Device and method for realizing installation and calibration of gear disc of indexing mechanism

Abstract

The present invention discloses a device and method for realizing installation and calibration of a gear disc of an indexing mechanism, and relates to the technical field of installation and calibration of a indexing mechanism, comprising a workbench and an upper gear disc, wherein a parallel guide rail is fixedly mounted on the workbench by a screw, and a base is mounted on the workbench, wherein a surface A on the base contacts the side surface of the parallel guide rail, a center hole is provided at the axis center of the base, a core shaft is detachably mounted at the center hole, a lower gear disc is coaxially mounted at the center hole through the core shaft, an F surface is provided on the circumference of the lower gear disc, an upper gear disc is meshedly mounted on the lower gear disc, a calibration block and a movable groove are provided on the upper gear disc, and the F surface is kept parallel to a G surface on the calibration block; the present invention can ensure that the parallelism of the surface A of the base and the G surface of the calibration block on the upper gear disc meets the requirements, and the coaxiality of the center of the upper gear disc and the center of the base meets the requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of installation and calibration of indexing mechanisms, and in particular to a device and method for implementing installation and calibration of a geared disc of an indexing mechanism. Background Art

[0002] The indexing mechanism is a supporting product for the inertial measurement unit (IMU), primarily providing an angle reference for the system's online self-calibration. The upper gear disc is used to mount the IMU. As crucial components of the indexing mechanism, the upper and lower gear discs require high installation precision relative to other components, such as the base. The G-surface of the calibration block on the upper gear disc, in particular, is a crucial mounting surface, as its phase angle directly determines the installation error of the upper system's IMU.

[0003] The purpose of the present invention is to calibrate the installation phase angle of the calibration block G surface on the upper gear plate relative to the base to a required value. If the upper gear plate is directly installed on the base, the installation phase angle of the two is difficult to adjust. Summary of the Invention

[0004] In response to the above technical problems, the present invention proposes a device for installing and calibrating a gear disc of a transfer mechanism, comprising a workbench and an upper gear disc, wherein a parallel guide rail is fixedly installed on the workbench by a screw, and a base is installed on the workbench, and the A surface on the base contacts the side surface of the parallel guide rail, and a center hole is provided at the axis center of the base, and a core shaft is detachably installed at the center hole, and a lower gear disc is coaxially installed at the center hole through the core shaft, and an F surface is provided on the circumference of the lower gear disc, and the upper gear disc is meshingly installed on the lower gear disc, and a calibration block and a movable groove are provided on the upper gear disc, and the F surface remains parallel to the G surface on the calibration block.

[0005] Furthermore, three screws 2 are evenly arranged on the lower gear plate in a circumferential shape, and three mounting holes matching the screws 2 are evenly arranged on the base in a circumferential shape.

[0006] Furthermore, a parallel module is detachably mounted on the F surface.

[0007] Furthermore, a clock-type dial indicator is installed on the workbench through a magnetic seat.

[0008] The present invention also proposes a calibration method for implementing a calibration device for a gear disc of an indexing mechanism, comprising the following steps:

[0009] S1. Clean the workbench surface and fix the parallel guide rail on the workbench with screws 1, while making the A surface on the base contact the side of the parallel guide rail;

[0010] S2. Install the lower gear disc coaxially on the center hole of the base through the core shaft and pre-position it. Set the F surface parallel to the parallel guide rail. Connect the lower gear disc to the base with three screws. Pre-fix the three screws and do not tighten them to ensure that the lower gear disc can be rotated manually.

[0011] S3. Place the parallel module flat on the F surface of the lower sprocket, and glue them firmly around the contact area between the parallel module and the lower sprocket;

[0012] S4. Remove the mandrel and install the upper gear disc on the lower gear disc in meshing engagement. Make the G surface on the lower gear disc pre-parallel to the parallel guide rail. Install the dial indicator on the workbench via the magnetic base. The dial indicator head is in vertical contact with the G surface on the upper gear disc. Push the base so that the base, upper gear disc, lower gear disc, and connected structures are moved horizontally along the parallel guide rail on the workbench by a fixed distance S. Read the change in the dial indicator reading to make the parallelism between the G surface on the upper gear disc and the A surface on the base less than 0.04 mm. If it does not meet the requirements, rotate the lower gear disc and readjust the assembly position of the lower gear disc and the base. Repeat the above steps to measure the parallelism between the G surface and the A surface again until the parallelism between the G surface and the A surface is less than 0.04 mm.

