Azimuthal repeater concentric assembly

Abstract

The application discloses a method for assembling an azimuthal division compass, which comprises the following steps: taking a shell as an initial reference to position and install a motor, then taking a shaft sleeve on a motor output shaft as a second reference to position and install an inner scale disc, so that the inner scale disc has higher concentricity with the shell; then taking the shell as a reference to position and install an outer scale disc, so that the outer scale disc has higher concentricity with the inner scale disc; finally, adjusting the concentricity between a connecting sleeve and the outer scale disc, inserting a connecting shaft at the lower end of an optical azimuth instrument into the connecting sleeve, so that the optical azimuth instrument has higher concentricity with the outer scale disc; the inner scale disc and the optical azimuth instrument both have higher concentricity with the outer scale disc, so that the inner scale disc, the outer scale disc and the optical azimuth instrument have higher concentricity after the assembly is completed, and further fine adjustment and calibration of the concentricity of the three parts is facilitated, and the measurement precision of the azimuthal division compass is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of correcting parts to be assembled, and particularly relates to a method for assembling an azimuth repeater in a concentric manner. BACKGROUND

[0002] The azimuth repeater refers to a kind of repeater fixed directly on a support without a balance ring, used to repeat the heading of a master compass, and to measure the azimuth and broadside angle of a target by means of an optical azimuth instrument. The azimuth repeater is generally installed on the central axis of a ship or on the two sides. The azimuth repeater comprises a shell, the upper end of the shell is in a cylindrical shape, a mounting plate is horizontally arranged in the shell, a motor is fixed in the shell based on the mounting plate, the output shaft of the motor faces upwards, an inner scale disc is coaxially connected to the output shaft of the motor, an outer scale disc is coaxially arranged on the upper end face of the shell, the outer scale disc is in an annular shape and connected with a transparent disc on the inner side to facilitate reading the value of the inner scale disc, a connecting sleeve is arranged on the inner side of the transparent disc, and the inner hole of the connecting sleeve is provided for inserting the connecting shaft at the lower end of the optical azimuth instrument to make the optical azimuth instrument concentric with the outer scale disc.

[0003] In the assembly process of the azimuth repeater, the higher the concentricity of the inner scale disc, the outer scale disc and the optical azimuth instrument, the more accurate the measurement when the azimuth repeater is used with the optical azimuth instrument, that is, the coincidence of the centers of the inner scale disc and the outer scale disc and the coincidence of the center of the outer scale disc and the inner hole of the connecting sleeve need to be ensured during assembly. Chinese patent CN106041512A discloses a concentricity calibration device and method for the assembly of an azimuth repeater. The scheme mainly aims at the azimuth repeater which has been preliminarily assembled, and further fine-tunes and calibrates the concentricity of the inner scale disc, the outer scale disc and the optical azimuth instrument. In order to further fine-tune and calibrate the concentricity of the three, improve the measurement accuracy of the azimuth repeater, shorten the time required for fine-tuning and calibration, and improve the efficiency, the preliminary assembly of the azimuth repeater should also make the three reach a higher concentricity, but the current assembly method of the azimuth repeater is difficult to achieve. SUMMARY

[0004] In view of the above deficiencies in the prior art, the purpose of the present application is to provide a method for assembling an azimuth repeater in a concentric manner, to solve the technical problem of poor concentricity of the inner scale disc, the outer scale disc and the optical azimuth instrument during assembly, and to achieve the effect of improving the measurement accuracy of the azimuth repeater.

[0005] To solve the above technical problems, the present application adopts the following technical scheme:

[0006] A method for assembling an azimuth repeater in a concentric manner, comprising the following steps:

[0007] 1) installing the motor coaxially in the shell based on the shell as a reference;

[0008] 2) install the inner scale disc coaxially on the output shaft of the motor;

[0009] 3) install the outer scale disc coaxially on the upper end of the shell;

[0010] 4) adjust the connecting sleeve and make its inner hole concentric with the outer scale disc, then fix the connecting sleeve on the outer scale disc;

[0011] 5) install the optical azimuth instrument.

[0012] Further, the corresponding assembly structure of step 1) comprises a shell with a cylindrical upper end, at least two circumferentially spaced pin holes are formed on the upper end surface of the shell; a motor is arranged in the shell, the output shaft of the motor faces upward and is sleeved with a shaft sleeve, the shaft sleeve is sleeved on the output shaft of the motor through a lower hole formed on the lower end surface, and an upper hole is also formed on the upper end surface of the shaft sleeve; a positioning plate is arranged on the upper end of the shell, a pin hole corresponding to the pin hole on the upper end surface of the shell is formed on the positioning plate, and the positioning plate is positioned and connected with the shell by passing a pin shaft through the pin holes on the positioning plate and the upper end surface of the shell one by one; a positioning hole is formed in the center of the positioning plate, a first positioning shaft is inserted into the positioning hole, the first positioning shaft comprises a first medium diameter section and a first small diameter section which are sequentially reduced in diameter from top to bottom, the diameter of the first medium diameter section matches the diameter of the positioning hole and is inserted into the positioning hole, the first positioning shaft extends downward and the diameter of the first small diameter section matches the diameter of the upper hole on the upper end surface of the shaft sleeve and is inserted into the upper hole.

