A single-axis indexing mechanism with end gear locking

Abstract

A single-axis rotation mechanism with end gear disk locking comprises a base, a shaft system assembly is installed in the base, a load table is installed on the upper end of the shaft system assembly, a locking assembly is installed on the lower end of the shaft system assembly, a bottom cover plate buckled on the bottom of the base is provided at the lower end of the locking assembly, a limiting mechanism installed on the base is provided on one side of the load table, the limiting mechanism comprises a limiting slide, a limiting slider and a limiting bumper, the limiting slide is fixed on the base, the limiting slider is embedded in the limiting slide, and the limiting slider can slide in the limiting slide; the limiting bumper is fixedly installed on the side of the load table, and can contact the limiting slider during the rotation of the load table. The present invention has the characteristics of high positioning accuracy, good reliability and repeatability, strong vibration and impact resistance, compact structure and small size.

Description

Technical Field

[0001] The invention relates to a single-axis rotation mechanism with end toothed disc locking. Background Art

[0002] The single-axis indexing mechanism is a single-axis platform multifunctional testing equipment, including a base and a rotating table, which is rotatably mounted on the base. It has functions such as test position and speed, and can meet the functional test and experiment of inertial systems and inertial components. However, the existing single-axis indexing mechanism has problems such as low positioning accuracy, poor reliability and repeatability, and poor vibration and shock resistance. Summary of the invention

[0003] The purpose of the present invention is to provide a single-axis indexing mechanism with end gear locking to solve the problems in the above-mentioned background technology, which has the characteristics of high positioning accuracy, good reliability and repeatability, strong resistance to vibration and impact, compact structure and small size.

[0004] The technical solution adopted to achieve the above-mentioned purpose is a single-axis rotation mechanism with end gear locking, comprising a base, a shaft system assembly is installed in the base, a load table is installed on the upper end of the shaft system assembly, a locking assembly is installed on the lower end of the shaft system assembly, and a bottom cover plate is provided at the lower end of the locking assembly and is buckled on the bottom of the base; a limiting mechanism installed on the base is provided on one side of the load table; the limiting mechanism comprises a limiting groove, a limiting slider and a limiting impact block, the limiting groove is fixed on the base, the limiting slider is embedded in the limiting groove, and the limiting slider can slide in the limiting groove; the limiting impact block is fixedly installed on the side of the load table and can contact the limiting slider during the rotation of the load table.

[0005] Further, the shaft system assembly includes a slewing bearing, the outer ring of the slewing bearing is fixedly installed on the base, the upper end of the inner ring of the slewing bearing is fixedly connected to the load table, and a main shaft is installed on the inner side of the inner ring of the slewing bearing. The main shaft is equipped with a motor rotor, a resolver rotor, and a movable gear plate mounting seat from top to bottom. The motor rotor is equipped with a motor stator fixedly installed in the motor stator seat, and the motor stator seat is fixedly installed on the base. The resolver rotor is equipped with a resolver stator fixedly installed in the resolver stator seat via a resolver stator pressure plate. The resolver stator seat is fixedly installed on the motor stator seat, and the resolver stator pressure plate is fixedly installed on the lower end of the resolver stator seat.

[0006] Further, the locking assembly includes a locking seat, which is fixedly installed with the base, a sliding bead seat is fixedly installed on the upper inner end of the locking seat, a sliding bead retainer is provided on the inner side of the sliding bead seat, a sliding bead is installed in the sliding bead retainer, a fixed toothed plate is provided on the inner side of the sliding bead retainer, a movable toothed plate is provided above the fixed toothed plate, a guide seat fixed to the locking seat is provided at the lower end of the sliding bead seat, a guide bead retainer is provided on the inner side of the guide seat, a guide bead is installed in the guide bead retainer, a guide pin is provided on the inner side of the guide pin, and the lower end of the guide pin is fixed to the locking seat through a threaded structure, the lower end of the fixed toothed plate is connected to a worm wheel via a trapezoidal thread pair, and the worm wheel is connected to the worm wheel via a support A bearing bead retainer is fixedly installed in the locking seat, a supporting bead is installed in the supporting bead retainer, a supporting bead pressure cover fixed on the locking seat is provided at the lower end of the worm wheel, a worm is provided on one side of the worm wheel, the worm is fixedly installed in the locking seat via a worm bead retainer, a worm supporting bead is installed in the worm supporting bead retainer, a bead retaining ring is provided between the worm supporting bead retainer and the worm, one end of the worm is connected to a servo motor, the servo motor is fixed to the locking seat via a servo motor seat, an infrared mounting seat is installed in the locking seat, and an infrared probe is installed in the infrared mounting seat; the upper end of the movable gear disc is fixedly connected to the movable gear disc mounting seat, and the movable gear disc and the fixed gear disc are meshed with each other.

