Synchronous automatic positioning straight spur gear vision measuring instrument

Abstract

The utility model discloses a synchronous automatic positioning straight spur gear vision measuring instrument which comprises a platform (1), a gear center positioning platform (2), a gear center positioning device (3) and a vision measuring system (4). According to the utility model, the center of the gear can be accurately and rapidly positioned, rapid photographing is realized by using a vision measurement system, the structure is compact and simple, the operability is strong, and the measurement of straight toothed cylinder inner and outer gears with medium and small modules can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of gear measurement, in particular to a synchronous automatic positioning spur gear visual measuring instrument. Background Art

[0002] Small and medium modulus spur gears are typical components in mechanical transmission. They are widely used in manufacturing, automotive, aerospace and other fields. Measurement is the basis of manufacturing. Traditional gear measurement focuses on certain local points on the involute near the pitch circle of the gear, and the entire tooth profile of the gear cannot be fully measured. However, when the gear is meshing, the entire involute tooth profile works. The complete external contour shape and geometric dimensions of the gear can fully evaluate the quality and performance of the gear.

[0003] Therefore, a non-contact measuring instrument is needed for accurately and quickly measuring the external profile and size of small and medium module spur gears. Utility Model Content

[0004] The utility model aims to provide a synchronous automatic positioning spur gear visual measuring instrument, which comprises a platform, a gear center positioning platform, a gear center positioning device and a visual measuring system.

[0005] The gear center positioning platform and the visual measurement system are installed on the platform.

[0006] The gear center positioning device is fixedly mounted on the gear center positioning platform.

[0007] The gear center positioning device includes a high-precision angular indexing plate, a core shaft, a guide rail module, a guide rail tray, a fixture, a servo motor I, a clamp, a lower tray, an upper tray, a servo motor II, and a boss.

[0008] The high-precision angular indexing plate is arranged on the gear center positioning platform.

[0009] One end of the core shaft is connected with the high-precision angular indexing plate key, and the other end passes through the lower tray and is fixedly installed on the boss.

[0010] The front section of the base III of the guide rail module is fixedly connected to the guide rail tray, and the rear section is fixedly installed on the guide rail bracket.

[0011] The clamping claw is fixedly mounted above the slide block of the guide rail module;

[0012] The slider is used to drive the clamping jaws to move toward each other along the radial direction of the spur cylindrical internal gear, thereby clamping the spur cylindrical internal gear;

[0013] The guide rail bracket is fixedly mounted on the upper surface of the gear center positioning platform and is parallel to the column of the visual measurement system.

[0014] A boss is arranged on the lower tray.

[0015] A shaft sleeve is arranged on the upper tray.

[0016] The boss and the shaft sleeve are connected by bolts.

[0017] The clamping jaws are mounted on a fixture.

[0018] The servo motor I is connected to the coupling II.

[0019] The other end of the coupling II is connected to the pin.

[0020] The other end of the pin is connected to the clamping claw.

[0021] The servo motor II is connected to the high-precision angular indexing plate via a coupling III.

[0022] The visual measurement system comprises a screw module I, a column, a screw module II and a visual measurement module.

[0023] The screw module I is arranged on a platform.

[0024] The screw module I comprises a base I, an X-axis guide rail, a ball screw II, a slider I, a coupling IV, and a motor II.

[0025] The screw module II includes a base II, a Z-axis guide rail, a ball screw III, a slider II, a coupling V, and a motor III.

[0026] An X-axis guide rail is fixedly arranged on the base 1.

[0027] A slider I is provided on the X-axis guide rail.

[0028] The X-axis guide rail cooperates with the ball screw II to move in a straight line;

[0029] A slider I is arranged on the nut of the ball screw II.

[0030] The slide block 1 is fixedly provided with a column.

[0031] The column is fixedly provided with a base II in the length direction of one side close to the gear center positioning platform.

[0032] A Z-axis guide rail is fixedly arranged on the base II.

[0033] A slider II is arranged on the Z-axis guide rail.

[0034] The Z-axis guide rail cooperates with the ball screw III to move in a straight line;

[0035] A slider II is arranged on the nut of the ball screw III.

[0036] The sliding block II is fixedly provided with a visual measurement module.