[0013] Preferably, the following conditions are ensured in advance: the circle where the pin holes on the upper end surface of the shell are located is coaxial with the inner hole of the shell within a technical requirement; the circle where the pin holes on the positioning plate are located is coaxial with the positioning hole within a technical requirement; the lower hole and the upper hole on the shaft sleeve are coaxial within a technical requirement; the first medium diameter section and the first small diameter section of the first positioning shaft are coaxial within a technical requirement.

[0014] The specific operation of the corresponding assembly structure of step 1) is as follows: the motor with the shaft sleeve sleeved on the output shaft is placed in the shell, the positioning plate is placed on the upper end of the shell and positioned and connected by the pin shaft, so as to ensure the coaxiality of the positioning hole and the shell, the first positioning shaft is inserted into the positioning hole, the first medium diameter section cooperates with the positioning hole, the motor is adjusted and the upper hole on the shaft sleeve is sleeved on the first small diameter section, so as to ensure the coaxiality of the motor and the shell, and the motor and the shell are fixedly connected.

[0015] Further, the positioning plate comprises a positioning ring plate and a center block connected to the inner side of the positioning ring plate, the positioning hole is formed on the center block, and the center block is connected with the positioning ring plate through a plurality of spoke plates distributed in the circumferential direction.

[0016] Further, in the corresponding assembly structure of step 1), an outer positioning ring and an inner positioning ring are formed on the lower surface of the positioning plate, the outer positioning ring is located outside the shell, and the inner positioning ring is located inside the shell.

[0017] Wherein, it is ensured in advance that the inner circle surface of the outer positioning ring, the outer circle surface of the inner positioning ring and the processing of the positioning hole achieve the coaxiality of the technical requirements; in step 1), when the positioning plate is placed on the upper end of the shell, the upper end of the shell is first located between the outer positioning ring and the inner positioning ring to achieve the preliminary positioning of the positioning plate, and then the positioning plate is adjusted and connected to the shell through the pin shaft.

[0018] Further, in the corresponding assembly structure of step 1), the first positioning shaft comprises a first large diameter section, a first medium diameter section and a first small diameter section which are sequentially reduced from top to bottom, and the first large diameter section is located above the positioning plate and abuts.

[0019] Further, the corresponding assembly structure of step 2) comprises an inner scale disc provided on the upper end of the shaft sleeve, a connecting hole is provided at the center of the inner scale disc, a connecting ring table is formed on the upper end of the shaft sleeve outside the upper hole and protrudes, the outer diameter of the connecting ring table matches the inner diameter of the connecting hole, the connecting ring table is located in the connecting hole and is lower than the upper end surface of the inner scale disc, a pressing plate is provided on the inner scale disc, and the pressing plate is fixed on the connecting ring table by a vertically arranged bolt and tightly fixes the inner scale disc on the shaft sleeve;

[0020] Wherein, it is ensured in advance that the connecting hole and the inner scale disc (the circle where the scale line on the inner scale disc is located) achieve the coaxiality of the technical requirements; the outer circle surface of the connecting ring table on the upper end of the shaft sleeve, the lower hole and the upper hole achieve the coaxiality of the technical requirements;

[0021] The specific operation of the corresponding assembly structure of step 2) is: taking out the first positioning shaft, withdrawing each pin shaft and dismounting the positioning plate, placing the inner scale disc on the shaft sleeve and making the connecting ring table located in the connecting hole, so as to ensure the coaxiality of the inner scale disc and the motor, and tightly fixing the pressing plate on the connecting ring table by the bolt to clamp and fix the inner scale disc.

[0022] Further, the corresponding assembly structure of step 3) comprises an outer scale disc provided on the upper end of the shell, the lower end surface of the outer scale disc is provided with pin holes corresponding to the pin holes of the upper end surface of the shell, and the outer scale disc is positioned and connected with the shell by passing through the pin holes of the upper end surface of the shell and the lower end surface of the outer scale disc one by one through the pin shafts;

[0023] Wherein, it is ensured in advance that the circle where each pin hole on the lower end surface of the outer scale disc is located and the outer scale disc (the circle where the scale line on the outer scale disc is located) achieve the coaxiality of the technical requirements; the specific operation of the corresponding assembly structure of step 3) is: placing the outer scale disc on the upper end of the shell and positioning and connecting through the pin shafts, so as to ensure the coaxiality of the outer scale disc and the shell, and fixing the outer scale disc and the shell by the fastener.

[0024] Further, the corresponding assembly structure of step 4) comprises an outer scale disc arranged at the upper end of the shell, the outer scale disc comprises a scale ring plate and a positioning sleeve connected to the inner side of the scale ring plate, the upper end of the positioning sleeve is higher than the scale ring plate, a spinning sleeve is arranged at the upper end of the positioning sleeve and is screwed, the upper end of the spinning sleeve is higher than the positioning sleeve and the inner side of the spinning sleeve protrudes to form a ring-shaped pressing plate, a connecting sleeve is abutted between the ring-shaped pressing plate and the upper end of the positioning sleeve, the inner diameter of the connecting sleeve is smaller than the inner diameters of the positioning sleeve and the ring-shaped pressing plate; a second positioning shaft is inserted into the inner hole of the connecting sleeve, the second positioning shaft comprises a second large-diameter section and a second small-diameter section which are sequentially reduced in diameter from top to bottom, the diameter of the second large-diameter section matches the inner diameter of the ring-shaped pressing plate and is inserted into the inner hole of the ring-shaped pressing plate, the second positioning shaft extends downward and the diameter of the second small-diameter section matches the inner diameter of the connecting sleeve and is inserted into the inner hole of the connecting sleeve;

