CN109059720B - Automobile gear shaft runout detection tool and detection method thereof - Google Patents
Automobile gear shaft runout detection tool and detection method thereof Download PDFInfo
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- CN109059720B CN109059720B CN201811281968.0A CN201811281968A CN109059720B CN 109059720 B CN109059720 B CN 109059720B CN 201811281968 A CN201811281968 A CN 201811281968A CN 109059720 B CN109059720 B CN 109059720B
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- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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- G01B5/0025—Measuring of vehicle parts
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Abstract
The invention discloses an automobile gear shaft runout checking fixture which comprises a fixedly installed vertical central shaft and a central fixed gear, wherein the central fixed gear is coaxially and integrally arranged at the top of the central shaft; a circle of ring grooves are formed in the circumferential outer wall of the central fixed gear; a plurality of standard tooth bodies are circumferentially distributed in the ring groove in an array manner; the invention has simple structure and convenient detection of the meshing runout value, converts the meshing runout value into the circular runout of the ring gauge, has high detection precision, and the roundness tolerance grade of the outer ring of the ring gauge can reach 1T 1-1T 2, so the outer ring smooth surface of the ring gauge is an ideal roundness smooth surface, the runout value of the first side head on the outer ring of the ring gauge is the runout value S when the gear and a standard gear body do tight meshing motion, converts the meshing runout of the gear into the circular runout, and is more beneficial to measurement while ensuring the precision; moreover, the device is convenient to assemble and disassemble, can also effectively detect the circular runout of the gear shaft, and obtains the precision condition of the gear shaft more comprehensively.
Description
Technical Field
The invention belongs to the field of automobile part detection tools, and particularly relates to an automobile gear shaft runout detection tool and a detection method thereof.
Background
The gear shaft is the main drive disk assembly in the car, and the gear can inevitable production phenomenon of beating with the gear in the process of doing intermeshing, can cause great noise easily if this radial runout error is too big, and the shake, and then influence the holistic stability of equipment, consequently needs a special utensil of examining to detect the gear and the gear in the jumping amount of meshing in-process.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides an automobile gear shaft runout detection tool capable of detecting gear meshing runout and a detection method thereof.
The technical scheme is as follows: in order to achieve the purpose, the automobile gear shaft runout gauge comprises a fixedly installed vertical central shaft and a central fixed gear, wherein the central fixed gear is coaxially and integrally arranged at the top of the central shaft; a circle of ring grooves are formed in the circumferential outer wall of the central fixed gear; a plurality of standard tooth bodies are circumferentially distributed in the ring groove in an array manner;
the outer side of the central shaft is rotatably provided with a central rotating seat through a first bearing, and the central shaft also comprises a constellation rotating along with the central rotating seat, and the constellation is provided with a vertical shaft hole;
the gear shaft to be tested comprises a gear to be tested, and the upper end and the lower end of the gear to be tested are respectively and integrally connected with an upper shaft and a lower shaft which have the same axle center; the lower end of the lower shaft of the gear shaft to be tested is detachably and rotatably sleeved in the shaft hole through a second bearing, and the gear to be tested of the gear shaft to be tested is meshed and connected with the standard gear body on the center fixed gear;
the upper side of the central fixed gear is coaxially and fixedly provided with a rotating motor, an output shaft of the rotating motor is fixedly connected with a transverse arm seat, the tail end of the transverse arm seat is vertically connected with a driving arm, the top end of the upper shaft is higher than the driving arm, the driving arm can rotate along with the output shaft to be in tangential contact with the shaft wall of the upper shaft, and the driving arm can push the upper shaft to do synchronous motion; a second electronic dial indicator is fixedly arranged on the driving arm, and a second measuring rod of the second electronic dial indicator is arranged in a horizontal posture; when the driving arm tangentially contacts the shaft wall of the upper shaft, the axis extension line of the second measuring rod is intersected with the axes of the upper shaft and the output shaft, and the second measuring head at the tail end of the second measuring rod continuously contacts the shaft wall of the upper shaft.