[0007] Beneficial Effects

[0008] Compared with the prior art, the present invention has the following advantages.

[0009] The advantage of the present invention is that it solves the problems of low positioning accuracy, poor reliability and repeatability, and poor vibration and impact resistance of traditional single-axis indexing mechanisms. It has the characteristics of high positioning accuracy, good reliability and repeatability, strong vibration and impact resistance, and a compact structure and small size. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0011] Figure 1 It is a schematic cross-sectional view of the structure of the present invention;

[0012] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0013] Figure 3 It is a schematic diagram of the structure of the limiting mechanism in the present invention;

[0014] Figure 4 is a cross-sectional schematic diagram of the shafting assembly in the present invention;

[0015] Figure 5 is a schematic longitudinal cross-sectional view of the locking assembly in the present invention;

[0016] Figure 6is a schematic cross-sectional view of the locking assembly in the present invention;

[0017] As shown in the figure: 1-base, 2-limiting mechanism, 201-limiting slide, 202-limiting slider, 203-limiting collision block, 3-load table, 4-axis system assembly, 401-turntable bearing, 402-spindle, 403-motor rotor, 404-motor stator, 405-motor stator seat, 406-resolver rotor, 407-resolver stator, 408-resolver stator seat, 409-resolver stator pressure plate, 410-moving gear disk mounting seat, 5-locking assembly, 501-locking seat, 502-sliding bead seat, 503-sliding bead retainer , 504-sliding beads, 505-fixed gear disc, 506-moving gear disc, 507-guide seat, 508-guide bead retainer, 509-guide bead, 510-guide pin, 511-supporting bead retainer, 512-supporting bead pressure cover, 513-supporting bead, 514-worm wheel, 515-worm, 516-servo motor, 517-servo motor seat, 518-bead retaining ring, 519-infrared mounting seat, 520-infrared probe, 521-worm supporting bead retainer, 522-worm supporting bead, 6 bottom cover plates. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with embodiments and drawings.

[0019] A single-axis indexing mechanism with end gear locking comprises a base 1, such as Figure 1-Figure 6 As shown, a shaft assembly 4 is installed in the base 1, a load table 3 is installed on the upper end of the shaft assembly 4, a locking assembly 5 is installed on the lower end of the shaft assembly 4, and a bottom cover plate 6 is provided at the lower end of the locking assembly 5, which is buckled on the bottom of the base 1. A limiting mechanism 2 installed on the base 1 is provided on one side of the load table 3; the limiting mechanism 2 includes a limiting slide 201, a limiting slider 202 and a limiting bumper 203, the limiting slide 201 is fixed on the base 1, the limiting slider 202 is embedded in the limiting slide 201, and the limiting slider 202 can slide in the limiting slide 201; the limiting bumper 203 is fixedly installed on the side of the load table 3, and can contact the limiting slider 202 during the rotation of the load table 3.

[0020] The shaft system component 4 includes a slewing bearing 401, the outer ring of the slewing bearing 401 is fixedly installed on the base 1, the upper end of the inner ring of the slewing bearing 401 is fixedly connected to the load table 3, and a main shaft 402 is installed on the inner side of the inner ring of the slewing bearing 401. The main shaft 402 is sequentially mounted with a motor rotor 403, a revolving rotor 406, and a movable gear plate mounting seat 410 from top to bottom. The motor rotor 403 is mounted with a motor stator 404 fixedly installed in a motor stator seat 405, and the motor stator seat 405 is fixedly installed on the base 1. The revolving rotor 406 is mounted with a revolving stator 407 fixedly installed in a revolving stator seat 408 via a revolving stator pressure plate 409. The revolving stator seat 408 is fixedly installed on the motor stator seat 405, and the revolving stator pressure plate 409 is fixedly installed at the lower end of the revolving stator seat 408.