[0037] Furthermore, the center line of the high-precision angular indexing plate coincides with the center line from the top surface to the bottom surface of the gear center positioning platform.

[0038] Furthermore, the axis of the core shaft coincides with the center line of the high-precision angular indexing disk.

[0039] Furthermore, the center line of the bottom surface of the base 1 and the center line of the bottom surface of the gear center positioning platform are on a straight line.

[0040] Furthermore, three positioning grooves are provided on the upper surface of the guide rail tray. The three positioning grooves have the axis as the center line and are spaced at an angle of 120°.

[0041] The positioning grooves are respectively used to fix and install the guide rail modules.

[0042] Furthermore, it also includes an LED light source.

[0043] The LED light source is arranged on the lower tray.

[0044] Furthermore, the guide rail module includes a guide rail slider, a base III, a guide rail, a ball screw I, a coupling I, and a motor I.

[0045] Through holes are provided on the side plates at both ends of the base III.

[0046] The ball screw I passes through the through hole.

[0047] One end of the ball screw I away from the visual measurement system is connected to the motor I through a coupling I.

[0048] A guide rail slider is arranged on the nut of the ball screw 1.

[0049] Furthermore, the side panels at both ends of the base 1 are provided with through holes.

[0050] The ball screw II passes through the through hole.

[0051] One end of the ball screw II away from the gear center positioning platform is connected to the motor II through a coupling IV.

[0052] Furthermore, the side panels at both ends of the base II are provided with through holes.

[0053] The ball screw III passes through the through hole.

[0054] One end of the ball screw III away from the gear center positioning platform is connected to the motor III through a coupling V.

[0055] Furthermore, the visual measurement module is a CCD camera equipped with a telecentric lens.

[0056] The technical effect of the utility model is unquestionable. The utility model can accurately and quickly locate the center of the gear, use the visual measurement system to achieve rapid photography, has a compact and simple structure, and is highly operable, and can achieve the measurement of spur cylindrical internal and external gears with medium and small modules.

[0057] The gear center positioning device of the utility model can accurately position the gear center and has a simple and compact structure and strong operability.

[0058] The visual measurement system of the utility model can effectively improve the measurement accuracy and shorten the measurement time. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 A stereoscopic view of the internal gear being clamped for the synchronous automatic positioning of the spur gear vision measuring instrument;

[0060] Figure 2 A stereoscopic view of the external gear being clamped for the synchronous automatic positioning of the spur gear vision measuring instrument;

[0061] Figure 3 It is a stereoscopic diagram of the gear center positioning device;

[0062] Figure 4 Top view of the spur gear vision measuring instrument for synchronous automatic positioning;

[0063] Figure 5 Front view of the vision measuring instrument for synchronous automatic positioning of spur gears;

[0064] Figure 6 The three-dimensional diagrams of the upper tray and the lower tray, wherein (a) is the lower tray and (b) is the upper tray;

[0065] Figure 7 It is the upper surface of the guide rail tray.

[0066] In the figure: 1- platform; 2- gear center positioning platform; 3- gear center positioning device; 4- visual measurement system; 5- high-precision angular indexing plate; 6- spindle; 7- guide rail module; 8- guide rail slider; 9- base III; 10- guide rail; 11- lead screw I; 12- coupling I; 13- motor I; 15- guide rail tray; 16- guide rail bracket; 17- tray bracket; 18- fixture; 19- pin shaft; 20- coupling II; 21- servo motor I; 22- clamp; 23- lower tray; 24- upper tray; 25- bushing; 26- bolt; 27- LED light source; 28-tested spur-tooth internal gear; 29-tested spur-tooth external gear; 30-servo motor II; 31-coupling III; 32-screw module I; 33-column; 34-screw module II; 35-visual measurement module; 36-base I; 37-X-axis guide; 38-ball screw II; 39-slider I; 40-coupling IV; 41-motor II; 42-base II; 43-Z-axis guide; 44-ball screw III; 45-slider II; 46-coupling V; 47-motor III; 48-boss. DETAILED DESCRIPTION

[0067] The present invention is further described below in conjunction with the embodiments, but it should not be understood that the above subject matter of the present invention is limited to the following embodiments. Without departing from the above technical ideas of the present invention, various substitutions and changes are made according to the common technical knowledge and conventional means in the field, which should be included in the protection scope of the present invention.