Furthermore, four guide post cylinders which are transverse and parallel to each other are fixedly arranged at one side end of the central rotating seat, and the four guide post cylinders are distributed in a rectangular array; one side end of the row constellation is fixedly provided with four transverse and mutually parallel guide posts, and the tail ends of the four guide posts movably extend into the cylinders of the four guide post cylinders respectively; a linear motor is fixedly arranged on the central rotating seat; a spring seat is arranged at the tail end of a telescopic push rod of the linear motor; the push rod direction of a telescopic push rod of the linear motor is parallel to each guide column barrel; the force transmission spring is coaxially arranged between the spring seat and the constellation, and two ends of the force transmission spring are fixedly connected with the spring seat and the constellation respectively.
Furthermore, the axis of the telescopic push rod is intersected with the axis of the shaft hole and the axis of the central shaft; the axis extension line of the first measuring rod passes through the circle center of the ring gauge, and the telescopic push rod is positioned in the central part enclosed by the four guide column barrels; the upper side and the lower side of the ring groove are respectively an upper ring groove edge and a lower ring groove edge.
The device further comprises a horizontal disc-shaped base, a cylinder is coaxially arranged on the disc-shaped base, and the upper end of the cylinder is fixedly connected with the central shaft coaxially; the outer wall of the cylinder is fixedly sleeved with a ring gauge with a smooth outer wall; a first electronic dial indicator is fixedly suspended below the constellation through a suspension column; the first measuring rod of the first electronic dial indicator is arranged in a horizontal posture, the first measuring rod is located at the height of the ring gauge, and a first measuring head at the tail end of the first measuring rod is in contact with the outer ring polished surface of the ring gauge.
Further, the detection method of the automobile gear shaft runout detection tool comprises the following steps:
the tool for the gear shaft to be tested comprises: setting the center distance between the shaft hole and the central shaft as d, the outer contour radius of the center fixed gear as R, and the top circle radius of the gear to be measured as R; the gear shaft to be tested is not installed on the constellation in the initial state, at the moment, the telescopic push rod of the driving linear motor performs gradually-extending movement, at the moment, the constellation starts to perform movement away from the central shaft gradually under the action of outward thrust of the force transmission spring, so that d is gradually increased, the linear motor is suspended until the constellation moves to a state that d is larger than R + R, and therefore the tool of the gear shaft to be tested cannot generate interference; at the moment, the lower end of the lower shaft of the gear shaft to be tested is sleeved in the inner ring of the second bearing, then the telescopic push rod of the linear motor is driven to do gradually-shortened motion, the planetary gear and the gear to be tested start to do gradually-approaching motion to the central shaft under the action of the tension of the force transmission spring until the gear to be tested is meshed with the standard gear body in the annular groove, the telescopic push rod of the linear motor is continuously driven to do a section of gradually-shortened motion after the gear to be tested is completely meshed with the standard gear body in the annular groove, so that the force transmission spring is in a stretched state, then the linear motor is suspended, the planet seat continuously receives the pull-back elastic force of the force transmission spring, and further the continuous tight meshing state of the gear to be tested; meanwhile, a first measuring head of a first measuring rod of the first electronic dial indicator is also in a state of continuously contacting the outer ring smooth surface of the ring gauge; at the moment, completing the tooling of the gear shaft to be tested;
measuring engagement runout: starting a rotating motor, enabling a driving arm to rotate along with an output shaft to be in tangential contact with a shaft wall of an upper shaft, then continuously driving the rotating motor, enabling the driving arm to push the upper shaft to do synchronous motion, further enabling a gear to be tested to do planetary rotation around a central fixed gear, and enabling the gear to be tested to do tight meshing motion with a standard gear body in a ring groove while the gear to be tested does planetary rotation around the central fixed gear; the method comprises the steps that a first measuring rod of a first electronic dial indicator also rotates around the outer ring of a measuring ring gauge in real time in the process that a gear to be measured rotates around a center fixed gear in a planetary mode, the first electronic dial indicator records the jumping value of a first measuring head on the outer ring of the ring gauge in real time, the outer ring of the ring gauge is a standard circle, therefore, the first electronic dial indicator records the jumping value of the first measuring head on the outer ring of the ring gauge in real time, namely the jumping value S when the gear to be measured and a standard gear body are in tight meshing motion, and when the jumping value S is larger than the maximum allowable meshing jumping value, the gear to be measured is judged to be unqualified;
measuring the circular runout of the upper shaft and the lower shaft: the gear to be tested performs planetary rotation around the central fixed gear, meanwhile, the second measuring head at the tail end of the second measuring rod continuously contacts with the shaft wall of the upper shaft, and the upper shaft is in a continuous autorotation state under the action of tight gear meshing motion of the gear to be tested and the standard gear body in the ring groove, so that the second measuring head at the tail end of the second measuring rod records a jitter value H on the shaft wall of the upper shaft in real time; therefore, the real-time jitter value M of the roundness of the upper shaft wall is H-S.