[0025] In the outer scale disc, each pin hole is machined on the scale ring plate, the spinning sleeve is screwed on the positioning sleeve, and the positioning sleeve is assembled and connected on the scale ring plate; it is previously ensured that the inner hole of the scale ring plate and the circle on which each pin hole on the scale ring plate is located are machined to a coaxiality meeting a technical requirement, and the assembly of the positioning sleeve, the spinning sleeve and the scale ring plate makes the inner hole of the ring-shaped pressing plate and the circle on which each pin hole on the scale ring plate is located meet a coaxiality meeting a technical requirement; the machining of the second large-diameter section and the second small-diameter section on the second positioning shaft meets a coaxiality meeting a technical requirement.

[0026] The specific operation of the corresponding assembly structure of step 4) is as follows: the spinning sleeve is loosened so that the connecting sleeve is in a movable state between the ring-shaped pressing plate and the upper end of the positioning sleeve, the second small-diameter section is inserted into the inner hole of the connecting sleeve, the second positioning shaft is adjusted until the second large-diameter section is inserted into the inner hole of the ring-shaped pressing plate, so as to ensure the coaxiality of the inner hole of the connecting sleeve and the outer scale disc, and the spinning sleeve is tightened to press and fix the connecting sleeve.

[0027] Further, the inner side of the scale ring plate is connected with a transparent ring plate, and the positioning sleeve is connected to the inner side of the transparent ring plate, and the upper end of the positioning sleeve is higher than the transparent ring plate.

[0028] Further, the specific operation of step 5) is as follows: the second positioning shaft is taken out, and the connecting shaft of the optical azimuth instrument is inserted into the inner hole of the connecting sleeve, so as to ensure the coaxiality of the optical azimuth instrument and the azimuth division compass.

[0029] Compared with the prior art, the present application has the following beneficial effects:

[0030] The azimuth division compass concentric assembly method positions and installs the motor by taking the shell as the initial reference, then positions and installs the shaft sleeve on the motor output shaft as the second reference to install the inner scale disc, so that the inner scale disc has higher concentricity with the shell; then positions and installs the outer scale disc by taking the shell as the reference, so that the outer scale disc has higher concentricity with the inner scale disc; finally, the connecting sleeve is adjusted to be concentric with the outer scale disc, the connecting shaft at the lower end of the optical azimuth instrument is inserted into the connecting sleeve, so that the optical azimuth instrument has higher concentricity with the outer scale disc; the inner scale disc and the optical azimuth instrument both have higher concentricity with the outer scale disc, so that after the assembly is completed, the inner scale disc, the outer scale disc and the optical azimuth instrument all have higher concentricity, which is convenient for further fine adjustment and calibration of the concentricity of the three, and improves the measurement accuracy of the azimuth division compass. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 The schematic diagram of the corresponding assembly structure corresponding to step 1) of the embodiment;

[0032] Figure 2 The schematic diagram of the structure of the first positioning shaft of the embodiment;

[0033] Figure 3 The schematic diagram of the corresponding assembly structure corresponding to step 2) of the embodiment;

[0034] Figure 4 The schematic diagram of the corresponding assembly structure corresponding to steps 3) and 4) of the embodiment;

[0035] Figure 5 The schematic diagram of the structure of the second positioning shaft of the embodiment; Figure 4 The enlarged schematic diagram of A in the embodiment;

[0036] Figure 6 The schematic diagram of the structure of the second positioning shaft of the embodiment;

[0037] The shell 1, the motor 11, the shaft sleeve 12, the connecting ring table 13, the mounting plate 14, the bolt 15, the support pipe 16, the positioning part 17, the lower pin hole 18; the positioning plate 2, the positioning ring plate 21, the spoke plate 22, the center block 23, the outer positioning ring 24, the inner positioning ring 25, the first pin shaft 26; the first positioning shaft 3, the first large diameter section 31, the first medium diameter section 32, the first small diameter section 33; the inner scale disc 4, the pressing plate 41; the outer scale disc 5, the scale ring plate 51, the transparent ring plate 52, the positioning sleeve 53, the lower sleeve body 54, the upper sleeve body 55, the upper abutting part 56, the lower abutting part 57, the second pin shaft 58; the spinning sleeve 6, the annular pressing plate 61; the connecting sleeve 7, the annular extension part 71, the annular limiting part 72; the second positioning shaft 8, the second large diameter section 81, the second small diameter section 82, the annular positioning groove 83. DETAILED DESCRIPTION

[0038] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings of the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0039] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the present application, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In the description of the present application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] Embodiment:

[0041] A method for assembling a bearing compass concentrically, comprising the following steps:

[0042] 1) Taking the shell 1 as a reference, the motor 11 is coaxially installed in the shell 1;

[0043] 2) install the inner dial 4 coaxially on the output shaft of the motor 11;

[0044] 3) install the outer dial 5 coaxially on the upper end of the shell 1;

[0045] 4) adjust and fix the connecting sleeve 7 so that its inner hole is concentric with the outer dial 5;

[0046] 5) install the optical azimuth instrument so that it is concentric with the outer dial 5.

