CN102435126A - Instrument for measuring symmetry degree of key groove - Google Patents
Instrument for measuring symmetry degree of key groove Download PDFInfo
- Publication number
- CN102435126A CN102435126A CN2011104248182A CN201110424818A CN102435126A CN 102435126 A CN102435126 A CN 102435126A CN 2011104248182 A CN2011104248182 A CN 2011104248182A CN 201110424818 A CN201110424818 A CN 201110424818A CN 102435126 A CN102435126 A CN 102435126A
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- CN
- China
- Prior art keywords
- hole
- plunger
- main body
- key piece
- keyway
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses an instrument for measuring the symmetry degree of a key groove. The instrument comprises a dial indicator, a bracket, a main body, a key block, screws with cup points, a plunger, a bolt, a mandril, a steel ball and a sliding chute, wherein the bracket is roughly L-shaped and comprises an oblique long side and a vertical short side; the sliding chute is formed on the long side; the dial indicator passes through the short side horizontally and is fixed by using a first screw; the main body passes through the sliding chute and is fixed on the bracket through a second screw; a hollow cavity is formed on the lower part of the main body; a through hole is formed in a side of the hollow cavity; the key block is provided with a conical through hole; the steel ball and the mandril are arranged in the conical through hole sequentially and fixed through the screws with the cup points on the mandril; the key block is arranged in the hollow cavity; the plunger is arranged in the through hole; and the bolt and the through hole are matched with each other to tightly press the plunger and the key block, so that the key block is fixed in the hollow cavity. In the scheme, the measurement process is simple, and the instrument is high in measurement efficiency and precision.
Description
Technical field
The present invention relates to a kind of measuring instrument, it is difficult that especially a kind of solution keyway exists symmetry to detect on the diameter of axle, and the keyway symmetry measuring instrument of the low problem of measuring accuracy difference and detection efficiency belongs to the surveying instrument technical field.
Background technology
The kind of key is more in web member, and it is widely used on the mechanical transmission mechanism.Key is higher with the symmetry accuracy requirement of axis on the diameter of axle, and it all can produce material impact to quality of fit, assembly quality and the production efficiency of gearing.At present, keyway processing is common processing technology on the milling machine, and the height of machining precision often influences the mission life of torque transmission shaft transmitting accuracy and key and keyway, adopts usually the skill in using a kitchen knife in cookery and ocular estimate are combined to confirm the Working position of keyway on the diameter of axle.When the accuracy of form and position of checking keyway on the diameter of axle, adopt profile board usually or on flat board, detect apparatus by means of v block, dividing head, height gauge etc., measure the symmetry of keyway on the diameter of axle with indirect detection method.The problem that keyway symmetry measuring instrument commonly used at present exists is that the measuring accuracy that has is lower, and the measurement cost that has is higher, and the complicated operation that has is not easy to processing site and uses.
Summary of the invention
The present invention seeks to have proposed a kind of solution keyway and on the diameter of axle, exist symmetry to detect difficulty, the keyway symmetry measuring instrument of the low problem of measuring accuracy difference and detection efficiency for the deficiency that overcomes prior art.
For achieving the above object, the technical scheme that the present invention adopts is: a kind of keyway symmetry measuring instrument comprises clock gauge, support, main body, key piece, recessed end screw, plunger, bolt, push rod, steel ball, chute; Said support is roughly L-shaped, comprises top, minor face; Said long limit is obliquely installed; Said minor face vertically is provided with; Said chute is arranged on the long limit; Said clock gauge level is passed minor face, and uses first screw retention; Said main body is passed chute through second screw and is fixed on the support; The bottom of said main body is provided with cavity; The sidepiece of said cavity is provided with a through hole; Said key piece is provided with conical through-hole; Said steel ball, push rod are successively set in the said conical through-hole, and through the recessed end screw retention on the push rod; Said key piece is arranged in the cavity; Said plunger is arranged in the through hole; Said bolt cooperates with through hole and compresses plunger and key piece, and the key piece is fixed in the cavity; During work, the keyway on the axle to be detected is inserted in the bottom of key piece, and the contact of said clock gauge contacts with the excircle of axle to be detected.
Preferably, said main body roughly is cuboid.
Preferably, be provided with O-ring seals between said bolt and the plunger.
Because the utilization of technique scheme, the present invention compared with prior art has advantage:
Keyway symmetry measuring instrument of the present invention, testing process is simple, and detection efficiency is high, and precision is high; The present invention program is simple in structure, practical.
Description of drawings
Below in conjunction with accompanying drawing technical scheme of the present invention is described further:
Accompanying drawing 1 is the sectional view of keyway symmetry measuring instrument of the present invention;
Wherein: 1, clock gauge; 2, first screw; 3, support; 4, second screw; 5, main body; 6, key piece; 7, recessed end screw; 8, plunger; 9, O-ring seals; 10, bolt; 11, push rod; 12, steel ball; 13, chute.