[0068] Embodiment 1:

[0069] See also Figures 1 to 7 A synchronous automatic positioning spur gear visual measuring instrument comprises a platform 1, a gear center positioning platform 2, a gear center positioning device 3 and a visual measuring system 4.

[0070] The gear center positioning platform 2 and the visual measurement system 4 are installed on the platform 1 .

[0071] The gear center positioning device 3 is fixedly mounted on the gear center positioning platform 2 .

[0072] The gear center positioning device 3 includes a high-precision angular indexing plate 5, a core shaft 6, a guide rail module 7, a guide rail tray 15, a fixture 18, a servo motor I21, a clamp 22, a lower tray 23, an upper tray 24, a servo motor II30, and a boss 48.

[0073] The high-precision angular indexing plate 5 is arranged on the gear center positioning platform 2 .

[0074] One end of the core shaft 6 is key-connected to the high-precision angular indexing plate 5 , and the other end passes through the lower tray 23 and is fixedly mounted on the boss 48 .

[0075] The front section of the base III9 of the guide rail module 7 is fixedly connected to the guide rail tray 15 , and the rear section is fixedly mounted on the guide rail bracket 16 .

[0076] The clamping jaws 22 are fixedly mounted above the slider of the guide rail module 7. The three clamping jaws are driven by the movement of the slider 8 to move toward each other along the radial direction of the spur cylindrical internal gear 28 to clamp the spur cylindrical internal gear 28.

[0077] The guide rail bracket 16 is fixedly mounted on the upper surface of the gear center positioning platform 2 and is parallel to the column 33 of the vision measurement system 4 .

[0078] A boss 48 is disposed on the lower tray 23 .

[0079] A shaft sleeve 25 is disposed on the upper tray 24 .

[0080] The boss 48 and the shaft sleeve 25 are connected by bolts 26 .

[0081] The clamping jaws 22 are mounted on the clamp 18 .

[0082] The servo motor I21 is connected to the coupling II20.

[0083] The other end of the coupling II20 is connected to the pin 19.

[0084] The other end of the pin shaft 19 is connected to the clamping claw 22 .

[0085] The servo motor II30 is connected to the high-precision angular indexing disk 5 via a coupling III31.

[0086] The visual measurement system 4 includes a screw module I32 , a column 33 , a screw module II34 and a visual measurement module 35 .

[0087] The screw module I32 is arranged on the platform 1.

[0088] The screw module I32 includes a base I36, an X-axis guide rail 37, a ball screw II38, a slider I39, a coupling IV40, and a motor II41.

[0089] The screw module II34 includes a base II42, a Z-axis guide rail 43, a ball screw III44, a slider II45, a coupling V46, and a motor III47.

[0090] An X-axis guide rail 37 is fixedly arranged on the base 136.

[0091] A slider I39 is provided on the X-axis guide rail 37.

[0092] A slider I39 is provided on the nut of the ball screw II38, and the X-axis guide rail 37 cooperates with the ball screw II38 to move in a straight line.

[0093] A column 33 is fixedly arranged on the slider 139.

[0094] The column 33 is fixedly provided with a base II42 in the length direction of one side close to the gear center positioning platform 2.

[0095] The base II42 is fixedly provided with a Z-axis guide rail 43, which cooperates with a ball screw III44 to move in a straight line.

[0096] The Z-axis guide rail 43 is provided with a slider II45.

[0097] A slider II45 is arranged on the nut of the ball screw III44.

[0098] The sliding block II45 is fixedly provided with a visual measurement module 35 .

[0099] The center line of the high-precision angular indexing plate 5 coincides with the center line from the top surface to the bottom surface of the gear center positioning platform 2 .

[0100] The axis of the mandrel 6 coincides with the center line of the high-precision angular indexing disk 5 .

[0101] The center line of the bottom surface of the base 136 and the center line of the bottom surface of the gear center positioning platform 2 are on a straight line.

[0102] The upper surface of the guide rail tray 15 is provided with three positioning grooves, which are centered on the axis and spaced at an angle of 120°.

[0103] The positioning grooves are respectively used to fix and install the guide rail modules 7.