Has the advantages that: the invention has simple structure and convenient detection of the meshing runout value, converts the meshing runout value into the circular runout of the ring gauge, has high detection precision, and the roundness tolerance grade of the outer ring of the ring gauge can reach 1T 1-1T 2, so the outer ring smooth surface of the ring gauge is an ideal roundness smooth surface, the runout value of the first measuring head on the outer ring of the ring gauge is the runout value S when the gear to be measured and the standard gear body are in tight meshing motion, converts the meshing runout of the gear to be measured into the circular runout, and is more beneficial to measurement while ensuring the precision; moreover, the device is convenient to assemble and disassemble, can also effectively detect the circular runout of the gear shaft, and obtains the precision condition of the gear shaft more comprehensively.
Drawings
FIG. 1 is a first view of the overall structure of the present invention;
FIG. 2 is a second view of the overall structure of the present invention;
FIG. 3 is a cross-sectional view of the overall construction of the present invention;
FIG. 4 is a partial schematic view of the transmission portion of the present invention;
FIG. 5 is a schematic view of the disassembly of a gear shaft to be measured;
FIG. 6 is a schematic diagram showing a separation state of a gear to be measured and a center fixed gear;
fig. 7 is a top view configuration of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The automobile gear shaft runout gauge shown in the attached figures 1 to 7 comprises a fixedly installed vertical central shaft 9 and a central fixed gear 7, wherein the central fixed gear 7 is coaxially and integrally arranged at the top of the central shaft 9; a circle of ring grooves 8 are formed in the circumferential outer wall of the central fixed gear 7; a plurality of standard tooth bodies 27 are circumferentially distributed in the ring groove 8 in an array manner; under an absolute ideal state, the meshing of the two standard gears has no jumping error, and the meshing of the gears jumps due to the manufacturing error in the actual working process, in this embodiment, the standard tooth body 27 in the ring slot 8 is a high-precision standard tooth body which is manufactured in advance, the high-precision standard tooth body can be regarded as an ideal tooth body, and the gear 23 to be detected of the gear shaft to be detected is the gear to be detected, so that the jumping value generated by the mutual meshing of the gear 23 to be detected and the standard tooth body 27 is the meshing jumping error of the gear 23 to be detected;
the outer side of the central shaft 9 is rotatably provided with a central rotating seat 10 through a first bearing 1, the planetary gear set further comprises a planetary seat 18 which rotates along with the central rotating seat 10, and a vertical shaft hole 17 is formed in the planetary seat 18;
the gear shaft to be tested comprises a gear 23 to be tested, and the upper end and the lower end of the gear 23 to be tested are respectively and integrally connected with an upper shaft 12 and a lower shaft 11 which have the same axle center; the lower end of the lower shaft 11 of the gear shaft to be tested is detachably sleeved in the shaft hole 17 in a rotating manner through a second bearing 19, and the gear 23 to be tested of the gear shaft to be tested is meshed and connected with the standard gear body 27 on the central fixed gear 7;
a rotating motor 6 is coaxially and fixedly arranged on the upper side of the central fixed gear 7, a transverse arm base 16 is fixedly connected to an output shaft 24 of the rotating motor 6, a driving arm 15 is vertically connected to the tail end of the transverse arm base 16, the top end of the upper shaft 12 is higher than the driving arm 15, the driving arm 15 can rotate along with the output shaft 24 to tangentially contact the shaft wall of the upper shaft 12, and the driving arm 15 can push the upper shaft 12 to move synchronously; a second electronic dial indicator 14 is fixedly arranged on the driving arm 15, and a second measuring rod 13 of the second electronic dial indicator 14 is arranged in a horizontal posture; when the driving arm 15 tangentially contacts the shaft wall of the upper shaft 12, the axis extension line of the second measuring rod 13 intersects with the axes of the upper shaft 12 and the output shaft 24, and the second measuring head 25 at the tail end of the second measuring rod 13 continuously contacts the shaft wall of the upper shaft 12.