[0021] The locking assembly 5 includes a locking seat 501, which is fixedly installed with the base 1, a sliding bead seat 502 is fixedly installed on the upper inner end of the locking seat 501, a sliding bead holder 503 is provided on the inner side of the sliding bead seat 502, a sliding bead holder 503 is installed in the sliding bead holder 503, a sliding bead 504 is installed in the sliding bead holder 503, a fixed tooth plate 505 is provided on the inner side of the sliding bead holder 503, a movable tooth plate 506 is provided above the fixed tooth plate 505, and a sliding bead seat 503 is provided at the lower end. A guide seat 507 is provided which is fixed on the locking seat 501. A guide bead holder 508 is provided inside the guide seat 507. A guide bead 509 is installed in the guide bead holder 508. A guide pin 510 is provided inside the guide bead holder 508. The lower end of the guide pin 510 is fixed to the locking seat 501 through a threaded structure. The lower end of the fixed tooth plate 505 is connected to a worm gear 514 through a trapezoidal thread pair. The worm gear 514 is connected to the guide bead holder 508 through a support bead holder 509. 11 is fixedly installed in the locking seat 501, and a supporting bead 513 is installed in the supporting bead retaining frame 511. The lower end of the worm wheel 514 is provided with a supporting bead pressure cover 512 fixed on the locking seat 501. A worm 515 is provided on one side of the worm wheel 514. The worm 515 is fixedly installed in the locking seat 501 through a worm bead retaining frame 521. A worm supporting bead 522 is installed in the worm supporting bead retaining frame 521. The worm supporting bead retaining frame 521 is provided with a worm supporting bead 522. A bead retaining ring 518 is provided between the worm 514 and the worm 514. A servo motor 516 is connected to one end of the worm 514. The servo motor 516 is fixed to the locking seat 501 via a servo motor seat 517. An infrared mounting seat 519 is installed on the locking seat 501. An infrared probe 520 is installed in the infrared mounting seat 519. The upper end of the movable gear plate 506 is fixedly connected to the movable gear plate mounting seat 410, and the movable gear plate 506 and the fixed gear plate 505 are meshed with each other.

[0022] The working principle of the present invention is that, in the calibration state, the servo motor 516 drives the worm 515 and the worm wheel 514 to rotate, and the upper end of the worm wheel 514 is connected to the fixed toothed disk 505 by a trapezoidal thread pair. The rotation of the worm wheel 514 drives the fixed toothed disk 505 to move downward, so that the fixed toothed disk 505 and the movable toothed disk 506 are disengaged. At this time, the DC torque motor composed of the motor stator 404 and the motor rotor 403 can drive the shaft system component 4 to rotate, and the angle measurement feedback element composed of the resolver stator 407 and the resolver rotor 406 feeds back the rotation angle signal, controls the rotation position and speed, and realizes the calibration of the inertial group; after the calibration is completed, the servo motor 516 drives the worm 515 and the worm wheel 514 to rotate, and the worm wheel 514 drives the fixed toothed disk 505 to move upward, so that the fixed toothed disk 505 and the movable toothed disk 506 are closely engaged, ensuring reliable locking in the non-calibration state.

[0023] In a specific implementation of the present invention, the shaft assembly 4 is installed in the base 1. The shaft assembly 4 has a driving function and an angle measurement function. The shaft assembly 4 can realize the rotation of the inertial group in a calibrated state. The locking assembly 5 is installed at the lower end of the shaft assembly 4. The locking assembly 5 adopts the locking method of the end gear disk. The locking assembly 5 can realize reliable locking of the shaft system in a non-calibrated state, meeting the environmental requirements during transportation and flight.