[0104] An LED light source 27 is also included.

[0105] The LED light source 27 is arranged on the lower tray 23 .

[0106] The guide rail module 7 includes a guide rail slider 8, a base III9, a guide rail 10, a ball screw I11, a coupling I12, and a motor I13.

[0107] Through holes are provided on the side plates at both ends of the base III9.

[0108] The ball screw I11 passes through the through hole.

[0109] One end of the ball screw I11 away from the visual measurement system 4 is connected to the motor I13 via a coupling I12.

[0110] A guide rail slider 8 is arranged on the nut of the ball screw I11.

[0111] The side plates at both ends of the base 136 are provided with through holes.

[0112] The ball screw II38 passes through the through hole.

[0113] One end of the ball screw II38 away from the gear center positioning platform 2 is connected to the motor II41 through a coupling IV40.

[0114] The side panels at both ends of the base II42 are provided with through holes.

[0115] The ball screw III44 passes through the through hole.

[0116] One end of the ball screw III44 away from the gear center positioning platform 2 is connected to the motor III47 through a coupling V46.

[0117] The visual measurement module 35 is a CCD camera equipped with a telecentric lens.

[0118] Embodiment 2:

[0119] A synchronous automatic positioning spur gear visual measuring instrument comprises a platform 1, a gear center positioning platform 2, a gear center positioning device 3 and a visual measuring system 4.

[0120] The gear center positioning platform 2 and the visual measurement system 4 are installed on the platform 1 .

[0121] The gear center positioning device 3 is fixedly mounted on the gear center positioning platform 2 .

[0122] The gear center positioning device 3 includes a high-precision angular indexing plate 5, a core shaft 6, a guide rail module 7, a guide rail tray 15, a fixture 18, a servo motor I21, a clamp 22, a lower tray 23, an upper tray 24, a servo motor II30, and a boss 48.

[0123] The high-precision angular indexing plate 5 is arranged on the gear center positioning platform 2 .

[0124] One end of the core shaft 6 is key-connected to the high-precision angular indexing plate 5 , and the other end passes through the lower tray 23 and is fixedly mounted on the boss 48 .

[0125] The front section of the base III9 of the guide rail module 7 is fixedly connected to the guide rail tray 15 , and the rear section is fixedly mounted on the guide rail bracket 16 .

[0126] The clamping jaws 22 are fixedly mounted above the slider of the guide rail module 7. The three clamping jaws are driven by the movement of the slider 8 to move toward each other along the radial direction of the spur cylindrical internal gear 28 to clamp the spur cylindrical internal gear 28.

[0127] The guide rail bracket 16 is fixedly mounted on the upper surface of the gear center positioning platform 2 and is parallel to the column 33 of the vision measurement system 4 .

[0128] A boss 48 is disposed on the lower tray 23 .

[0129] A shaft sleeve 25 is disposed on the upper tray 24 .

[0130] The boss 48 and the shaft sleeve 25 are connected by bolts 26 .

[0131] The clamping jaws 22 are mounted on the clamp 18 .

[0132] The servo motor I21 is connected to the coupling II20.

[0133] The other end of the coupling II20 is connected to the pin 19.

[0134] The other end of the pin shaft 19 is connected to the clamping claw 22 .

[0135] The servo motor II30 is connected to the high-precision angular indexing disk 5 via a coupling III31.

[0136] The visual measurement system 4 includes a screw module I32 , a column 33 , a screw module II34 and a visual measurement module 35 .

[0137] The screw module I32 is arranged on the platform 1.

[0138] The screw module I32 includes a base I36, an X-axis guide rail 37, a ball screw II38, a slider I39, a coupling IV40, and a motor II41.

[0139] The screw module II34 includes a base II42, a Z-axis guide rail 43, a ball screw III44, a slider II45, a coupling V46, and a motor III47.

[0140] An X-axis guide rail 37 is fixedly arranged on the base 136.

[0141] A slider I39 is provided on the X-axis guide rail 37.

[0142] A slider I39 is provided on the nut of the ball screw II38, and the X-axis guide rail 37 cooperates with the ball screw II38 to move in a straight line.

[0143] A column 33 is fixedly arranged on the slider 139.

