阅读说明：本技术 一种基于差动程控多齿分度台的测角仪 (Goniometer based on differential program-controlled multi-tooth dividing table ) 是由 任梦晴 王晓卿 王飞 郭志 吴昊 柯四十 于 2019-10-22 设计创作，主要内容包括：本发明公开了一种基于差动程控多齿分度台的测角仪,包括光电自准直仪、测角平台、差动程控多齿分度台、连接电缆和控制电箱,差动程控多齿分度台和光电自准直仪安装在测角平台上,差动程控多齿分度台和光电自准直仪安分别通过连接电缆与控制电箱连接；差动程控多齿分度台由台面、第一多齿分度台、第一转位电机支架、第一转位传动件、第一转位电机、第二多齿分度台、第二转位电机支架、第二转位电机、导电滑环、第一升降摇柄、第一升降电机、第一升降电机支架、第一升降传动件、第二升降摇柄、第二升降电机、第二升降电机支架、第二升降传动件组成。本发明测角精度和重复定位精度高、角度分辨率小、使用寿命长、操作方便的优点。(The invention discloses a differential program-controlled multi-tooth dividing table-based goniometer, which comprises a photoelectric autocollimator, a goniometer platform, a differential program-controlled multi-tooth dividing table, a connecting cable and a control electric box, wherein the differential program-controlled multi-tooth dividing table and the photoelectric autocollimator are arranged on the goniometer platform, and the differential program-controlled multi-tooth dividing table and the photoelectric autocollimator are respectively connected with the control electric box through the connecting cable; the differential program-controlled multi-tooth dividing table consists of a table top, a first multi-tooth dividing table, a first indexing motor support, a first indexing transmission part, a first indexing motor, a second multi-tooth dividing table, a second indexing motor support, a second indexing motor, a conductive sliding ring, a first lifting rocking handle, a first lifting motor support, a first lifting transmission part, a second lifting rocking handle, a second lifting motor support and a second lifting transmission part. The invention has the advantages of high angle measurement precision and repeated positioning precision, small angle resolution, long service life and convenient operation.)

1. The utility model provides a goniometer based on differential programme-controlled multiple tooth dividing table, includes photoelectricity autocollimator, angle measuring platform, differential programme-controlled multiple tooth dividing table, connecting cable and control electronic box, its characterized in that: the differential program-controlled multi-tooth dividing table and the photoelectric autocollimator are arranged on the angle measuring platform, the height of a light pipe of the photoelectric autocollimator is greater than the height of a table top of the differential program-controlled multi-tooth dividing table, and the differential program-controlled multi-tooth dividing table and the photoelectric autocollimator are respectively connected with the control electric box through connecting cables;

