CN86202782U - Symmetrical characteristic detector for axial key groove - Google Patents

Symmetrical characteristic detector for axial key groove Download PDF

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Publication number
CN86202782U
CN86202782U CN 86202782 CN86202782U CN86202782U CN 86202782 U CN86202782 U CN 86202782U CN 86202782 CN86202782 CN 86202782 CN 86202782 U CN86202782 U CN 86202782U CN 86202782 U CN86202782 U CN 86202782U
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CN
China
Prior art keywords
key groove
measuring
detector
shaft key
pole
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
CN 86202782
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Chinese (zh)
Inventor
董锡翰
Original Assignee
董锡翰
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 董锡翰 filed Critical 董锡翰
Priority to CN 86202782 priority Critical patent/CN86202782U/en
Publication of CN86202782U publication Critical patent/CN86202782U/en
Ceased legal-status Critical Current

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Abstract

The utility model relates to a symmetrical characteristic detector for the axial key groove which can measure the positional error of the machine parts. A position block is designed and adopted to simulate a measured center plane. An axis external circle simulates a reference shaft line to realize the principle of the measurement of the plane to the symmetrical characteristic of the reference axis. The detector is composed of a presser foot, a measuring tool body, a supporting rod, a locking device, and a dial gauge or a dial indicator, and is used for detecting the symmetrical characteristic of the axial key groove. The utility model has the advantages of high measuring precision, simple and compact structure, easy fabrication, low cost, convenient operation, and unlimited measuring range.

Description

Symmetrical characteristic detector for axial key groove
The utility model be a kind of be the shaft key groove symmetry detector of feature with measurement mechanical part position error mechanically.
The symmetry of shaft key groove directly influences axle and the assembly quality of being with keyhole.Be the mismachining tolerance of Control Shaft keyway, the precision of proof bar keyway must detect the shaft key groove symmetry.
The shaft spline symmetry meter of recent disclosed Minghang Tool General Factory, Shanghai (CN-GK85103770) is a kind of measurer that detects the shaft key groove symmetry.There is following technical shortcoming and defect in this measurer:
1 its measuring principle essence is that the radial displacement at measurement gauge head ball center, keyway two base angle is poor, relates to the crudy of keyway bottom land, comprises that bottom land surface smoothness and bottom land are to groove lateral vertical side degree.The shaft key groove bottom surface is a non-working surface, and its surface smoothness will liken to about the low two-stage of the key slot side of workplace, and groove bottom do not have technical requirement with the lateral vertical side degree, and precision is assurance not.By standard GB 1958-80 " shape and position of related features detect regulation ", irrelevant at the bottom of shaft key groove symmetry and the keyway, i.e. error effect at the bottom of the groove is not answered in the detection of symmetry.And this measurer is accumulated to the mismachining tolerance at the bottom of the keyway in the testing result of keyway symmetry inevitably, makes to detect the error increasing, and measuring accuracy reduces, so there is original reason error in this amount instrument;
2 its measuring methods relate to be put into keyway with the spherical shape gauge head and measures.Owing to limit by the size of garden ball contact tip, the narrow keyway of groove width size can't be realized measurement, so the sensing range of this amount instrument is subjected to the restriction that can't overcome;
Some part in 3 its structures such as proof-reading block, ratio multiplying arrangement etc., manufacturing accuracy requires high, so this amount instrument has certain manufacture difficulty, and cost is higher;
4 its measurements are adjusted more numerous, also will proofread and correct with special-purpose proof-reading block, also will select the amount instrument of different size simultaneously, make things convenient for inadequately so this amount instrument uses still.
The purpose of design of shaft key groove symmetry detector of the present utility model is: 1. improve measuring accuracy, reduce measuring error; 2. measurement range is unrestricted, can survey the workpiece of arbitrary dimension specification; 3. simplify the internal structure of an organization and manufacturing process, make it easy to use, be easy to make, reduce cost and favourable popularization.
The measuring principle of this shaft key groove symmetry detector is, simulates tested central plane with the locating piece that is contained in the shaft key groove, with an axle cylindrical simulation datum axis, realizes the measurement in the face of the reference axis symmetry.Detector has an arc measuring, as the connection standard of whole measurer; A fixing presser foot and a movable presser feet on the other side are contained on the measuring, overlay simultaneously respectively on the workplace of locating piece during measurement; Dial gauge is contained in measuring upper rack posts position by adjustment and is contained on the cylindrical that the dial framework position on the pole is pressed in spool with a gauge head and measures data.
Accompanying drawing is the structural representation of shaft key groove symmetry detector.Fixing presser foot (8) is packed on the measuring (1).Its end face is a working face, and on the other side is movable presser feet (6), and its end face is a sphere.Movable presser feet (6) is contained in the hole of measuring (1) with spring (5), makes the spring location by nut (3) by the outer end that is threaded in the hole.The outer end of movable presser feet is equipped with and is drawn cap (4).Pole (2) is contained in the hole, back of measuring (1), and can slide.Lock by the locking device (14) that is contained on the measuring after adjusting extension elongation.One end of pole (2) has the hole of assembling dial framework (12), and dial framework (12) can slide in the hole, adjusts after the extension elongation with locking nail (13) locking.Its end has the hole and the locking nail (10) of loading and unloading dial gauge or clock gauge (11), and gauge head (9) is contained in the measuring junction of table (11).In addition this detector in use nationality help locating piece (7), it is chosen in the standard key of all size shaft key groove correspondence.
The using method of shaft key groove symmetry detector is:
1 will show (11) is contained on the dial framework (12), with locking nail (10) locking, loads onto gauge head (9).Adjust the extension elongation of dial framework (12), be fastened on the pole (2) with locking nail (13);
2 load onto locating piece (7) in tested keyway;
3 draw cap (4) to make movable presser feet (6) retraction, and fixing presser foot (8) is contacted with locating piece (7), draw cap (4) yet unclamp, and movable presser feet (6) is pressed on the locating piece (7) by spring (5);
4 adjust the extension elongation of pole (2), make gauge head (9) gently be pressed in the outer round surface of measured axis, with locking device (14) locking, write down table (11) and go up reading;
5 draw back movable presser feet (6), and detector is turned 180 °, make two presser feet clamping and positioning pieces (7) again, write down the reading of table (11), and then this two reading is a shaft key groove cross section symmetry measurement data.
6 make presser feet (6), (8) move axially along locating piece (7), can go up at table (11) and survey two readings of minimax, are the axle key flute length to the symmetry measurement data.
This shaft key groove symmetry detector has remarkable advantage:
1 is not subjected to the restriction of measurement range, can detect the keyway on the diameter of axle of the width of keyway of any specification and arbitrary dimension.This is that the collapsing length of pole and dial framework can be by various diameter of axle adjusted size because distance is designed to by zero to the wide size of maximum specification keyway between the presser feet of this detector;
2 accuracy of detection height.This is because the measuring principle of this detector meets GB1958-80 " shape and position of related features detect regulation " fully, does not have original reason error;
3 is easy to use.Because simple in structure, very easily operation is adjusted, and the operator is not had the requirement of special technique level, dial gauge reading indication simultaneously obviously;
4 manufacturings easily, cost hang down and hold concurrently.Whole detector comprises parts seldom, and its structure and technology do not have specific (special) requirements again, favourable penetration and promotion and batch process;
5 are fit to metering test department uses, and is more suitable for using on workshop and the board.Because of it is small and exquisite, " do not spoil " not " expensive ".