[0047] The azimuth dividing compass concentric assembly method disclosed in the application installs the motor 11 by taking the shell 1 as the initial reference, then installs the inner dial 4 on the shaft sleeve 12 of the output shaft of the motor 11 as the second reference, so that the inner dial 4 has higher concentricity with the shell 1 and the motor 11; then installs the outer dial 5 by taking the shell 1 as the reference, so that the outer dial 5 has higher concentricity with the inner dial 4; finally, adjusts the connecting sleeve 7 to be concentric with the outer dial 5, and inserts the connecting shaft at the lower end of the optical azimuth instrument into the connecting sleeve 7, so that the optical azimuth instrument has higher concentricity with the outer dial 5; the inner dial 4 and the optical azimuth instrument both have higher concentricity with the outer dial 5, so that after the assembly is completed, the inner dial 4, the outer dial 5 and the optical azimuth instrument have higher concentricity, which is convenient for further fine adjustment and calibration of the concentricity of the three, and improves the measurement accuracy of the azimuth dividing compass.

[0048] Specifically, please refer to Figure 1 and Figure 2 , step 1) the corresponding assembly structure includes the cylindrical shell 1 at the upper end, the motor 11 is coaxially arranged in the shell 1, the output shaft of the motor 11 faces upward and is coaxially sleeved with the shaft sleeve 12; the circular positioning plate 2 is positioned and installed on the upper end of the shell 1 through the vertically arranged multiple first pin shafts 26, the positioning plate 2 is coaxial with the shell 1, and the multiple first pin shafts 26 are evenly distributed in the circumferential direction; the center of the positioning plate 2 is provided with a positioning hole, and the first positioning shaft 3 extending into the inner hole of the shaft sleeve 12 is inserted into the positioning hole, and the diameter of the first positioning shaft 3 matches the diameter of the positioning hole and the inner hole of the shaft sleeve 12;

[0049] In the embodiment, multiple support pipes 16 are vertically arranged in the shell 1, the mounting plate 14 is horizontally arranged on the support pipes 16, the mounting plate 14 is fixedly connected with the support pipes 16 through the bolts 15, and the motor 11 is fixedly connected on the mounting plate 14; the inner hole of the shaft sleeve 12 includes an upper hole and a lower hole, the diameter of the lower hole matches the diameter of the output shaft of the motor 11, the output shaft of the motor 11 is located in the lower hole, and the diameter of the upper hole matches the diameter of the first positioning shaft 3, and the lower end of the first positioning shaft 3 extends into the upper hole;

[0050] The specific operation of step 1) is that the motor 11 with the shaft sleeve 12 sleeved on the output shaft is placed in the shell 1, the positioning plate 2 is placed at the upper end of the shell 1 and is positioned and connected through the plurality of first pin shafts 26, the first positioning shaft 3 is inserted into the positioning hole, the position of the motor 11 is adjusted, the lower end of the first positioning shaft 3 is inserted into the upper hole of the shaft sleeve 12, so that the motor 11 is coaxial with the shell 1, the motor 11 is fixedly connected with the shell 1, the first positioning shaft 3 is taken out and the positioning plate 2 is removed; it can be understood that the positioning hole and the first positioning shaft 3 should have a certain axial matching length.

[0051] Please refer to Figure 1 , the positioning plate 2 includes a positioning ring plate 21 and a center block 23 connected to the inner side of the positioning ring plate 21 and coaxial with the positioning ring plate 21, the positioning hole is opened on the center block 23, and the center block 23 is connected with the positioning ring plate 21 through a plurality of spoke plates 22 uniformly distributed in the circumference; so as to operate the motor 11 through the gap between each spoke plate 22, adjust the position and fix.

[0052] Please refer to Figure 1 and Figure 2 , in the corresponding assembly structure of step 1), the first positioning shaft 3 includes a first large diameter section 31, a first medium diameter section 32 and a first small diameter section 33 which are coaxially connected in order of decreasing diameter from top to bottom, the diameter of the first small diameter section 33 matches the diameter of the upper hole of the shaft sleeve 12 and is located in the upper hole, the diameter of the first medium diameter section 32 matches the diameter of the positioning hole and is located in the positioning hole, and the first large diameter section 31 is located above the positioning plate 2 and abuts;

[0053] In the implementation, the distance between the shaft sleeve 12 and the end face of the shell 1 is different in different specifications and different manufacturers' azimuth compasses, when the distance is far, after the first positioning shaft 3 is inserted into the upper hole of the shaft sleeve 12 and loosened, the first positioning shaft 3 may move downward and be separated from the positioning hole, resulting in positioning failure, so the length of the first positioning shaft 3 needs to be increased to make the lower end thereof abut against the bottom of the upper hole of the shaft sleeve 12, but the first positioning shaft 3 is long and may have a tendency to swing radially, or the vertical position of the first positioning shaft 3 is maintained by hand or an additional tool, which is not conducive to the positioning and installation of the motor 11; after the first positioning shaft 3 is designed as a three-section stepped shaft, the first large diameter section 31 is located above the positioning plate 2 and abuts, the first positioning shaft 3 does not continue to move downward after being inserted, the length of the first positioning shaft 3 does not need to be increased, or the vertical position of the first positioning shaft 3 does not need to be maintained by hand or an additional tool, so as to facilitate the installation of the motor 11 and improve the installation precision of the motor 11.