[0024] The limiting mechanism 2 is used to limit the rotation of the load table 3 within the range of -185° to +185° to prevent the equipment from running away and causing the cable to be twisted. The limiting mechanism 2 includes a limiting slide 201, a limiting slider 202, and a limiting bumper 203. The limiting slide 201 is fixed to the base 1 by screws, the limiting slider 202 is embedded in the limiting slide 201 and can slide in the limiting slide 201, and the limiting bumper 203 is installed on the side of the load table 3 by screws.

[0025] The shaft assembly 4 is used to drive the single-axis table rotation and angle measurement feedback to achieve the rotation of the inertial group in the calibration state. The shaft assembly 4 includes a turntable bearing 401, a main shaft 402, a motor rotor 403, a motor stator 404, a motor stator seat 405, a resolver rotor 406, a resolver stator 407, a resolver stator seat 408, a resolver stator pressure plate 409, and a movable gear plate mounting seat 410. The outer ring of the turntable bearing 401 is mounted on the base 1 by screws, and the main shaft 402 is mounted on the inner ring of the turntable bearing 401 by screws. The motor rotor 403, the resolver rotor 406, the movable gear plate 410 are mounted on the base 1 by screws. The disk mounting seat 410 is mounted on the main shaft 402 from top to bottom by screws, the motor stator 404 is mounted on the motor stator seat 405, the motor stator seat 405 is fixed to the base 1 by screws, the resolver stator 407 is mounted on the resolver stator seat 408, the resolver stator seat 408 is mounted on the motor stator seat 405 by screws, and the resolver stator pressure plate 409 is fixed to the resolver stator seat 408 by screws.

[0026] The locking assembly 5 adopts the locking method of the end gear plate, which can realize the reliable locking of the shaft system in the non-calibrated state and meet the environmental requirements during transportation and flight. The locking assembly 5 includes a locking seat 501, a sliding bead seat 502, a sliding bead retainer 503, a sliding bead 504, a fixed gear plate 505, a movable gear plate 506, a guide seat 507, a guide bead retainer 508, a guide bead 509, a guide pin 510, a supporting bead retainer 511, a supporting bead pressure cover 512, a supporting bead 513, a worm wheel 514, a worm 515, a servo motor 516, a servo motor seat 517, a bead retainer ring 518, an infrared mounting seat 519, and an infrared probe 520. The locking seat 501 is connected to the infrared sensor 520. The screws are fixed to the base 1, the sliding bead seat 502 is fixed to the locking seat 501 by screws, the sliding bead holder 503 is placed on the inner side of the sliding bead seat 502, the sliding bead 504 is placed in the sliding bead holder 503, the fixed tooth plate 505 is placed on the inner side of the sliding bead holder 503, the movable tooth plate 506 is placed above the fixed tooth plate 505, the guide seat 507 is fixed to the locking seat 501 by screws, and the guide bead holder 508 is placed on the guide seat 507 The inner side of the guide bead 509 is placed in the guide bead holder 508, the guide pin 510 is placed inside the guide bead holder 508 and is fixed to the locking seat 501 through the thread at the end of the guide pin 510, the supporting bead holder 511 is installed on the locking seat 501, the supporting bead 513 is placed in the supporting bead holder 511, the supporting bead pressure cover 512 is placed at the lower end of the supporting bead holder 511 and is fixed to the locking seat 501 through screws, and the worm gear 514 , the worm 515 is placed in the locking seat 501, the worm wheel 514 and the worm 515 are respectively supported and fixed by two groups of supporting structures composed of dense beads and dense bead retaining frames, the servo motor 516 is installed on the servo motor seat 517 by screws, the servo motor seat 517 is installed on the locking seat 501, the output end of the servo motor 516 is inserted into the groove at one end of the worm 515, the infrared mounting seat 519 is installed on the locking seat 501, and the infrared probe 520 is placed in the infrared mounting seat 519.

[0027] In the present invention, the shaft assembly 4 has a driving function and an angle measuring function. The shaft assembly 4 can realize the rotation of the inertial group in a calibrated state. The locking assembly 5 is installed at the lower end of the shaft assembly 4. The locking assembly 5 adopts the locking method of the end gear disk. The locking assembly 5 can realize reliable locking of the shaft system in a non-calibrated state, meeting the environmental requirements during transportation and flight; it has the characteristics of high positioning accuracy, good reliability and repeatability, strong resistance to vibration and impact, compact structure and small size.