Four guide post cylinders 29 which are transverse and parallel to each other are fixedly arranged at one side end of the central rotating seat 10, and the four guide post cylinders 29 are distributed in a rectangular array; one side end of the row constellation 18 is fixedly provided with four transverse and mutually parallel guide posts 28, and the tail ends of the four guide posts 28 respectively movably extend into four guide post cylinders 29; the central rotating base 10 is fixedly provided with a linear motor 2; a spring seat 4 is arranged at the tail end of a telescopic push rod 3 of the linear motor 2; the push rod direction of the telescopic push rod 3 of the linear motor 2 is parallel to each guide column cylinder 29; the planetary gear transmission mechanism is characterized by further comprising a force transmission spring 5, wherein the force transmission spring 5 is coaxially arranged between the spring seat 4 and the planetary gear seat 18, and two ends of the force transmission spring 5 are fixedly connected with the spring seat 4 and the planetary gear seat 18 respectively.
The axis of the telescopic push rod 3 is intersected with the axis of the shaft hole 17 and the axis of the central shaft 9; the axis extension line of the first measuring rod 33 passes through the center of the ring gauge 20, and the telescopic push rod 3 is positioned at the central part enclosed by the four column guide cylinders 29; the upper side and the lower side of the ring groove 8 are respectively an upper ring groove edge 31 and a lower ring groove edge 30.
The device also comprises a horizontal disc-shaped base 22, a column 32 is coaxially arranged on the disc-shaped base 22, and the upper end of the column 32 is fixedly connected with the central shaft 9 coaxially; the outer wall of the column 32 is coaxially and fixedly sleeved with a ring gauge 20 of which the outer wall is a smooth surface; a first electronic dial indicator 21 is fixedly suspended below the row constellation 18 through a suspension column 018; the first measuring rod 33 of the first electronic dial indicator 21 is arranged in a horizontal posture, the first measuring rod 33 is located at the height of the ring gauge 20, and the first measuring head 26 at the tail end of the first measuring rod 33 contacts the outer ring smooth surface of the ring gauge 20; the roundness tolerance grade of the outer ring of the ring gauge can reach 1T 1-1T 2, so that the smooth surface of the outer ring of the ring gauge 20 is an ideal roundness smooth surface, the runout value of the first measuring head 26 on the outer ring of the ring gauge 20 is the runout value S when the gear 23 to be measured and the standard gear body 27 are in tight meshing motion, meshing runout of the gear is converted into circular runout, and the accuracy is guaranteed while the measurement is facilitated.