[0054] Specifically, please refer to Figure 3, step 2) the corresponding assembly structure includes an inner dial 4 located at the upper end of the shaft sleeve 12, the center of the inner dial 4 is provided with a connecting hole, the upper end of the shaft sleeve 12 is protruded to form a connecting ring table 13 coaxial with the inner hole of the shaft sleeve 12, the outer diameter of the connecting ring table 13 matches the inner diameter of the connecting hole, the connecting ring table 13 is located in the connecting hole and the upper end surface of the connecting ring table 13 is lower than the upper end surface of the inner dial 4, the inner dial 4 is provided with a pressing plate 41, the pressing plate 41 is clamped and fixed on the connecting ring table 13 by a plurality of screws (not shown in the figure) vertically arranged and uniformly distributed in the circumferential direction, and the inner dial 4 is clamped and fixed between the upper end surface of the shaft sleeve 12 and the pressing plate 41;

[0055] The specific operation of step 2) is that the inner dial 4 is placed on the shaft sleeve 12 and the connecting ring table 13 is located in the connecting hole, the inner dial 4 is coaxial with the motor 11, and the pressing plate 41 is clamped and fixed on the connecting ring table 13 by the plurality of screws to clamp and fix the inner dial 4.

[0056] Specifically, please refer to Figure 3 , step 3) the corresponding assembly structure includes an outer dial 5, the outer dial 5 is positioned and installed on the upper end of the shell 1 by a plurality of second pin shafts 58 vertically arranged and uniformly distributed in the circumferential direction, and the outer dial 5 is coaxial with the shell 1.

[0057] The specific operation of step 3) is that the outer dial 5 is placed on the upper end of the shell 1 and connected by positioning the second pin shaft 58, so that the outer dial 5 is coaxial with the shell 1.

[0058] Please refer to Figure 1 and Figure 4 , the upper end of the shell 1 is outwardly protruded to form a ring of positioning portions 17, the upper surface of the positioning portion 17 is flush with the upper end surface of the shell 1, a plurality of lower pin holes 18 are vertically and throughly provided on the positioning portion 17, the plurality of lower pin holes 18 are uniformly distributed in the circumferential direction, a plurality of first upper pin holes corresponding to the plurality of lower pin holes 18 are vertically and throughly provided on the positioning plate 2, and in step 1), after the positioning plate 2 is placed on the upper end of the shell 1, the plurality of first upper pin holes are aligned with the plurality of lower pin holes 18 one by one and inserted into the first pin shaft 26 to realize positioning connection.

[0059] The lower surface of the outer dial 5 is vertically provided with a plurality of second upper pin holes corresponding to the plurality of lower pin holes 18. In step 3), after the outer dial 5 is placed at the upper end of the shell 1, the plurality of second upper pin holes are aligned with the plurality of lower pin holes 18 one by one and the second pin shafts 58 are inserted from bottom to top to achieve positioning connection (the inner end of the second upper pin hole can have a radial vent hole). In this way, the positioning plate 2 and the outer dial 5 are both positioned and connected to the shell 1 based on the lower pin holes 18, and the two are connected to the shell 1 in sequence with high concentricity. The inner dial 4 is also positioned and installed based on the motor 11 and the shaft sleeve 12 of the positioning plate 2, which is conducive to improving the concentricity of the inner dial 4 and the outer dial 5. In practice, the second pin shaft 58 can directly use the first pin shaft 26 or have different lengths in combination with different connecting parts.

[0060] Please refer to Figure 1 , the lower surface of the positioning plate 2 is further provided with an outer positioning ring 24 and an inner positioning ring 25 located inside the outer positioning ring 24. The inner diameter of the outer positioning ring 24 is slightly larger than the outer diameter of the positioning portion 17, and the outer diameter of the inner positioning ring 25 is slightly smaller than the inner diameter of the upper end of the shell 1. In step 1), when the positioning plate 2 is placed at the upper end of the shell 1, the positioning portion 17 is located between the outer positioning ring 24 and the inner positioning ring 25, achieving preliminary positioning of the positioning plate 2, so as to further adjust the positioning plate 2 to align the plurality of first upper pin holes with the plurality of lower pin holes 18 one by one, preferably two in the embodiment, and then correspondingly inserting two first pin shafts 26 to achieve precise positioning connection.

[0061] Specifically, please refer to Figure 4 , Figure 5 and Figure 6 , step 4) corresponds to the assembly structure including the outer dial 5 coaxially arranged at the upper end of the shell 1. The outer dial 5 includes a dial ring plate 51 and a positioning sleeve 53 connected to the inner side of the dial ring plate 51. The positioning sleeve 53 is coaxial with the outer dial 5. The upper end of the positioning sleeve 53 is higher than the dial ring plate 51. The upper end of the positioning sleeve 53 is provided with a spinning sleeve 6 and is threadedly connected. The upper end of the spinning sleeve 6 is higher than the positioning sleeve 53 and the inner side of the spinning sleeve 6 is provided with a ring-shaped pressing plate 61. The inner hole of the ring-shaped pressing plate 61 is coaxial with the positioning sleeve 53. The ring-shaped pressing plate 61 abuts against the upper end of the positioning sleeve 53. The inner hole of the ring-shaped pressing plate 61 is coaxial with the connecting sleeve 7 and the inner diameter of the connecting sleeve 7 is smaller than the inner diameter of the positioning sleeve 53. The second positioning shaft 8 is inserted into the inner hole of the connecting sleeve 7. The second positioning shaft 8 includes a second large diameter section 81 and a second small diameter section 82 which are coaxially connected in sequence from top to bottom. The second small diameter section 82 is inserted into the inner hole of the connecting sleeve 7 and the diameter of the second small diameter section 82 matches the inner hole diameter of the connecting sleeve 7. The second large diameter section 81 is located in the inner hole of the ring-shaped pressing plate 61 and the diameter of the second large diameter section 81 matches the inner hole diameter of the ring-shaped pressing plate 61.