Embodiment
Be depicted as a kind of keyway symmetry measuring instrument of the present invention like accompanying drawing 1, comprise clock gauge 1, support 3, main body 5, key piece 6, recessed end screw 7, plunger 8, bolt 8, push rod 11, steel ball 12, chute 13; Said support 3 is roughly L-shaped, comprises top, minor face; Said long limit is obliquely installed; Said minor face vertically is provided with; Said chute 13 is arranged on the long limit; Said clock gauge 1 level is passed minor face, and fixing with first screw 2; Said main body 5 is passed chute through second screw 4 and is fixed on the support; Regulate second position of screw 4 in chute 13, can realize the height of main body 5 is regulated; The bottom of said main body 5 is provided with cavity (not marking); The sidepiece of said cavity is provided with a through hole (not marking); Said key piece 6 is provided with conical through-hole (for marking); Said steel ball 12, push rod 11 are successively set in the said conical through-hole, and fixing through the recessed end screw on the push rod 11 7; The degree of tightness of adjusting recessed end screw 7 can realize the fine setting to the width of key piece 6; Said key piece 6 is arranged in the cavity; Said plunger 8 is arranged in the through hole; Said bolt 10 cooperates with through hole and compresses plunger 8 and key piece 6, and key piece 6 is fixed in the cavity; Said main body roughly is cuboid; Be provided with O-ring seals between said bolt and the plunger.During work, the keyway on the axle to be detected is inserted in the bottom of key piece 6, and the contact of said clock gauge 1 contacts with the excircle of axle to be detected; Read the numerical value of clock gauge, then, the anti-turnback of axle to be detected is measured once again, writes down the reading of clock gauge, and the difference of twice clock gauge reading gets final product the symmetry of the keyway on the measured axis.
Because the utilization of technique scheme, the present invention compared with prior art has advantage:
Keyway symmetry measuring instrument of the present invention, testing process is simple, and detection efficiency is high, and precision is high; The present invention program is simple in structure, practical.
The foregoing description only is explanation technical conceive of the present invention and characteristics; Its purpose is to let the personage that is familiar with this technology can understand content of the present invention and implements; Can not limit protection scope of the present invention with this; All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (3)
1. a keyway symmetry measuring instrument is characterized in that: comprise clock gauge, support, main body, key piece, recessed end screw, plunger, bolt, push rod, steel ball, chute; Said support is roughly L-shaped, comprises top, minor face; Said long limit is obliquely installed; Said minor face vertically is provided with; Said chute is arranged on the long limit; Said clock gauge level is passed minor face, and uses first screw retention; Said main body is passed chute through second screw and is fixed on the support; The bottom of said main body is provided with cavity; The sidepiece of said cavity is provided with a through hole; Said key piece is provided with conical through-hole; Said steel ball, push rod are successively set in the said conical through-hole, and through the recessed end screw retention on the push rod; Said key piece is arranged in the cavity; Said plunger is arranged in the through hole; Said bolt cooperates with through hole and compresses plunger and key piece, and the key piece is fixed in the cavity; During work, the keyway on the axle to be detected is inserted in the bottom of key piece, and the contact of said clock gauge contacts with the excircle of axle to be detected.
2. keyway symmetry measuring instrument according to claim 1 is characterized in that: said main body roughly is cuboid.
3. keyway symmetry measuring instrument according to claim 1 is characterized in that: be provided with O-ring seals between said bolt and the plunger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104248182A CN102435126A (en) | 2011-12-17 | 2011-12-17 | Instrument for measuring symmetry degree of key groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104248182A CN102435126A (en) | 2011-12-17 | 2011-12-17 | Instrument for measuring symmetry degree of key groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102435126A true CN102435126A (en) | 2012-05-02 |
Family
ID=45983336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104248182A Pending CN102435126A (en) | 2011-12-17 | 2011-12-17 | Instrument for measuring symmetry degree of key groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102435126A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148986A (en) * | 2014-08-19 | 2014-11-19 | 山西维达机械制造有限公司 | Special indexing device for keyseat |
| CN106524869A (en) * | 2016-12-28 | 2017-03-22 | 无锡透平叶片有限公司 | Detection device for detecting wall thickness of blade tenon threaded hole |
| CN109959323A (en) * | 2017-12-26 | 2019-07-02 | 三橡股份有限公司 | The detection device and its detection method of rail freight adapter rubber pad symmetry |
| CN110793410A (en) * | 2019-12-05 | 2020-02-14 | 天津天海精密锻造有限公司 | Motor shaft key groove symmetry degree checking fixture |
-
2011
- 2011-12-17 CN CN2011104248182A patent/CN102435126A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148986A (en) * | 2014-08-19 | 2014-11-19 | 山西维达机械制造有限公司 | Special indexing device for keyseat |
| CN106524869A (en) * | 2016-12-28 | 2017-03-22 | 无锡透平叶片有限公司 | Detection device for detecting wall thickness of blade tenon threaded hole |
| CN109959323A (en) * | 2017-12-26 | 2019-07-02 | 三橡股份有限公司 | The detection device and its detection method of rail freight adapter rubber pad symmetry |
| CN109959323B (en) * | 2017-12-26 | 2024-06-07 | 三橡股份有限公司 | Device and method for detecting symmetry degree of bearing saddle rubber pad of railway wagon |
| CN110793410A (en) * | 2019-12-05 | 2020-02-14 | 天津天海精密锻造有限公司 | Motor shaft key groove symmetry degree checking fixture |
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Legal Events
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120502 |
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| RJ01 | Rejection of invention patent application after publication |