[0013] S5. Move the base, upper gear plate, lower gear plate, and connected structures to their initial positions by pushing the base. Reinstall the dial indicator, contact the dial indicator head with the M surface on the parallel module, and slide the same distance S as in S4. Record the maximum value H1 and the minimum value H2 of the dial indicator reading.

[0014] S6. Remove the upper sprocket and install the mandrel according to step S2. Then, according to step S5, test and record the maximum value h1 and the minimum value h2 of the dial indicator during the sliding process. If -0.02 ≤ [(H1-H2)-(h1-h2)] ≤ 0.02, the requirement is met, proving that the relative position of the lower sprocket has not changed significantly after the upper sprocket was removed.

[0015] S7. Fix the base and the lower sprocket at this time, and glue the outer circle of the lower sprocket and the base to ensure that the relative position does not change. Then tighten the three screws in sequence. Repeat step S4, and finally check the parallelism of surface A on the base and surface G on the upper sprocket. If it is unqualified, remove the glue that sticks the lower sprocket to the base, and recalibrate according to step S4 until the requirements are met.

[0016] Compared with the prior art, the present invention has the following advantages: (1) the present invention uses a clock-type dial indicator and a parallel module to repeatedly calibrate before and after the installation of the lower gear disc to ensure that the installation position does not change. After the final fixed state, the parallelism between the G surface of the calibration block on the upper gear disc and the A surface of the base is qualified, that is, the relative position of the upper gear disc and the base meets the requirements; (2) the present invention is easy to operate and the results are accurate. The parallelism, a quantifiable indicator, is used to reflect the phase angle of the upper and lower gear discs, and the dial indicator reading is recordable and traceable; (3) the present invention uses a special core shaft to ensure the coaxiality of the base and the lower gear disc. The final effect is that the parallelism between the A surface of the base and the G surface of the calibration block on the upper gear disc meets the requirements, and the coaxiality between the center of the upper gear disc and the center of the base meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of the verification device of the present invention.

[0018] Figure 2 It is a top view of the verification device of the present invention.

[0019] Figure 3 It is a side view of the verification device of the present invention.

[0020] Figure 4 Schematic diagram of the local structure of the verification device of the present invention Figure 1 .

[0021] Figure 5 Schematic diagram of the local structure of the verification device of the present invention Figure 2 .

[0022] Figure 6 Schematic diagram of the local structure of the verification device of the present invention Figure 3 .

[0023] Figure 7 The structure of the toothed disc on the calibration device of the present invention is shown in FIG. Figure 1 .

[0024] Figure 8 Schematic diagram of the local structure of the verification device of the present invention Figure 4 .

[0025] Figure 9 The structure of the toothed disc on the calibration device of the present invention is shown in FIG. Figure 2 .

[0026] Figure numbers: 1-workbench; 2-parallel guide rail; 3-base; 4-upper gear plate; 5-lower gear plate; 6-parallel module; 7-screw 2; 8-core shaft; 9-F surface; 10-G surface; 11-calibration block; 12-moving slot; 13-A surface; 14-M surface. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0028] Example: Figures 1-9 The device shown is a gear disc installation and calibration device for a transfer mechanism, comprising a workbench 1 and an upper gear disc 4. A parallel guide rail 2 is fixedly installed on the workbench 1 by a screw. A base 3 is installed on the workbench 1. The A surface 13 on the base 3 contacts the side of the parallel guide rail 2. A center hole is provided at the axis of the base 3. A core shaft 8 is detachably installed at the center hole. A lower gear disc 5 is coaxially installed at the center hole through the core shaft 8. An F surface 9 is provided on the circumference of the lower gear disc 5. The upper gear disc 4 is meshed and installed on the lower gear disc 5. A calibration block 11 and a movable groove 12 are provided on the upper gear disc 4. The F surface 9 remains parallel to the G surface 10 on the calibration block 11; three screws 7 are evenly arranged in a circular shape on the lower gear disc 5, and three mounting holes matching the screws 7 are evenly arranged in a circular shape on the base 3; a parallel module 6 is detachably installed on the F surface 9; a clock-type dial indicator is installed on the workbench 1 through a magnetic base.

