CN103245281A - Device and method for measuring symmetry degree of key groove of shaft - Google Patents

Device and method for measuring symmetry degree of key groove of shaft Download PDF

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Publication number
CN103245281A
CN103245281A CN2013101614735A CN201310161473A CN103245281A CN 103245281 A CN103245281 A CN 103245281A CN 2013101614735 A CN2013101614735 A CN 2013101614735A CN 201310161473 A CN201310161473 A CN 201310161473A CN 103245281 A CN103245281 A CN 103245281A
Authority
CN
China
Prior art keywords
dial gauge
dial indicator
key groove
mount pad
horizon bar
Prior art date
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.)
Pending
Application number
CN2013101614735A
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Chinese (zh)
Inventor
罗太景
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xuzhou College of Industrial Technology
Original Assignee
Xuzhou College of Industrial Technology
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 Xuzhou College of Industrial Technology filed Critical Xuzhou College of Industrial Technology
Priority to CN2013101614735A priority Critical patent/CN103245281A/en
Publication of CN103245281A publication Critical patent/CN103245281A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a device and method for measuring the symmetry degree of a key groove of a shaft, and belongs to machining precision measurement tools. The device comprises a horizontal rod, a perpendicular rod which is mounted on the horizontal rod and can move left and right on the horizontal rod, a dial indicator mounting base, a dial indicator and an equal ratio lever which is hinged with the dial indicator mounting base through the shaft. The method comprises the steps as follows: the perpendicular rod is adjusted and moved to the position of the horizontal rod according to the size of a measured workpiece, zero calibration is performed through a try square and the rods are fixed tightly through a screw; the dial indicator mounting base is fixed on the horizontal rod, the dial indicator is mounted on the dial indicator mounting base, and an indicator head touch tip of the dial indicator is contacted with the equal ratio level; the dial indicator is aligned to a zero position and moved horizontally in an axial direction of the key groove, and the maximum deviation value of the dial indicator is read; then, the measurement device is turned for 180 degrees with the measurement method, and the maximum deviation value of the dial indicator is read; and finally measured values are calculated, so that an error value of the symmetry degree is obtained, and the qualification of the symmetry degree of the key groove of the shaft is judged. The structure is simple, the operation is convenient, the measurement range is wide, and the accuracy is high.

