this measuring method is fit to small size; And a model can only be measured a kind of keyway of specification; Measurement range is little, and precision depends on the machining precision in model and hole, and the model manufacturing cost is higher.Also have indivedual enterprise design to cross some measurement mechanisms, still, the adjustment centering process that these measurement mechanisms have is very complicated, and the specification that the measurement different size that has needs is a lot, thereby does not all obtain fine popularization.
For the measurement of the symmetry error of large-scale hole type parts keyway, because that the simulation of element to be measured and reference element embodies is difficult, therefore, its measuring process complicacy, accuracy are low, and still do not have large scale inner hole key slot symmetry measuring instrument at present.
The utility model content
The utility model technical matters to be solved provide a kind of convenience, reliably, digital large scale inner hole key slot symmetry measuring instrument efficiently.
For addressing the above problem, the described digital large scale inner hole key slot symmetry measuring instrument of the utility model, it is characterized in that: this measuring instrument is made up of main gauge head and secondary gauge head two parts; Said main gauge head comprises the dial framework that is fixed with digital display instrument; Said secondary gauge head comprises fixedly gauge head, movable gauge head and support; Said support links to each other with said dial framework, and the one of which side is provided with by said fixedly gauge head that links together and said movable gauge head, and its opposite side is provided with push rod.
Said fixedly gauge head is that interference fit is connected with said support.
Said movable gauge head is connected through dovetail guide with said support; The said dovetail guide of the said support other end is provided with the dovetail slippage axle sleeve that is complementary with it, and this dovetail slippage cover is connected with said push rod fine thread.
The middle part of said support is provided with positioning core axle, and this positioning core axle is provided with the location axle sleeve that is threaded with it, and links to each other with said dial framework through regulating bearing pin; Said positioning core axle is provided with rotational pin.
Said fixedly gauge head and said movable gauge head longitudinally laterally arrange, and link together through said set bolt, and this set bolt is provided with set nut.
Said adjusting bearing pin is that fine thread is connected with said location axle sleeve.
The utility model compared with prior art has the following advantages:
1, because the digital display instrument in the utility model is connected with the adjusting bearing pin, regulating bearing pin is that fine thread is connected with the location axle sleeve, and push rod overlaps also for fine thread is connected with the dovetail slippage, and radial dimension can be regulated as required, therefore, has enlarged measurement range; Digital display instrument has the resolution height, the characteristics of convenient reading simultaneously.
2, because the utility model adopts two place's radiai adjustment of major-minor gauge head to be the fine thread connection; And be provided with dovetail guide as the slippage governor motion, therefore, regulate stable; Precision is high; Thereby reduced the cumulative errors of routine measurement, solved in the keyway symmetry measuring process to a neutral difficult problem, improved measuring accuracy.
3, the utility model has remedied the deficiency of the keyway of domestic large-scale hole type parts to degree error-detecting aspect, for the keyway of hole type parts in the big machinery processing industry to degree error-detecting provide a kind of convenience, reliably, digital keyway symmetry measuring instrument efficiently.
Description of drawings
Below in conjunction with accompanying drawing the embodiment of the utility model is done further detailed explanation.
Fig. 1 is the structural representation of the utility model.
Among the figure: the 1-fixedly movable gauge head 3-of gauge head 2-set nut 4-set bolt 5-support 6-positioning core axle 7-location axle sleeve 8-dovetail slippage cover 9-push rod 10-rotational pin 11-regulates bearing pin 12-dial framework 13-digital display instrument.
Embodiment
As shown in Figure 1, digital large scale inner hole key slot symmetry measuring instrument, this measuring instrument is made up of main gauge head and secondary gauge head two parts.
Wherein: main gauge head comprises the dial framework 12 that is fixed with digital display instrument 13.
Secondary gauge head comprises fixedly gauge head 1, movable gauge head 2 and support 5.Support 5 links to each other with dial framework 12, and the one of which side is provided with by fixedly gauge head that links together 1 and movable gauge head 2, and its opposite side is provided with push rod 9.
Fixedly gauge head 1 is connected for interference fit with support 5.
The middle part of support 5 is provided with positioning core axle 6, and this positioning core axle 6 is provided with the location axle sleeve 7 that is threaded with it, and links to each other with dial framework 12 through regulating bearing pin 11; Positioning core axle 6 is provided with rotational pin 10.Regulating bearing pin 11 is connected for fine thread with location axle sleeve 7.
Fixedly gauge head 1 longitudinally laterally arranges with movable gauge head 2, and links together through set bolt 4, and this set bolt 4 is provided with set nut 3.