[0029] In this embodiment, screw 1 is an M5 hexagon socket head screw, screw 2 7 is an M6 hexagon socket head screw, and glue is 502 glue.

[0030] The present invention also proposes a calibration method for implementing a calibration device for a gear disc of an indexing mechanism, comprising the following steps:

[0031] S1. Clean the surface of the workbench 1 and fix the parallel guide rail 2 on the workbench 1 using M5 hexagon socket head screws. At the same time, make the A surface 13 on the base 3 contact the side of the parallel guide rail 2.

[0032] S2. Install the lower gear plate 5 coaxially on the center hole of the base 3 through the core shaft 8 for pre-positioning, pre-set the F surface 9 and the parallel guide rail 2 in parallel, and connect the lower gear plate 5 to the base 3 through three M6 hexagon socket head screws 7. The three M6 hexagon socket head screws 7 are pre-fixed and not tightened to ensure that the lower gear plate 5 can be slightly rotated manually.

[0033] S3. Place the parallel module 6 flush with the F surface 9 on the lower gear plate 5. At the same time, firmly adhere the parallel module 6 and the lower gear plate 5 around the contact area with 502 glue.

[0034] S4. Take out the core shaft 8, mesh the upper gear disc 4 and install it on the lower gear disc 5, so that the G surface 10 on the lower gear disc 5 is pre-parallel to the parallel guide rail 2, and install the clock-type dial indicator on the workbench 1 through the magnetic base. The head of the clock-type dial indicator vertically contacts the G surface 10 on the upper gear disc 4 (the contact must be in place, otherwise the percentage indication number will not change). By pushing the base 3, the base 3, the upper gear disc 4, the lower gear disc 5 and the connected structure are moved a fixed distance S on the workbench 1 in the horizontal direction along the parallel guide rail 2. Read the changes in the clock-type dial indicator reading to make the parallelism of the G surface 10 on the upper gear disc 4 and the A surface 13 on the base 3 less than 0.04mm. If it does not meet the requirements, rotate the lower gear disc 5, readjust the assembly position of the lower gear disc 5 and the base 3, and repeat the above steps to measure the parallelism of the G surface 10 and the A surface 13 again until the parallelism of the G surface 10 and the A surface 13 is less than 0.04mm.

[0035] S5. Move the base 3, the upper gear plate 4, the lower gear plate 5 and the connected structure to the initial position by pushing the base 3. Reinstall the dial indicator. Make the dial indicator head contact the M surface 14 on the parallel module 6. Slide the same distance S according to step S4. Record the maximum value H1 and the minimum value H2 of the dial indicator reading.

[0036] S6. Remove the upper gear disc 4, install the core shaft 8 according to step S2, and then detect and record the maximum value h1 and minimum value h2 of the reading of the clock dial indicator during the sliding process according to step S5; if -0.02≤[(H1-H2)-(h1-h2)]≤0.02, it meets the requirements, proving that the relative position of the lower gear disc 5 has not changed significantly after the upper gear disc 4 was removed.

[0037] S7. At this time, fix the base 3 and the lower gear plate 5, and use 502 glue to bond the outer circle of the lower gear plate 5 and the base 3 to ensure that the relative position does not change. Then tighten the three M6 hexagon socket head screws 7 in sequence; repeat step S4, and finally check the parallelism of the A surface 13 on the base 3 and the G surface 10 on the upper gear plate 4. If it is unqualified, remove the 502 glue that adheres the lower gear plate 5 to the base 3, and recalibrate according to step S4 until the requirements are met.