[0144] The column 33 is fixedly provided with a base II42 in the length direction of one side close to the gear center positioning platform 2.

[0145] A Z-axis guide rail 43 is fixedly arranged on the base II42.

[0146] The Z-axis guide rail 43 is provided with a slider II45, and the Z-axis guide rail 43 cooperates with the ball screw III44 to move in a straight line.

[0147] A slider II45 is arranged on the nut of the ball screw III44.

[0148] The sliding block II45 is fixedly provided with a visual measurement module 35 .

[0149] Embodiment 3:

[0150] A synchronous automatic positioning spur gear visual measuring instrument, the technical content of which is the same as that of Example 2, further, the center line of the high-precision angular dividing plate 5 coincides with the center line from the top surface to the bottom surface of the gear center positioning platform 2.

[0151] Embodiment 4:

[0152] A synchronous automatic positioning spur gear visual measuring instrument, the technical content of which is the same as any one of Examples 2-3, and further, the axis of the core shaft 6 coincides with the center line of the high-precision angular dividing plate 5.

[0153] Embodiment 5:

[0154] A synchronous automatic positioning spur gear visual measuring instrument, the technical content of which is the same as any one of embodiments 2-4, further, the center line of the bottom surface of the base 136 and the center line of the bottom surface of the gear center positioning platform 2 are on a straight line.

[0155] Embodiment 6:

[0156] A synchronous automatic positioning spur gear visual measuring instrument, the technical content of which is the same as any one of Examples 2-5, further, three positioning grooves are opened on the upper surface of the guide rail tray 15, and the three positioning grooves have the axis as the center line and the interval angle is 120°.

[0157] The positioning grooves are respectively used to fix and install the guide rail modules 7.

[0158] Embodiment 7:

[0159] A synchronous automatic positioning spur gear visual measuring instrument, the technical content of which is the same as any one of Examples 2-6, and further includes an LED light source 27.

[0160] The LED light source 27 is arranged on the lower tray 23 .

[0161] Embodiment 8:

[0162] A synchronous automatic positioning spur gear visual measuring instrument, the technical content of which is the same as any one of embodiments 2-7, and further, the guide rail module 7 includes a guide rail slider 8, a base III9, a guide rail 10, a ball screw I11, a coupling I12, and a motor I13.

[0163] Through holes are provided on the side plates at both ends of the base III9.

[0164] The ball screw I11 passes through the through hole.

[0165] One end of the ball screw I11 away from the visual measurement system 4 is connected to the motor I13 via a coupling I12.

[0166] A guide rail slider 8 is arranged on the nut of the ball screw I11.

[0167] Embodiment 9:

[0168] A synchronous automatic positioning spur gear visual measuring instrument, the technical content of which is the same as any one of Examples 2-8, and further, through holes are provided on the side panels at both ends of the base I36.

[0169] The ball screw II38 passes through the through hole.

[0170] One end of the ball screw II38 away from the gear center positioning platform 2 is connected to the motor II41 through a coupling IV40.

[0171] Embodiment 10:

[0172] A synchronous automatic positioning spur gear visual measuring instrument, the technical content of which is the same as any one of embodiments 2-9, and further, through holes are provided on the side panels at both ends of the base II42.

[0173] The ball screw III44 passes through the through hole.

[0174] One end of the ball screw III44 away from the gear center positioning platform 2 is connected to the motor III47 through a coupling V46.

[0175] Embodiment 11:

[0176] A synchronous automatic positioning spur gear visual measuring instrument, the technical content of which is the same as any one of embodiments 2-10, and further, the visual measuring module 35 is a CCD camera equipped with a telecentric lens.

[0177] Embodiment 12:

[0178] A synchronous automatic positioning spur gear visual measuring instrument, comprising a marble platform 1, a gear center positioning platform 2, a gear center positioning device 3 and the visual measuring system 4;

[0179] The gear center positioning platform 2 and the visual measurement system 4 are fixedly installed along the length direction of the marble platform 1 ; the gear center positioning device 3 is fixedly installed on the gear center positioning platform 2 .