During measurement, fitted in the fixedly gauge head 1 of secondary probe part and inner hole key slot one side, again with of the dovetail guide slippage of movable gauge head 2 along support 5; Up to fitting with the keyway another side; Fixing through set bolt 4, regulate dovetail slippage cover 8 and push rod 9 that the other end is connected with support 5 dovetails then, push rod 9 overlaps 8 fine threads with the dovetail slippage and is connected; Make push rod 9 head centerings and be adjacent to, again with 3 lockings of the set nut on the set bolt 4 with hole wall.Drive through dial framework 12 and to regulate bearing pins 11 and rotate, and radially outer moving, till adapting, regulate bearing pin 11 and dial framework 12 for interference fit is connected with institute gaging hole footpath size, adjusting bearing pin 11 with locate axle sleeve 7 and be connected for fine thread.Through hand rotation pin 10 positioning core axle 6 is rotated again, thereby location axle sleeve 7 is moved up and down, further move up and down, till digital display instrument 13 readings reach minimum value by regulating bearing pin 11 drive dial frameworks 12.The another side of method measuring workpieces is write down least count at this moment according to this, then twice reading is reduced 2 mutually, is the symmetry deviation of keyway to the center, hole.
Claims (6)
1. digital large scale inner hole key slot symmetry measuring instrument is characterized in that: this measuring instrument is made up of main gauge head and secondary gauge head two parts; Said main gauge head comprises the dial framework (12) that is fixed with digital display instrument (13); Said secondary gauge head comprises fixedly gauge head (1), movable gauge head (2) and support (5); Said support (5) links to each other with said dial framework (12), and the one of which side is provided with by said fixedly gauge head (1) that links together and said movable gauge head (2), and its opposite side is provided with push rod (9).
2. digital large scale inner hole key slot symmetry measuring instrument as claimed in claim 1, it is characterized in that: said fixedly gauge head (1) is connected for interference fit with said support (5).
3. digital large scale inner hole key slot symmetry measuring instrument as claimed in claim 1, it is characterized in that: said movable gauge head (2) is connected through dovetail guide with said support (5); The said dovetail guide of said support (5) other end is provided with the dovetail slippage axle sleeve (8) that is complementary with it, and this dovetail slippage cover (8) is connected with said push rod (9) fine thread.
4. digital large scale inner hole key slot symmetry measuring instrument as claimed in claim 1; It is characterized in that: the middle part of said support (5) is provided with positioning core axle (6); This positioning core axle (6) is provided with the location axle sleeve (7) that is threaded with it, and links to each other with said dial framework (12) through regulating bearing pin (11); Said positioning core axle (6) is provided with rotational pin (10).
5. digital large scale inner hole key slot symmetry measuring instrument as claimed in claim 1; It is characterized in that: said fixedly gauge head (1) and said movable gauge head (2) longitudinally laterally arrange; And link together through said set bolt (4), this set bolt (4) is provided with set nut (3).
6. digital large scale inner hole key slot symmetry measuring instrument as claimed in claim 4, it is characterized in that: said adjusting bearing pin (11) is connected for fine thread with said location axle sleeve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120385515XU CN202255258U (en) | 2011-10-11 | 2011-10-11 | Digital large-size inner hole key slot symmetry measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120385515XU CN202255258U (en) | 2011-10-11 | 2011-10-11 | Digital large-size inner hole key slot symmetry measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202255258U true CN202255258U (en) | 2012-05-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120385515XU Expired - Fee Related CN202255258U (en) | 2011-10-11 | 2011-10-11 | Digital large-size inner hole key slot symmetry measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202255258U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604355A (en) * | 2013-10-16 | 2014-02-26 | 格林精密部件(苏州)有限公司 | Gauge for measuring symmetry of valve sleeve oil grooves with respect to reference hole |
| CN104215156A (en) * | 2014-09-28 | 2014-12-17 | 重庆新兴齿轮有限公司 | Key groove reference block and single-hole single and double key groove symmetry degree detector |
| CN112247669A (en) * | 2020-09-21 | 2021-01-22 | 渤海造船厂集团有限公司 | Tapered shaft connecting key groove machining allowance measuring device and method |
-
2011
- 2011-10-11 CN CN201120385515XU patent/CN202255258U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604355A (en) * | 2013-10-16 | 2014-02-26 | 格林精密部件(苏州)有限公司 | Gauge for measuring symmetry of valve sleeve oil grooves with respect to reference hole |
| CN104215156A (en) * | 2014-09-28 | 2014-12-17 | 重庆新兴齿轮有限公司 | Key groove reference block and single-hole single and double key groove symmetry degree detector |
| CN112247669A (en) * | 2020-09-21 | 2021-01-22 | 渤海造船厂集团有限公司 | Tapered shaft connecting key groove machining allowance measuring device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20131011 |