Description

Shaft key groove symmetry measurement mechanism and measuring method
Technical field
The present invention relates to a kind of shaft key groove symmetry measurement mechanism and measuring method, belong to the machining accuracy survey instrument.
Background technology
The measurement of shaft key groove symmetry is widely used in motor, lathe, automobile making and all axial workpieces with the keyway connection.At present, shaft key groove symmetry measuring method is mainly measured with V shape iron, flat board, dial gauge and gauge stand common name signing method.The said method operation is not convenient, and measurement means is loaded down with trivial details, and precision reliability is poor.
Summary of the invention
For addressing the above problem, the invention provides a kind of shaft key groove symmetry measurement mechanism and measuring method.
The present invention realizes with following technical scheme: a kind of shaft key groove symmetry measurement mechanism, and it comprises horizon bar, is installed on the horizon bar also can move left and right pass through to connect the fastening mobile vertical rod of fastening bolt on horizon bar; Also comprise the dial gauge mount pad that is installed on the horizon bar, dial gauge and be installed in dial gauge mount pad outer end and the dial gauge mount pad by the hinged geometric ratio lever of axle; Have the dial gauge pilot hole at the dial gauge mount pad, dial gauge is installed on the dial gauge mount pad by pilot hole, and its gauge outfit is touched point and contacted with the geometric ratio lever, and the other end of geometric ratio lever is provided with the contact that contacts with measured workpiece point.
A kind of shaft key groove symmetry measuring method is utilized above-mentioned shaft key groove symmetry measurement mechanism, and concrete grammar is as follows: adjust mobile vertical rod to the correct position of horizon bar and with try square school zero according to the size of measured workpiece earlier, and fastening with connecting fastening bolt again; The dial gauge mount pad is fixed on the horizon bar, again dial gauge is contained on the dial gauge mount pad, and the tactile point of gauge outfit of dial gauge is contacted with the geometric ratio lever; Then dial gauge to zero-bit, again along the axial translation of keyway, read the dial gauge maximum deflection difference value, and record dial gauge maximum deflection difference value; Then, this measurement mechanism direction of measurement is transferred turnback, geometric ratio lever gauge head is contacted with another groove face of measured workpiece keyway, simultaneously the measurement face of mobile vertical rod is contacted with the axle maximum gauge, measuring method is the same, reads the dial gauge maximum deflection difference value; At last measurement numerical value is converted and obtain the symmetry error value, judge shaft key groove symmetry qualification.
The invention has the beneficial effects as follows: shaft key groove symmetry measurement mechanism is simple in structure, and is easy to operate, and measurement range is wide, the precision height, in light weight, be easy to carry, can satisfy the requirement that present machining is measured the shaft key groove symmetry, be to measure the desirable instrument utensil of shaft key groove symmetry.
Description of drawings
Below in conjunction with drawings and Examples structure of the present invention and using method are further specified.
Fig. 1 is structural representation of the present invention.
Among the figure: 1, connect fastening bolt, 2, horizon bar, 3, dial gauge, 4, trip bolt, 5, the dial gauge mount pad, 6, the geometric ratio lever, 7, mobile vertical rod.
Embodiment
As shown in Figure 1, it has a horizon bar 2 shaft key groove symmetry measurement mechanism, horizon bar 2 install one can be on horizon bar the mobile vertical rod 7 of move left and right, mobile vertical rod 7 is fastened on the horizon bar 2 by connecting fastening bolt 1; Be installed in the dial gauge mount pad 5 on the horizon bar 2, dial gauge 3 and be installed in dial gauge mount pad 5 outer ends and dial gauge mount pad 5 by the hinged geometric ratio lever 7 of axle; Have the dial gauge pilot hole at dial gauge mount pad 5, dial gauge 3 is installed on the dial gauge mount pad 5 by pilot hole, and its gauge outfit is touched point and contacted with geometric ratio lever 6, and the other end of geometric ratio lever 7 is provided with the contact that contacts with measured workpiece point.
A kind of shaft key groove symmetry measuring method, utilize above-mentioned shaft key groove symmetry measurement mechanism, concrete grammar is as follows: as shown in Figure 1, adjust mobile vertical rod 7 to the correct position of horizon bar 2 and with try square school zero according to the size of measured workpiece earlier, and fastening with connecting fastening bolt 1 again; Dial gauge mount pad 5 is fixed on the horizon bar 2, again dial gauge 3 is contained on the dial gauge mount pad 5, and the tactile point of gauge outfit of dial gauge is contacted with geometric ratio lever 6; Then dial gauge to zero-bit, again along the axial translation of keyway, read the dial gauge maximum deflection difference value, and record dial gauge maximum deflection difference value; Then, this measurement mechanism direction of measurement is transferred turnback, geometric ratio lever 6 gauge heads are contacted with another groove face of measured workpiece keyway, simultaneously the measurement face of mobile vertical rod 7 is contacted with the axle maximum gauge, measuring method is the same, reads the dial gauge maximum deflection difference value; At last measurement numerical value is converted and obtain the symmetry error value, judge shaft key groove symmetry qualification.

Claims (2)