[0180] The gear center positioning device 3 includes a high-precision angular indexing plate 5, a core shaft 6, a guide rail slider 8, a screw rod I11, a motor I13, a guide rail tray 15, a fixture 18, a servo motor I21, a clamp 22, a lower tray 23, an upper tray 24, an LED light source 27, a servo motor II30, and a boss 48;

[0181] The high-precision angular indexing plate 5 is arranged on the gear center positioning platform 2; the center line of the high-precision angular indexing plate 5 coincides with the center line of the top surface and the bottom surface of the gear center positioning platform 2;

[0182] One end of the mandrel 6 is connected to the high-precision angular indexing plate 5 by a key; the axis of the mandrel 6 coincides with the center line of the high-precision angular indexing plate 5; the other end of the mandrel 6 passes through the lower tray 23 and is fixedly mounted on the boss 48;

[0183] The guide rail module 7 is arranged on the guide rail tray 15; the guide rail module 7 includes a guide rail slider 8, a base III9, a guide rail 10, a ball screw I11, a coupling I12, and a motor I13;

[0184] With the axis of the mandrel 6 as the center line, three positioning grooves are milled on the upper surface of the guide rail tray 15 at an interval of 120°, and three identical guide rail modules 7 are fixedly installed and evenly arranged at equal angles on the circumference;

[0185] The front section of the base III9 of the guide rail module 7 is fixedly connected to the upper surface of the positioning groove of the guide rail tray 15, and the rear section is fixedly mounted on the upper surface of the guide rail bracket 16. The guide rail bracket 16 is fixedly mounted on the upper surface of the gear center positioning platform 2 and is parallel to the column 33 of the visual measurement system 4;

[0186] The lower tray 23 is provided with a boss 48; the upper tray 24 is provided with a sleeve 25; the boss 48 and the sleeve 25 are connected by bolts 26; the lower tray 23 is provided with an LED light source 27;

[0187] The visual measurement system 4 includes a screw module I32, a column 33, a screw module II34 and the visual measurement module 35;

[0188] The screw module I32 is arranged on the marble platform 1; the screw module I32 includes a base I36, an X-axis guide rail 37, a ball screw II38, a slider I39, a coupling IV40, and a motor II41; the center line of the bottom surface of the base I36 and the center line of the bottom surface of the gear center positioning platform 2 are on a straight line.

[0189] The screw module II34 includes a base II42, a Z-axis guide rail 43, a ball screw III44, a slider II45, a coupling V46, and a motor III47;

[0190] The X-axis guide rail 37 is fixedly arranged on the base I36; the slider I39 is arranged on the X-axis guide rail 37; the column 33 is fixedly arranged on the slider I39; the base II42 is fixedly arranged on the column 33 in the length direction of a side close to the gear center positioning platform 2; the Z-axis guide rail 43 is fixedly arranged on the base II42; the slider II45 is arranged on the Z-axis guide rail 43; the visual measurement module 35 is fixedly arranged on the slider II45.

[0191] There are through holes on the side panels at both ends of the base III9; the ball screw I11 passes through the through holes; the end of the ball screw I11 away from the visual measurement system 4 is connected to the motor I13 through a coupling I12; the guide rail slider 8 is provided on the nut of the ball screw I11.

[0192] The clamping jaw 22 is mounted on the fixture 18 via a connecting rod; the servo motor I21 is connected to the coupling II20; the other end of the coupling II20 is connected to the pin 19; the other end of the pin 19 is fixedly connected to the clamping jaw 22.

[0193] The servo motor II30 is connected to the high-precision angular indexing disk 5 via a coupling III31.

[0194] There are through holes on the side panels at both ends of the base I36; the ball screw II38 passes through the through holes; the end of the ball screw II38 away from the gear center positioning platform 2 is connected to the motor II41 through a coupling IV40; the slider I39 is provided on the nut of the ball screw II38.

[0195] There are through holes on the side panels at both ends of the base II42; the ball screw III44 passes through the through holes; the end of the ball screw III44 away from the gear center positioning platform 2 is connected to the motor III47 through a coupling V46; the slider II45 is provided on the nut of the ball screw III44.

[0196] The visual measurement module 35 is a CCD camera equipped with a telecentric lens.