The gear shaft detection method, the process and the technical progress of the scheme are summarized as follows:
the tool for the gear shaft to be tested comprises: setting the center distance between the shaft hole 17 and the central shaft 9 as d, the outer contour radius of the center fixed gear 7 as R, and the addendum circle radius of the gear 23 to be measured as R; the gear shaft to be measured is not installed on the constellation 18 in the initial state, the telescopic push rod 3 of the linear motor 2 is driven to move in a gradually extending mode at the moment, the constellation 18 starts to move away from the central shaft 9 gradually under the action of outward thrust of the force transmission spring 5, d is gradually increased, the linear motor 2 is suspended until the constellation 18 moves to the state that d is larger than R + R, and therefore the tool of the gear shaft to be measured cannot generate interference; at the moment, the lower end of the lower shaft 11 of the gear shaft to be measured is sleeved in the inner ring of the second bearing 19, then the telescopic push rod 3 of the linear motor 2 is driven to do gradually-shortened motion, at the moment, the planetary carrier 18 and the gear 23 to be measured start to do motion gradually approaching the central shaft 9 under the action of the tension of the force transmission spring 5 until the gear 23 to be measured is meshed with the standard gear body 27 in the ring groove 8, after the gear 23 to be measured is completely meshed with the standard gear body 27 in the ring groove 8, the telescopic push rod 3 of the linear motor 2 is continuously driven to do a section of gradually-shortened motion, so that the force transmission spring 5 is in a stretched state, then the linear motor 2 is suspended, the planetary carrier 18 continuously receives the pull-back elastic force of the force transmission spring 5, and further the continuous tight meshing state of the gear 23 to be; meanwhile, the first measuring head 26 of the first measuring rod 33 of the first electronic dial indicator 21 is in a state of continuously contacting the outer ring smooth surface of the ring gauge 20; at the moment, completing the tooling of the gear shaft to be tested;
measuring engagement runout: starting the rotating motor 6, enabling the driving arm 15 to rotate along with the output shaft 24 to tangentially contact the shaft wall of the upper shaft 12, then continuously driving the rotating motor 6, enabling the driving arm 15 to push the upper shaft 12 to do synchronous motion, further enabling the gear 23 to be tested to do planetary rotation around the central fixed gear 7, and enabling the gear 23 to be tested to do tight gear meshing motion with the standard gear body 27 in the ring groove 8 while the gear 23 to be tested does planetary rotation around the central fixed gear 7; the method comprises the steps that in the process that a gear 23 to be tested rotates around a center fixed gear 7 in a planetary mode, a first measuring rod 33 of a first electronic dial indicator 21 also rotates around the outer ring of a measuring ring gauge 20 in real time, the first electronic dial indicator 21 records the jumping value of a first measuring head 26 on the outer ring of the ring gauge 20 in real time, the outer ring of the ring gauge 20 is a standard circle, therefore, the jumping value of the first measuring head 26 on the outer ring of the ring gauge 20 is recorded by the first electronic dial indicator 21 in real time, namely the jumping value S when the gear 23 to be tested and a standard gear body 27 are in tight meshing movement, and when the jumping value S is larger than the maximum allowable value of meshing jumping, the gear 23 to be tested is judged to;
measuring the circular runout of the upper shaft and the lower shaft: the gear 23 to be measured makes planetary rotation around the fixed gear 7 at the center, meanwhile, the second measuring head 25 at the tail end of the second measuring rod 13 is continuously contacted with the shaft wall of the upper shaft 12, and under the action of tight gear meshing motion of the gear 23 to be measured and the standard gear body 27 in the ring groove 8, the upper shaft 12 is also in a continuous autorotation state, so that the second measuring head 25 at the tail end of the second measuring rod 13 records the runout value H on the shaft wall of the upper shaft 12 in real time, and because the rotation of the upper shaft 12 is completed under the condition of meshing runout, the second measuring head 25 records the runout value H on the shaft wall of the upper shaft 12 in real time, and the runout value S when the gear 23 to be measured and the standard gear body 27 make tight meshing motion and the comprehensive effect of the runout value M of the; therefore, the real-time jitter value M of the roundness of the shaft wall of the upper shaft 12 is H-S.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (5)
1. The utility model provides an utensil is examined to car pinion run-out which characterized in that: the device comprises a vertical central shaft (9) and a central fixed gear (7) which are fixedly installed, wherein the central fixed gear (7) is coaxially and integrally arranged at the top of the central shaft (9); a circle of ring grooves (8) are formed in the circumferential outer wall of the central fixed gear (7); a plurality of standard tooth bodies (27) are distributed in the annular groove (8) in a circumferential array;
the outer side of the central shaft (9) is rotatably provided with a central rotating seat (10) through a first bearing (1), the device also comprises a constellation table (18) which rotates along with the central rotating seat (10), and the constellation table (18) is provided with a vertical shaft hole (17);
the gear shaft to be tested comprises a gear (23) to be tested, and the upper end and the lower end of the gear (23) to be tested are respectively and integrally connected with an upper shaft (12) and a lower shaft (11) which are coaxial; the lower end of a lower shaft (11) of the gear shaft to be tested is detachably, rotatably and sleeved in the shaft hole (17) through a second bearing (19), and a gear (23) to be tested of the gear shaft to be tested is meshed and connected with a standard gear body (27) on the center fixed gear (7);
the upper side of the central fixed gear (7) is coaxially and fixedly provided with a rotating motor (6), an output shaft (24) of the rotating motor (6) is fixedly connected with a transverse arm seat (16), the tail end of the transverse arm seat (16) is vertically connected with a driving arm (15), the top end of the upper shaft (12) is higher than the driving arm (15), the driving arm (15) can rotate to tangentially contact the shaft wall of the upper shaft (12) along with the output shaft (24), and the driving arm (15) can push the upper shaft (12) to do synchronous motion; a second electronic dial indicator (14) is fixedly arranged on the driving arm (15), and a second measuring rod (13) of the second electronic dial indicator (14) is arranged in a horizontal posture; when the driving arm (15) tangentially contacts the shaft wall of the upper shaft (12), the axis extension line of the second measuring rod (13) is intersected with the axes of the upper shaft (12) and the output shaft (24), and the second measuring head (25) at the tail end of the second measuring rod (13) continuously contacts the shaft wall of the upper shaft (12).