1. shaft key groove symmetry measurement mechanism, it is characterized in that: it comprises horizon bar (2), be installed in that horizon bar (2) is gone up and can be on horizon bar move left and right by connecting the fastening mobile vertical rod (7) of fastening bolt (1); Also comprise the dial gauge mount pad (5) that is installed on the horizon bar (2), dial gauge (3) and be installed in dial gauge mount pad (5) outer end and dial gauge mount pad (5) by the hinged geometric ratio lever (7) of axle; Have the dial gauge pilot hole at dial gauge mount pad (5), dial gauge 3 is installed on the dial gauge mount pad (5) by pilot hole, its gauge outfit is touched point and is contacted with geometric ratio lever (6), and the other end of geometric ratio lever (7) is provided with the contact that contacts with measured workpiece point.
2. shaft key groove symmetry measuring method, it is characterized in that, utilize the described shaft key groove symmetry of claim 1 measurement mechanism, concrete grammar is as follows: adjust mobile vertical rod (7) to the correct position of horizon bar (2) and with try square school zero according to the size of measured workpiece earlier, and fastening with connecting fastening bolt (1) again; Dial gauge mount pad (5) is fixed on the horizon bar (2), again dial gauge 3 is contained on the dial gauge mount pad (5), and the tactile point of gauge outfit of dial gauge is contacted with geometric ratio lever (6); Then dial gauge to zero-bit, again along the axial translation of keyway, read the dial gauge maximum deflection difference value, and record dial gauge maximum deflection difference value; Then, this measurement mechanism direction of measurement is transferred turnback, geometric ratio lever (6) gauge head is contacted with another groove face of measured workpiece keyway, simultaneously the measurement face of mobile vertical rod (7) is contacted with the axle maximum gauge, measuring method is the same, reads the dial gauge maximum deflection difference value; At last measurement numerical value is converted and obtain the symmetry error value, judge shaft key groove symmetry qualification.
CN2013101614735A 2013-05-03 2013-05-03 Device and method for measuring symmetry degree of key groove of shaft Pending CN103245281A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013101614735A CN103245281A (en) 2013-05-03 2013-05-03 Device and method for measuring symmetry degree of key groove of shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013101614735A CN103245281A (en) 2013-05-03 2013-05-03 Device and method for measuring symmetry degree of key groove of shaft

Publications (1)

Publication Number Publication Date
CN103245281A true CN103245281A (en) 2013-08-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013101614735A Pending CN103245281A (en) 2013-05-03 2013-05-03 Device and method for measuring symmetry degree of key groove of shaft

Country Status (1)

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CN (1) CN103245281A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105043221A (en) * 2015-06-05 2015-11-11 贵州航天精工制造有限公司 Method for measuring symmetry degree of bolt slot and tool clamp
CN105157541A (en) * 2015-05-21 2015-12-16 贵州航锐航空精密零部件制造有限公司 Detection auxiliary device for degree of symmetry of straight slot of bolt

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87200753U (en) * 1987-01-23 1987-11-04 天津发电设备厂 Measuring apparatus for symmetry of shaft key groove
JPH1047906A (en) * 1996-07-31 1998-02-20 Isuzu Motors Ltd Measuring device for crank shaft
CN101975541A (en) * 2010-10-12 2011-02-16 淮阴工学院 Instrument for measuring degree of symmetry of key slot in hole
CN102261885A (en) * 2011-04-20 2011-11-30 徐州工业职业技术学院 Device for measuring key slot symmetry degree of shaft
CN102338608A (en) * 2011-08-25 2012-02-01 桂林福达曲轴有限公司 Checking fixture for measuring axial dimension of crankshaft pin hole and detection method
CN102937406A (en) * 2012-11-16 2013-02-20 徐州工业职业技术学院 Shaft keyway symmetry measuring device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87200753U (en) * 1987-01-23 1987-11-04 天津发电设备厂 Measuring apparatus for symmetry of shaft key groove
JPH1047906A (en) * 1996-07-31 1998-02-20 Isuzu Motors Ltd Measuring device for crank shaft
CN101975541A (en) * 2010-10-12 2011-02-16 淮阴工学院 Instrument for measuring degree of symmetry of key slot in hole
CN102261885A (en) * 2011-04-20 2011-11-30 徐州工业职业技术学院 Device for measuring key slot symmetry degree of shaft
CN102338608A (en) * 2011-08-25 2012-02-01 桂林福达曲轴有限公司 Checking fixture for measuring axial dimension of crankshaft pin hole and detection method
CN102937406A (en) * 2012-11-16 2013-02-20 徐州工业职业技术学院 Shaft keyway symmetry measuring device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105157541A (en) * 2015-05-21 2015-12-16 贵州航锐航空精密零部件制造有限公司 Detection auxiliary device for degree of symmetry of straight slot of bolt
CN105043221A (en) * 2015-06-05 2015-11-11 贵州航天精工制造有限公司 Method for measuring symmetry degree of bolt slot and tool clamp

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Application publication date: 20130814