[0062] The specific operation of step 4) is that the second small-diameter section 82 is inserted into the inner hole of the connecting sleeve 7, the position of the second positioning shaft 8 is adjusted until the second large-diameter section 81 is inserted into the inner hole of the annular pressing plate 61, the spinning sleeve 6 is tightened to fix the connecting sleeve 7, and the second positioning shaft 8 is removed.

[0063] Please refer to Figure 4 In order to facilitate reading of the reading of the inner scale disc 4, the inner side of the scale ring plate 51 is connected with a transparent ring plate 52, and the positioning sleeve 53 is connected to the inner side of the transparent ring plate 52, and the upper end of the positioning sleeve 53 is higher than the transparent ring plate 52.

[0064] The specific operation of step 5) is that the connecting shaft of the optical azimuth instrument is inserted into the inner hole of the connecting sleeve 7, so that the optical azimuth instrument is coaxial with the azimuth division compass.

[0065] Please refer to Figure 5 The positioning sleeve 53 includes a lower sleeve body 54 in a cylindrical shape and an upper sleeve body 55 located in the lower sleeve body 54, the upper end of the upper sleeve body 55 is higher than the transparent ring plate 52 and protrudes to form a ring of upper abutting portions 56, the lower end of the upper sleeve body 55 is closed, the spinning sleeve 6 is sleeved outside the upper abutting portions 56 and is threadedly connected, the lower end of the lower sleeve body 54 is lower than the transparent ring plate 52 and protrudes to form a ring of lower abutting portions 57, the lower abutting portions 57 of the upper abutting portions 56 respectively abut against the upper surface and the lower surface of the transparent ring plate 52, and the upper sleeve body 55 is tightly matched with the lower sleeve body 54 to fix the positioning sleeve 53 on the transparent ring plate 52; in the embodiment, rubber pads are clamped between the upper abutting portions 56, the lower abutting portions 57 and the transparent ring plate 52.

[0066] In addition, please refer to Figure 5 and Figure 6 The upper end surface of the connecting sleeve 7 protrudes to form a ring-shaped extension portion 71 surrounding the inner hole of the connecting sleeve 7, the ring-shaped extension portion 71 is coaxial with the connecting sleeve 7 and has an outer diameter smaller than the inner diameter of the annular pressing plate 61, and the inner hole diameter of the ring-shaped extension portion 71 matches the inner hole diameter of the connecting sleeve 7; the abutting surface of the second large-diameter section 81 and the second small-diameter section 82 is provided with a ring-shaped positioning groove 83 surrounding the second small-diameter section 82, the depth of the ring-shaped positioning groove 83 is greater than the protruding height of the ring-shaped extension portion 71, and the ring-shaped extension portion 71 is located in the ring-shaped positioning groove 83; the lower end surface of the connecting sleeve 7 protrudes to form a ring-shaped limiting portion 72 surrounding the inner hole of the connecting sleeve 7, the outer diameter of the ring-shaped limiting portion 72 is smaller than the inner diameter of the upper sleeve body 55, the inner hole diameter of the ring-shaped limiting portion 72 matches the inner hole diameter of the connecting sleeve 7, and the lower end of the ring-shaped limiting portion 72 is spaced from the inner hole bottom of the upper sleeve body 55.

[0067] The azimuth division compass concentric assembly method provided by the application uses two positioning shafts (the first positioning shaft 3 and the second positioning shaft 8) and a positioning plate 2 as an assembly and debugging tool during the assembly process, and the coaxialities of multiple machined parts need to be ensured in advance:

[0068] The coaxiality of the circle where the pin holes on the upper end face of the shell 1 are located and the processing of the inner hole of the shell 1 reaches the coaxiality requirement, which can be selected as follows: after the rough processing of the shell 1, the pin hole, the inner hole (inner wall) and the outer circle are processed by one-time clamping of the machining center; the coaxiality of the circle where the pin holes on the positioning plate 17 are located and the processing of the positioning hole reaches the coaxiality requirement, the coaxiality of the inner circle face of the outer positioning ring 24 and the outer circle face of the inner positioning ring 25 and the processing of the positioning hole reaches the coaxiality requirement, which can be selected as follows: the pin hole, the positioning hole and the ring groove of the outer positioning ring 24 and the outer circle face of the inner positioning ring 25 are processed by one-time clamping of the machining center; the coaxiality of the connecting hole and the inner scale disc 4 (the circle where the scale lines are located) reaches the coaxiality requirement; the coaxiality of the outer circle face of the connecting ring table 13, the lower hole and the upper hole on the shaft sleeve 12 reaches the coaxiality requirement, which can be selected as follows: the outer circle face of the connecting ring table 13 and the upper hole are processed by one-time clamping, and then the lower hole is processed based on the upper hole; the coaxiality of the first medium diameter section 32 and the first small diameter section 33 of the first positioning shaft 3 reaches the coaxiality requirement, which can be selected as follows: the first medium diameter section 32 and the first small diameter section 33 are processed by one-time clamping of the numerical control lathe; the inner hole of the transparent ring plate 52 is processed synchronously with the pin holes on the scale ring plate 51 and the coaxiality reaches the coaxiality requirement; the coaxiality of the inner hole of the ring-shaped pressing plate 61 and the circle where the pin holes on the outer scale disc 5 are located reaches the coaxiality requirement; the coaxiality of the second large diameter section 81 and the second small diameter section 82 on the second positioning shaft 8 reaches the coaxiality requirement, which can be selected as follows: the second large diameter section 81 and the second small diameter section 82 are processed by one-time clamping of the numerical control lathe; in the embodiment, the coaxiality requirement of each coaxiality described above is within Φ0.02mm, and the coaxiality of the assembly of the inner scale disc 4, the outer scale disc 5 and the optical direction finder (not shown in the figure) can be controlled within a higher coaxiality tolerance.

[0069] The application also provides an operation method for debugging the azimuthal compass and the optical direction finder assembled by the method.

[0070] 1. Adjust the baseline of the optical direction finder to coincide with the "0°" of the azimuthal compass;

[0071] 2. Set an analog sending device to make the 0°, 30°, 60°……(every 30°) of the inner scale disc 4 of the azimuthal compass coincide with the sighting line of the optical direction finder in sequence;

[0072] 3. Rotate the optical direction finder to make the baseline coincide with the 30°, 60°, 90°……(every 30°) scale of the outer scale disc 5 in sequence;

[0073] 4. In each position of the optical azimuth indicator, check whether the corresponding line on the inner scale 4 of the azimuth circle coincides with the sighting line of the optical azimuth indicator, and the error value should be within ±0.2°;

[0074] 5. The inductive control board (not shown in the figure, located below the inner scale 4) fixed in the shell 1 converts the angle signal indicated by the azimuth circle into an electrical signal, and displays the azimuth angle value through the externally connected digital tube.

[0075] 6. According to the design of the present application, when the motor 11 of the azimuth circle is working, the concentricity between the digital display value on the inductive control board and the mechanical rotation angle of the mechanical rotation angle (the inner scale 4, the outer scale 5, and the optical azimuth indicator) is controlled within ±0.2°.

[0076] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application and not to limit the technical solutions. Those of ordinary skill in the art should understand that modifications or equivalent replacements to the technical solutions of the present application without departing from the purpose and scope of the technical solutions should be covered in the scope of the claims of the present application.

Claims

1. A method of assembling a bearing compass, the method comprising: It comprises the following steps: ​ 1) install the motor coaxially in the shell based on the shell; 2) install the inner scale disc coaxially on the output shaft of the motor; 3) install the outer scale disc coaxially on the upper end of the shell; 4) adjust the connecting sleeve and make its inner hole concentric with the outer scale disc, and then fix the connecting sleeve on the outer scale disc; 5) install the optical azimuth instrument; Step 1) The corresponding assembly structure comprises a shell, a shaft sleeve, a positioning plate and a first positioning shaft. The upper end of the shell is cylindrical, and at least two circumferentially spaced pin holes are formed in the upper end face of the shell. An upper hole is formed in the upper end face of the shaft sleeve. A positioning hole is formed in the center of the positioning plate, and the positioning hole corresponds to the pin holes in the upper end face of the shell. The first positioning shaft comprises a first medium diameter section and a first small diameter section, which are sequentially reduced in diameter from top to bottom. The diameter of the first medium diameter section matches the diameter of the positioning hole, and the diameter of the first small diameter section matches the diameter of the upper hole in the upper end face of the shaft sleeve. The specific operation of the corresponding assembly structure in step 1) is as follows: the motor with the shaft sleeve on the output shaft is placed in the shell, the positioning plate is placed on the upper end of the shell and connected by the pin shafts, thereby ensuring the coaxiality of the positioning hole and the shell, the first positioning shaft is inserted into the positioning hole, the first medium diameter section cooperates with the positioning hole, the motor is adjusted and the upper hole on the shaft sleeve is sleeved on the first small diameter section, thereby ensuring the coaxiality of the motor and the shell, and the motor and the shell are fixedly connected; Step 2) The corresponding assembly structure comprises an inner scale disc and a pressing plate. A connecting hole is formed in the center of the inner scale disc, and a connecting ring table is formed on the upper hole of the shaft sleeve. The outer diameter of the connecting ring table matches the inner diameter of the connecting hole; The specific operation of the corresponding assembly structure in step 2) is as follows: remove the first positioning shaft, withdraw the pin shafts and remove the positioning plate, place the inner scale disc on the shaft sleeve and make the connecting ring table located in the connecting hole, thereby ensuring the coaxiality of the inner scale disc and the motor, and the pressing plate is fixed on the connecting ring table by bolts to clamp the inner scale disc; Step 3) The corresponding assembly structure comprises an outer scale disc. A pin hole corresponding to the pin hole in the upper end face of the shell is formed in the lower end face of the outer scale disc; The specific operation of the corresponding assembly structure in step 3) is as follows: place the outer scale disc on the upper end of the shell and connect it by the pin shafts, thereby ensuring the coaxiality of the outer scale disc and the shell, and the outer scale disc and the shell are fixedly connected by fasteners. Step 4) The corresponding assembly structure comprises an outer scale disc and a second positioning shaft, the outer scale disc comprises a scale ring plate and a positioning sleeve connected to the inner side of the scale ring plate, the upper end of the positioning sleeve is sleeved with a spinning sleeve and is threadedly connected, the upper end of the spinning sleeve is higher than the positioning sleeve and the inner side of the spinning sleeve is protruded to form a ring-shaped pressing plate, a connecting sleeve is abutted between the ring-shaped pressing plate and the upper end of the positioning sleeve, the inner diameter of the connecting sleeve is smaller than the inner diameters of the positioning sleeve and the ring-shaped pressing plate; the second positioning shaft comprises a second large-diameter section and a second small-diameter section which are sequentially reduced in diameter from top to bottom, the diameter of the second large-diameter section matches the inner diameter of the ring-shaped pressing plate, and the diameter of the second small-diameter section matches the inner diameter of the connecting sleeve; the specific operation of the corresponding assembly structure in step 4) is as follows: the spinning sleeve is loosened to make the connecting sleeve in an active state between the ring-shaped pressing plate and the upper end of the positioning sleeve, the second small-diameter section is inserted into the inner hole of the connecting sleeve, the second positioning shaft is adjusted until the second large-diameter section is inserted into the inner hole of the ring-shaped pressing plate, so as to ensure the coaxiality of the inner hole of the connecting sleeve and the outer scale disc, and the spinning sleeve is tightened to press and fix the connecting sleeve.