the differential program control multi-tooth dividing table consists of a table top, a first multi-tooth dividing table, a first indexing transmission part, a first indexing motor support, a first indexing motor, a second multi-tooth dividing table, a second indexing transmission part, a second indexing motor support, a second indexing motor, a conductive slip ring, a first lifting rocking handle, a first lifting motor support, a first lifting transmission part, a second lifting rocking handle, a second lifting motor support and a second lifting transmission part, wherein the table top is arranged on the upper end surface of the first multi-tooth dividing table through screws, the first multi-tooth dividing table is arranged on the upper end surface of the second multi-tooth dividing table, the excircle of the upper end surface of the first multi-tooth dividing table is calibrated to be coaxial with the excircle of the upper end surface of the second multi-tooth dividing table to be not more than mm, the glue is used for fixing the position of the first multi-tooth dividing table at the moment, and then the position of the first multi-tooth dividing table, a conductive slip ring is arranged in a middle hole of the second multi-tooth dividing table; a screw penetrates through a vertical plate of an L-shaped first indexing motor support to install the first indexing motor support on the side wall of the first multi-tooth indexing table, the first indexing motor is installed at the bottom of a transverse plate of the first indexing motor support through the screw, an output shaft of the first indexing motor upwards penetrates through the transverse plate of the first indexing motor support, a first indexing transmission piece is arranged on an output shaft of the first indexing motor, the first indexing motor and the first multi-tooth indexing table are transmitted by the first indexing transmission piece, the first lifting motor is arranged on the side wall of the first multi-tooth indexing table axially opposite to the first indexing motor by a first lifting motor support, a first lifting rocking handle is arranged at the tail end of the first lifting motor, a first lifting transmission member is arranged on an output shaft of the first lifting motor, and the first lifting motor and the first multi-tooth indexing table are transmitted through the first lifting transmission member; a screw penetrates through a vertical plate of an L-shaped second transposition motor bracket to mount the second transposition motor bracket on the side wall of the second multi-tooth indexing table, the second transposition motor is mounted at the bottom of a transverse plate of the second transposition motor bracket through the screw, an output shaft of the second transposition motor upwards penetrates through the transverse plate of the second transposition motor bracket, a second indexing transmission piece is arranged on an output shaft of a second indexing motor, the second indexing motor and a second multi-tooth indexing table are transmitted by the second indexing transmission piece, a second lifting motor is arranged on the side wall of the second multi-tooth indexing table axially opposite to the second indexing motor by a second lifting motor bracket, a second lifting rocking handle is arranged at the tail end of the second lifting motor, a second lifting transmission member is arranged on an output shaft of the second lifting motor, and the second lifting motor and the second multi-tooth indexing table are transmitted through the second lifting transmission member; wherein: the wiring of the first indexing motor and the wiring of the first lifting motor are connected to the second multi-tooth indexing table through the conductive sliding ring, and the wiring of the first indexing motor, the wiring of the first lifting motor, the wiring of the second indexing motor and the wiring of the second lifting motor are welded to an external connector together and connected with a connecting cable through the connector.

2. A differential programming-based goniometer as claimed in claim 1, wherein: the number of teeth of the first multi-tooth dividing table is 391, and the number of teeth of the second multi-tooth dividing table is 720.

3. A differential programming-based goniometer as claimed in claim 1, wherein: the first indexing motor, the second indexing motor, the first lifting motor and the second lifting motor are all direct-current stepping motors.

Technical Field

The invention relates to an angle measuring device, in particular to an angle measuring instrument based on a differential program control multi-tooth dividing table.

Background

The goniometer is an important device applied to measuring high-precision angle optical devices such as angle block gauges, multi-faceted prisms, optical prisms and the like.

In the process of processing optical angle parts (such as prisms, polygonal mirrors, pentaprisms and the like), the included angle between each surface needs to be known, if the requirement on the precision of the angle is high, the requirement on the precision of a detection instrument also needs to be high, the high-precision angle measuring instrument (such as German MOLLER and the like) in China at present is basically realized by adopting a precise optical scale matched with a self-collimating tube, the more the scales of the optical scale are, the greater the processing difficulty is, the difficulty in dividing the scales is difficult to improve, and therefore the precision of the angle measuring instrument is limited (such as the MOLLER provides the highest-precision single-time measurement error of 2 ', the multiple-time measurement average error of 6').

Disclosure of Invention

The invention aims to provide an angle measuring instrument which is high in angle measuring precision and repeated positioning precision, small in angle resolution, long in service life and convenient to operate.

The purpose of the invention is realized as follows:

the utility model provides a goniometer based on differential programme-controlled multiple tooth dividing table, includes photoelectricity autocollimator, angle measuring platform, differential programme-controlled multiple tooth dividing table, connecting cable and control electronic box, the characteristic is: the differential program-controlled multi-tooth dividing table and the photoelectric autocollimator are arranged on the angle measuring platform, the height of a light pipe of the photoelectric autocollimator is greater than the height of a table top of the differential program-controlled multi-tooth dividing table, and the differential program-controlled multi-tooth dividing table and the photoelectric autocollimator are respectively connected with the control electric box through connecting cables;