Claims

1. A calibration method for realizing a gear disc installation calibration device for a transfer mechanism, wherein the gear disc installation calibration device for a transfer mechanism is realized, comprising a workbench (1) and an upper gear disc (4), wherein a parallel guide rail (2) is fixedly installed on the workbench (1) by a screw, a base (3) is installed on the workbench (1), an A surface (13) on the base (3) contacts the side of the parallel guide rail (2), a center hole is provided at the axis of the base (3), a core shaft (8) is detachably installed at the center hole, a lower gear disc (5) is coaxially installed at the center hole through the core shaft (8), an F surface (9) is provided on the circumference of the lower gear disc (5), the upper gear disc (4) is meshedly installed on the lower gear disc (5), a calibration block (11) and a movable groove (12) are provided on the upper gear disc (4), the F surface (9) is kept parallel to the G surface (10) on the calibration block (11), and a parallel module (6) is detachably installed on the F surface (9), characterized in that The following steps are involved: S1. Clean the surface of the workbench (1), fix the parallel guide rail (2) on the workbench (1) with screw 1, and make the A surface (13) on the base (3) contact the side of the parallel guide rail (2); S2. Install the lower toothed disc (5) coaxially on the center hole of the base (3) through the core shaft (8) for pre-positioning, pre-set the F surface (9) and the parallel guide rail (2) in parallel, connect the lower toothed disc (5) to the base (3) through three screws (7), and pre-fix the three screws (7) without tightening them to ensure that the lower toothed disc (5) can be rotated manually; S3, the parallel module (6) is flat against the F surface (9) on the lower toothed disc (5), and the parallel module (6) and the lower toothed disc (5) are firmly bonded by glue around the contact area; S4. Take out the core shaft (8), mesh the upper toothed disc (4) and install it on the lower toothed disc (5), so that the G surface (10) on the lower toothed disc (5) is pre-parallel to the parallel guide rail (2), and install the clock dial indicator on the workbench (1) through the magnetic base. The head of the clock dial indicator vertically contacts the G surface (10) on the upper toothed disc (4). By pushing the base (3), the base (3), the upper toothed disc (4), the lower toothed disc (5) and the connected structure are horizontally along the parallel guide rail (2). Move a fixed distance S on the workbench (1), read the change in the reading of the dial indicator, so that the parallelism of the G surface (10) on the upper gear plate (4) and the A surface (13) on the base (3) is less than 0.04mm. If it does not meet the requirements, rotate the lower gear plate (5), readjust the assembly position of the lower gear plate (5) and the base (3), repeat the above steps to measure the parallelism of the G surface (10) and the A surface (13) again, until the parallelism of the G surface (10) and the A surface (13) is less than 0.04mm; S5. Move the base (3), the upper gear plate (4), the lower gear plate (5) and the connected structure to the initial position by pushing the base (3). Reinstall the dial indicator. Contact the dial indicator head with the M surface (14) on the parallel module (6). Slide the same distance S according to step S4. Record the maximum value H1 and the minimum value H2 of the dial indicator reading. S6, remove the upper toothed disc (4), install the core shaft (8) according to step S2, and then detect and record the maximum value h1 and minimum value h2 of the reading of the clock dial indicator during the sliding process according to step S5; if -0.02≤[(H1-H2)-(h1-h2)]≤0.02, it meets the requirements, proving that after removing the upper toothed disc (4), the relative position of the lower toothed disc (5) has not changed significantly; S7. At this time, the base (3) and the lower toothed disc (5) are fixed, and the lower toothed disc (5) and the base (3) are bonded by glue in a circle around the outer periphery of the contact to ensure that the relative position does not change. Then, the three screws (7) are tightened in sequence; repeat the S4 step, and finally check the parallelism of the A surface (13) on the base (3) and the G surface (10) on the upper toothed disc (4). If it is unqualified, remove the glue that adheres the lower toothed disc (5) and the base (3), and recalibrate according to the S4 step until the requirements are met.

2. A calibration method for realizing a calibration device for a gear disc installation of an indexing mechanism according to claim 1, characterized in that: Three screws (7) are evenly arranged on the lower gear plate (5) in a circular shape, and three mounting holes matching the screws (7) are evenly arranged on the base (3) in a circular shape.

3. A calibration method for realizing a calibration device for a gear disc installation of an indexing mechanism according to claim 1, characterized in that: A clock-type dial indicator is mounted on the workbench (1) via a magnetic seat.

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