2. The automobile gear shaft runout testing fixture according to claim 1, characterized in that: four guide post cylinders (29) which are transverse and parallel to each other are fixedly arranged at one side end of the central rotating seat (10), and the four guide post cylinders (29) are distributed in a rectangular array; one side end of the row constellation (18) is fixedly provided with four transverse and mutually parallel guide posts (28), and the tail ends of the four guide posts (28) respectively movably extend into the cylinders of the four guide post cylinders (29); a linear motor (2) is fixedly arranged on the central rotating seat (10); a spring seat (4) is arranged at the tail end of a telescopic push rod (3) of the linear motor (2); the push rod direction of a telescopic push rod (3) of the linear motor (2) is parallel to each guide column cylinder (29); the force transmission device is characterized by further comprising a force transmission spring (5), wherein the force transmission spring (5) is coaxially arranged between the spring seat (4) and the constellation (18), and two ends of the force transmission spring (5) are fixedly connected with the spring seat (4) and the constellation (18) respectively.
3. The automobile gear shaft runout testing fixture according to claim 2, characterized in that: the device also comprises a horizontal disc-shaped base (22), a cylinder (32) is coaxially arranged on the disc-shaped base (22), and the upper end of the cylinder (32) is fixedly connected with the central shaft (9) coaxially; the outer wall of the cylinder (32) is coaxially and fixedly sleeved with a ring gauge (20) of which the outer wall is a smooth surface; a first electronic dial indicator (21) is fixedly suspended below the row constellation (18) through a suspension column (018); a first measuring rod (33) of the first electronic dial indicator (21) is arranged in a horizontal posture, the first measuring rod (33) is located at the height of the ring gauge (20), and a first measuring head (26) at the tail end of the first measuring rod (33) is in contact with the outer ring smooth surface of the ring gauge (20).
4. The automobile gear shaft runout testing fixture according to claim 3, characterized in that: the axis of the telescopic push rod (3) is intersected with the axes of the shaft hole (17) and the central shaft (9); the axis extension line of the first measuring rod (33) passes through the circle center of the ring gauge (20), and the telescopic push rod (3) is positioned at the central part enclosed by the four guide column sleeves (29); the upper side and the lower side of the ring groove (8) are respectively an upper ring groove edge (31) and a lower ring groove edge (30).