[0197] Embodiment 13:

[0198] A synchronous automatic positioning spur gear visual measuring instrument, the technical content is the same as any one of embodiments 1-12, further, see Figure 1 , place the spur gear 28 to be measured on the upper tray 24, start the motor I13 connected to the screw rod I11, give the three motors I13 the same signal, and make the three sliders move to the positioning center at the same time.

[0199] When the motor I16 rotates forward, the clamp 18 and the jaws 22 are away from the positioning center, and the manipulator takes out the spur cylindrical internal gear 28 to be measured; when the motor I16 rotates reversely, the clamp 18 and the jaws 22 are close to the positioning center, and the outer ring of the spur cylindrical internal gear 28 to be measured is clamped and centered.

[0200] Embodiment 14:

[0201] A synchronous automatic positioning spur gear visual measuring instrument, the technical content is the same as any one of embodiments 1-13, further, see Figure 2 , place the spur gear 29 to be measured on the upper tray 24, start the motor I connected to the screw rod I11, give the same signal to the three motors I13, so that the three sliders move to the positioning center at the same time.

[0202] When the spur cylindrical external gear 29 to be measured is removed, the servo motor I21 is started to rotate the clamp 22 upward 180° to make it perpendicular to the horizontal plane, and then the motor I16 on the ball screw I11 is rotated forward to move the fixture 18 away from the positioning center, thereby removing the spur cylindrical external gear 29 to be measured; when the motor I16 is reversed, the fixture 18 and the clamp 22 are close to the positioning center to clamp and center the inner ring of the spur cylindrical external gear 29 to be measured.

[0203] Embodiment 15:

[0204] A synchronous automatic positioning spur gear visual measuring instrument, the technical content is the same as any one of embodiments 1-14, further, the gear to be measured is placed on the upper tray 24, the motor II41 connected to the ball screw II38 and the motor III47 connected to the ball screw III44 are started, the slider I39 moves in the horizontal direction and the slider II45 moves in the vertical direction, so as to adjust the position of the CCD camera until the telecentric lens, the gear to be measured and the LED light source 27 are adjusted to the best shooting position. After focusing, the servo motor II30 is started to drive the high-precision angular indexing plate 5 and the mandrel 6 to rotate, and the mandrel 6 then drives the upper tray 24 and the lower tray 23 to rotate. When the high-precision angular indexing plate rotates 360°, the visual system takes a picture of the gear to be measured and sends the image to the computer. Through image acquisition, the electrical signal is converted into a digital signal, and the image of the gear to be measured is subjected to Gaussian filtering and binarization processing to segment the image. The edge detection algorithm is used to locate the image of the gear to be measured, and measurement and calculation are performed to obtain measurement parameters such as the gear tooth addendum circle radius, tooth root circle radius, pitch circle radius, and gear tooth number. The measurement has high accuracy and fast speed, and can achieve non-contact, non-destructive and rapid detection of gears.