2. The method of claim 1, wherein: In the step 1), the following is ensured in advance: the circle where the pin holes on the upper end surface of the shell are located and the inner hole of the shell are machined to have a coaxiality meeting a technical requirement; the circle where the pin holes on the positioning plate are located and the positioning hole are machined to have a coaxiality meeting a technical requirement; the lower hole and the upper hole on the shaft sleeve are machined to have a coaxiality meeting a technical requirement; the first medium-diameter section and the first small-diameter section of the first positioning shaft are machined to have a coaxiality meeting a technical requirement.

3. The method of claim 2, wherein: The positioning plate comprises a positioning ring plate and a center block connected to the inner side of the positioning ring plate, the positioning hole is formed on the center block, and the center block and the positioning ring plate are connected through a plurality of spoke plates distributed in the circumferential direction.

4. The method of claim 2, wherein: In the corresponding assembly structure of the step 1), the lower surface of the positioning plate is protruded to form an outer positioning ring and an inner positioning ring, the outer positioning ring is located outside the shell, and the inner positioning ring is located inside the shell. In the step 1), the following is ensured in advance: the inner circular surface of the outer positioning ring on the positioning plate and the outer circular surface of the inner positioning ring meet a coaxiality technical requirement with the positioning hole; when the positioning plate is placed on the upper end of the shell, the upper end of the shell is first located between the outer positioning ring and the inner positioning ring to preliminarily position the positioning plate, and then the positioning plate is adjusted and connected to the shell through the pin shaft.

5. The method of claim 2, wherein: In the corresponding assembly structure of the step 1), the first positioning shaft comprises a first large-diameter section, a first medium-diameter section and a first small-diameter section which are sequentially reduced in diameter from top to bottom, and the first large-diameter section is located above the positioning plate and abuts against the positioning plate.

6. The method of claim 2, wherein: In the step 2), the following is ensured in advance: the connecting hole and the inner scale disc are machined to have a coaxiality meeting a technical requirement; the outer circular surface of the connecting ring table, the lower hole and the upper hole on the shaft sleeve are machined to have a coaxiality meeting a technical requirement.

7. The method of claim 6, wherein: In the step 3), the following is ensured in advance: the circle where the pin holes on the lower end surface of the outer scale disc are located and the outer scale disc are machined to have a coaxiality meeting a technical requirement.

8. The method of claim 7, wherein: In the step 4), the following is ensured in advance: the inner hole of the scale ring plate and the circle where the pin holes on the scale ring plate are located are machined to have a coaxiality meeting a technical requirement, the positioning sleeve, the spinning sleeve and the scale ring plate are assembled to make the inner hole of the ring-shaped pressing plate and the circle where the pin holes on the scale ring plate are located meet a coaxiality technical requirement; the first large-diameter section and the first small-diameter section of the second positioning shaft are machined to have a coaxiality meeting a technical requirement.

9. The method of claim 8, wherein: The inner side of the scale ring plate is connected with a transparent ring plate, and the positioning sleeve is connected to the inner side of the transparent ring plate, and the upper end of the positioning sleeve is higher than the transparent ring plate.

10. The method of claim 8, wherein: The specific operation of the step 5) is: taking out the second positioning shaft, inserting the connecting shaft of the optical azimuth instrument into the inner hole of the connecting sleeve, so as to ensure the coaxiality of the optical azimuth instrument and the azimuth division compass.

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