5. The detection method of the automobile gear shaft runout gauge according to claim 4, characterized in that:
the tool for the gear shaft to be tested comprises: setting the center distance between the shaft hole (17) and the central shaft (9) as d, the outer contour radius of the center fixed gear (7) as R, and the addendum circle radius of the gear (23) to be measured as R; the gear shaft to be detected is not installed on the row constellation (18) in the initial state, the telescopic push rod (3) of the driving linear motor (2) moves in a gradually extending mode at the moment, the row constellation (18) starts to move away from the central shaft (9) gradually under the action of outward thrust of the force transmission spring (5), d is gradually increased, the linear motor (2) is suspended until the row constellation (18) moves to the state that d is larger than R + R, and therefore the tool of the gear shaft to be detected cannot generate interference; at the moment, the lower end of the lower shaft (11) of the gear shaft to be measured is sleeved in the inner ring of the second bearing (19), then the telescopic push rod (3) of the linear motor (2) is driven to do the motion of gradually shortening, at the moment, the planet carrier (18) and the gear (23) to be tested start to do the motion of gradually approaching the central shaft (9) under the tension action of the force transmission spring (5) until the gear (23) to be tested is meshed with the standard tooth body (27) in the ring groove (8), after the gear (23) to be tested is completely meshed with the standard tooth body (27) in the ring groove (8), the telescopic push rod (3) of the linear motor (2) is continuously driven to do the motion of gradually shortening for a section, so that the force transmission spring (5) is in the stretched state, then the linear motor (2) is suspended, the planet seat (18) continuously receives the pull-back elasticity of the force transmission spring (5), further maintaining the continuous tight meshing state of the gear (23) to be measured and the standard tooth body (27) in the ring groove (8); meanwhile, a first measuring head (26) of a first measuring rod (33) of the first electronic dial indicator (21) is also in a state of continuously contacting an outer ring smooth surface of the ring gauge (20); at the moment, completing the tooling of the gear shaft to be tested;
measuring engagement runout: starting the rotating motor (6), enabling the driving arm (15) to rotate along with the output shaft (24) to tangentially contact the shaft wall of the upper shaft (12), then continuing to drive the rotating motor (6), enabling the driving arm (15) to push the upper shaft (12) to do synchronous motion, further enabling the gear (23) to be tested to do planetary rotation around the central fixed gear (7), and enabling the gear (23) to be tested to do tight gear meshing motion with the standard tooth body (27) in the ring groove (8) while the gear (23) to be tested does planetary rotation around the central fixed gear (7); in the process that the gear (23) to be tested performs planetary rotation around the center fixed gear (7), a first measuring rod (33) of a first electronic dial indicator (21) also rotates around the outer ring of the measuring ring gauge (20) in real time, the first electronic dial indicator (21) records the jumping value of a first measuring head (26) on the outer ring of the measuring ring gauge (20) in real time, the outer ring of the measuring ring gauge (20) is a standard circle, therefore, the first electronic dial indicator (21) records the jumping value of the first measuring head (26) on the outer ring of the measuring ring gauge (20) in real time, namely the jumping value S when the gear (23) to be tested and the standard gear body (27) perform tight meshing movement, and when the jumping value S is larger than the meshing jumping allowable maximum value, the gear (23) to be tested is judged to be unqualified;
measuring the circular runout of the upper shaft and the lower shaft: the gear (23) to be measured rotates in a planetary mode around the central fixed gear (7), meanwhile, the second measuring head (25) at the tail end of the second measuring rod (13) is in continuous contact with the shaft wall of the upper shaft (12), under the action that the gear (23) to be measured and the standard gear body (27) in the annular groove (8) do tight gear meshing motion, the upper shaft (12) is in a continuous autorotation state, further the second measuring head (25) at the tail end of the second measuring rod (13) records the runout value H on the shaft wall of the upper shaft (12) in real time, and the runout value H on the shaft wall of the upper shaft (12) is recorded by the second measuring head (25) in real time under the condition that meshing runout exists, so that the runout value H on the shaft wall of the upper shaft (12) is the comprehensive effect of the runout value S when the gear (23) to be measured and the standard gear body (27) do tight meshing motion and the roundness runout value; therefore, the real-time jitter value M of the roundness of the shaft wall of the upper shaft (12) is H-S.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811281968.0A CN109059720B (en) | 2018-10-31 | 2018-10-31 | Automobile gear shaft runout detection tool and detection method thereof |
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| CN201811281968.0A CN109059720B (en) | 2018-10-31 | 2018-10-31 | Automobile gear shaft runout detection tool and detection method thereof |
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| CN109059720B true CN109059720B (en) | 2020-05-22 |
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| CN109059720A (en) | 2018-12-21 |
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