Claims

1. A synchronous automatic positioning spur gear visual measuring instrument, characterized in that: It comprises a platform (1), a gear center positioning platform (2), a gear center positioning device (3) and a visual measurement system (4); The gear center positioning platform (2) and the visual measurement system (4) are installed on the platform (1); The gear center positioning device (3) is fixedly mounted on the gear center positioning platform (2); The gear center positioning device (3) comprises a high-precision angular indexing plate (5), a core shaft (6), a guide rail module (7), a guide rail tray (15), a fixture (18), a servo motor I (21), a clamp (22), a lower tray (23), an upper tray (24), a servo motor II (30), and a boss (48); The high-precision angular indexing plate (5) is arranged on the gear center positioning platform (2); One end of the mandrel (6) is key-connected to the high-precision angular indexing plate (5), and the other end passes through the lower tray (23) and is fixedly mounted on the boss (48); The front section of the base III (9) of the guide rail module (7) is fixedly connected to the guide rail tray (15), and the rear section is fixedly mounted on the guide rail bracket (16); The clamping claw (22) is fixedly mounted above the slider of the guide rail module (7); The slider (8) is used to drive the clamping jaws (22) to move toward each other along the radial direction of the spur-tooth cylindrical internal gear (28), thereby clamping the spur-tooth cylindrical internal gear (28); The guide rail bracket (16) is fixedly mounted on the upper surface of the gear center positioning platform (2) and is parallel to the column (33) of the visual measurement system (4); The lower tray (23) is provided with a boss (48); The upper tray (24) is provided with a shaft sleeve (25); The boss (48) and the shaft sleeve (25) are connected by bolts (26); The clamping jaw (22) is mounted on the clamp (18); The servo motor I (21) is connected to the coupling II (20); The other end of the coupling II (20) is connected to the pin (19); The other end of the pin shaft (19) is connected to the clamping claw (22); The servo motor II (30) is connected to the high-precision angular indexing plate (5) via a coupling III (31); The visual measurement system (4) comprises a screw module I (32), a column (33), a screw module II (34) and a visual measurement module (35); The screw module I (32) is arranged on the platform (1); The screw module I (32) includes a base I (36), an X-axis guide rail (37), a ball screw II (38), a slider I (39), a coupling IV (40), and a motor II (41); The screw module II (34) includes a base II (42), a Z-axis guide rail (43), a ball screw III (44), a slider II (45), a coupling V (46), and a motor III (47); An X-axis guide rail (37) is fixedly arranged on the base I (36); A slider I (39) is provided on the X-axis guide rail (37); The X-axis guide rail (37) cooperates with the ball screw II (38) to move along a straight line; A slider I (39) is provided on the nut of the ball screw II (38); The slider 1 (39) is fixedly provided with a column (33); The column (33) is fixedly provided with a base II (42) in the length direction on one side close to the gear center positioning platform (2); A Z-axis guide rail (43) is fixedly arranged on the base II (42); The Z-axis guide rail (43) is provided with a slider II (45); The Z-axis guide rail (43) cooperates with the ball screw III (44) to move along a straight line; A slider II (45) is arranged on the nut of the ball screw III (44); The sliding block II (45) is fixedly provided with a visual measurement module (35).

2. The synchronous automatic positioning spur gear visual measuring instrument according to claim 1, characterized in that: The center line of the high-precision angular indexing plate (5) coincides with the center line from the top surface to the bottom surface of the gear center positioning platform (2).

3. The synchronous automatic positioning spur gear visual measuring instrument according to claim 1, characterized in that: The axis of the core shaft (6) coincides with the center line of the high-precision angular indexing disk (5).

4. The synchronous automatic positioning spur gear visual measuring instrument according to claim 1, characterized in that: The center line of the bottom surface of the base 1 (36) and the center line of the bottom surface of the gear center positioning platform (2) are on a straight line.

5. The synchronous automatic positioning spur gear visual measuring instrument according to claim 1, characterized in that: The upper surface of the guide rail tray (15) is provided with three positioning grooves, the three positioning grooves have the axis as the center line and are spaced at an angle of 120°; The positioning grooves are respectively used to fix and install guide rail modules (7).

6. The synchronous automatic positioning spur gear visual measuring instrument according to claim 1, characterized in that: Also includes an LED light source (27); The LED light source (27) is arranged on the lower tray (23).

7. The synchronous automatic positioning spur gear visual measuring instrument according to claim 1, characterized in that: The guide rail module (7) comprises a guide rail slider (8), a base III (9), a guide rail (10), a ball screw I (11), a coupling I (12), and a motor I (13); The side plates at both ends of the base III (9) are provided with through holes; The ball screw I (11) passes through the through hole; One end of the ball screw I (11) away from the visual measurement system (4) is connected to the motor I (13) via a coupling I (12); A guide rail slider (8) is arranged on the nut of the ball screw rod I (11).

8. The synchronous automatic positioning spur gear visual measuring instrument according to claim 1, characterized in that: The side plates at both ends of the base 1 (36) are provided with through holes; The ball screw II (38) passes through the through hole; One end of the ball screw II (38) away from the gear center positioning platform (2) is connected to the motor II (41) via a coupling IV (40).

9. The synchronous automatic positioning spur gear visual measuring instrument according to claim 1, characterized in that: The side plates at both ends of the base II (42) are provided with through holes; The ball screw III (44) passes through the through hole; One end of the ball screw III (44) away from the gear center positioning platform (2) is connected to the motor III (47) via a coupling V (46).

10. The synchronous automatic positioning spur gear visual measuring instrument according to claim 1, characterized in that: The visual measurement module (35) is a CCD camera equipped with a telecentric lens.

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