Claims (5)

1, a kind of detector in order to the measurement axis keyway symmetry, form by measuring, presser feet and scale and support thereof, it is characterized in that a fixing presser foot [8] and movable presser feet [6] are contained on the arc measuring [1], dial framework [12] one ends are equipped with dial gauge or clock gauge [11], and it is contained in measuring [1] hole, back by pole [2].
2, shaft key groove symmetry detector as claimed in claim 1, the end face that it is characterized in that fixing presser foot (8) are the vertical planes of axially bored line of going up dress pole (2) with measuring (1).
3, shaft key groove symmetry detector as claimed in claim 1, the end face that it is characterized in that movable presser feet (6) is a sphere, can be by means of drawing cap (4), nut (3) and spring (5) are flexible in the hole of measuring (1), in order to press to calibrated bolck (7), make it closely to contact with fixing presser foot (8).
4, shaft key groove symmetry detector as claimed in claim 1 is characterized in that the axis of dial gauge or clock gauge (11) and the parallel axes of pole (2).
5, shaft key groove symmetry detector as claimed in claim 1 is characterized in that pole (2) and dial framework (12), all can slide in its pilot hole.
CN 86202782 1986-04-28 1986-04-28 Symmetrical characteristic detector for axial key groove Ceased CN86202782U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 86202782 CN86202782U (en) 1986-04-28 1986-04-28 Symmetrical characteristic detector for axial key groove

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 86202782 CN86202782U (en) 1986-04-28 1986-04-28 Symmetrical characteristic detector for axial key groove

Publications (1)

Publication Number Publication Date
CN86202782U true CN86202782U (en) 1987-12-23

Family

ID=4806231

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 86202782 Ceased CN86202782U (en) 1986-04-28 1986-04-28 Symmetrical characteristic detector for axial key groove

Country Status (1)

Country Link
CN (1) CN86202782U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101799267A (en) * 2010-03-19 2010-08-11 上海电气集团上海电机厂有限公司 Device and method for measuring symmetry of spindle keyways
CN102147229A (en) * 2011-02-15 2011-08-10 刘之增 Survey meter for measuring symmetry degree of two sides of guide post key groove relative to axis of valve guide hole of cylinder cover
CN102183192A (en) * 2011-05-24 2011-09-14 广州康迪克竞和机械制造有限公司 Device and method for detecting symmetry of key groove
CN102252583A (en) * 2011-03-31 2011-11-23 桂林福达曲轴有限公司 Fixture for detecting symmetry degree of key slot of automobile engine crankshaft
CN102589398A (en) * 2012-02-24 2012-07-18 桂林福达曲轴有限公司 Inspection device for measuring symmetry of crank journal pin hole to journal centre line and inspection method thereof
CN109253676A (en) * 2018-10-08 2019-01-22 彩虹(合肥)液晶玻璃有限公司 measuring device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101799267A (en) * 2010-03-19 2010-08-11 上海电气集团上海电机厂有限公司 Device and method for measuring symmetry of spindle keyways
CN102147229A (en) * 2011-02-15 2011-08-10 刘之增 Survey meter for measuring symmetry degree of two sides of guide post key groove relative to axis of valve guide hole of cylinder cover
CN102252583A (en) * 2011-03-31 2011-11-23 桂林福达曲轴有限公司 Fixture for detecting symmetry degree of key slot of automobile engine crankshaft
CN102183192A (en) * 2011-05-24 2011-09-14 广州康迪克竞和机械制造有限公司 Device and method for detecting symmetry of key groove
CN102589398A (en) * 2012-02-24 2012-07-18 桂林福达曲轴有限公司 Inspection device for measuring symmetry of crank journal pin hole to journal centre line and inspection method thereof
CN109253676A (en) * 2018-10-08 2019-01-22 彩虹(合肥)液晶玻璃有限公司 measuring device

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