Claims

1. A single-axis indexing mechanism with end gear locking, comprising a base (1), characterized in that: A shaft assembly (4) is installed in the base (1); a load table (3) is installed on the upper end of the shaft assembly (4); a locking assembly (5) is installed on the lower end of the shaft assembly (4); a bottom cover plate (6) is provided at the lower end of the locking assembly (5) and is buckled onto the bottom of the base (1); a limiting mechanism (2) is provided on one side of the load table (3); the limiting mechanism (2) comprises a limiting slide groove (201), a limiting slider (202) and The limiting collision block (203) is fixed on the base (1), the limiting slide groove (201) is fixed on the base (1), the limiting slider (202) is embedded in the limiting slide groove (201), and the limiting slider (202) can slide in the limiting slide groove (201); the limiting collision block (203) is fixedly installed on the side of the load table (3) and can contact the limiting slider (202) during the rotation of the load table (3); the shaft system component (4) includes a turntable bearing (40 1), the outer ring of the turntable bearing (401) is fixedly installed on the base (1), the upper end of the inner ring of the turntable bearing (401) is fixedly connected to the load table (3), the inner side of the inner ring of the turntable bearing (401) is installed with a main shaft (402), the main shaft (402) is sequentially mounted with a motor rotor (403), a rotating rotor (406), and a movable gear plate mounting seat (410) from top to bottom, and the motor rotor (403) is mounted with a motor fixedly installed on the motor A motor stator (404) is inside a stator seat (405), the motor stator seat (405) is fixedly mounted on the base (1), a resolver stator (407) is mounted on the resolver rotor (406) and is fixedly mounted inside the resolver stator seat (408) via a resolver stator pressure plate (409), the resolver stator seat (408) is fixedly mounted on the motor stator seat (405), and the resolver stator pressure plate (409) is fixedly mounted on the lower end of the resolver stator seat (408);The locking assembly (5) comprises a locking seat (501), the locking seat (501) being fixedly mounted on the base (1), a sliding bead seat (502) being fixedly mounted on the inner upper end of the locking seat (501), a sliding bead retaining frame (503) being provided on the inner side of the sliding bead seat (502), a sliding bead (504) being mounted in the sliding bead retaining frame (503), a fixed toothed disc (505) being provided on the inner side of the sliding bead retaining frame (503), a movable toothed disc (506) being provided above the fixed toothed disc (505), and a movable toothed disc (506) being provided below the sliding bead seat (502). A guide seat (507) fixed on the locking seat (501) is provided at the end thereof, a guide bead holder (508) is provided on the inner side of the guide seat (507), a guide bead (509) is installed in the guide bead holder (508), a guide pin (510) is provided on the inner side of the guide bead holder (508), the lower end of the guide pin (510) is fixed on the locking seat (501) through a threaded structure, the lower end of the fixed toothed disc (505) is connected to a worm gear (514) through a trapezoidal thread pair, and the worm gear (514) is connected to the support bead holder (51 1) is fixedly installed in a locking seat (501), a supporting bead (513) is installed in a supporting bead retaining frame (511), a supporting bead pressure cover (512) fixed on the locking seat (501) is provided at the lower end of the worm wheel (514), a worm (515) is provided on one side of the worm wheel (514), the worm (515) is fixedly installed in the locking seat (501) via a worm bead retaining frame (521), a worm supporting bead (522) is installed in the worm supporting bead retaining frame (521), and the worm supporting bead retaining frame (521) A bead retaining ring (518) is provided between the worm (515), one end of the worm (514) is connected to a servo motor (516), the servo motor (516) is fixed to a locking seat (501) via a servo motor seat (517), an infrared mounting seat (519) is installed on the locking seat (501), and an infrared probe (520) is installed in the infrared mounting seat (519); the upper end of the movable toothed disc (506) is fixedly connected to the movable toothed disc mounting seat (410), and the movable toothed disc (506) and the fixed toothed disc (505) are meshed with each other. ;

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