the differential program control multi-tooth dividing table consists of a table top, a first multi-tooth dividing table, a first indexing transmission part, a first indexing motor support, a first indexing motor, a second multi-tooth dividing table, a second indexing transmission part, a second indexing motor support, a second indexing motor, a conductive slip ring, a first lifting rocking handle, a first lifting motor support, a first lifting transmission part, a second lifting rocking handle, a second lifting motor support and a second lifting transmission part, wherein the table top is arranged on the upper end surface of the first multi-tooth dividing table through screws, the first multi-tooth dividing table is arranged on the upper end surface of the second multi-tooth dividing table, the excircle of the upper end surface of the first multi-tooth dividing table is calibrated to be coaxial with the excircle of the upper end surface of the second multi-tooth dividing table to be not more than mm, the glue is used for fixing the position of the first multi-tooth dividing table at the moment, and then the position of the first multi-tooth dividing table, a conductive slip ring is arranged in a middle hole of the second multi-tooth dividing table; a screw penetrates through a vertical plate of an L-shaped first indexing motor support to install the first indexing motor support on the side wall of the first multi-tooth indexing table, the first indexing motor is installed at the bottom of a transverse plate of the first indexing motor support through the screw, an output shaft of the first indexing motor upwards penetrates through the transverse plate of the first indexing motor support, a first indexing transmission piece is arranged on an output shaft of the first indexing motor, the first indexing motor and the first multi-tooth indexing table are transmitted by the first indexing transmission piece, the first lifting motor is arranged on the side wall of the first multi-tooth indexing table axially opposite to the first indexing motor by a first lifting motor support, a first lifting rocking handle is arranged at the tail end of the first lifting motor, a first lifting transmission member is arranged on an output shaft of the first lifting motor, and the first lifting motor and the first multi-tooth indexing table are transmitted through the first lifting transmission member; a screw penetrates through a vertical plate of an L-shaped second transposition motor bracket to mount the second transposition motor bracket on the side wall of the second multi-tooth indexing table, the second transposition motor is mounted at the bottom of a transverse plate of the second transposition motor bracket through the screw, an output shaft of the second transposition motor upwards penetrates through the transverse plate of the second transposition motor bracket, a second indexing transmission piece is arranged on an output shaft of a second indexing motor, the second indexing motor and a second multi-tooth indexing table are transmitted by the second indexing transmission piece, a second lifting motor is arranged on the side wall of the second multi-tooth indexing table axially opposite to the second indexing motor by a second lifting motor bracket, a second lifting rocking handle is arranged at the tail end of the second lifting motor, a second lifting transmission member is arranged on an output shaft of the second lifting motor, and the second lifting motor and the second multi-tooth indexing table are transmitted through the second lifting transmission member; wherein: the wiring of the first indexing motor and the wiring of the first lifting motor are connected to the second multi-tooth indexing table through the conductive sliding ring, and the wiring of the first indexing motor, the wiring of the first lifting motor, the wiring of the second indexing motor and the wiring of the second lifting motor are welded to an external connector together and connected with a connecting cable through the connector.

The number of teeth of the first multi-tooth dividing table is 391 teeth, the number of teeth of the second multi-tooth dividing table is 720 teeth, and rigid straight-tooth end-toothed discs are used for surface hardening and rust prevention treatment. The two are integrated to form a differential programmable multi-tooth dividing table, which is equivalent to 281520-tooth programmable multi-tooth dividing table and can provide the angle standard of minimum to 4.6 ″, and the positions of the multi-tooth dividing table corresponding to 720 and 391 in each small angle are shown in the following table 1.

Table 1 differential small angle comparison table:

the invention is composed of a photoelectric autocollimator, an angle measuring platform, a differential program-controlled multi-tooth dividing table, a connecting cable and a control electric box, wherein the differential program-controlled multi-tooth dividing table drives an upper tooth disc of a first multi-tooth dividing table to lift up and descend through a first lifting motor, the first indexing motor drives the upper tooth disc of the first multi-tooth dividing table to rotate to a specified angle position, meanwhile, the second lifting motor drives an upper tooth disc of a second multi-tooth dividing table to lift up and descend, and the second indexing motor drives the upper tooth disc of the second multi-tooth dividing table to rotate to a specified angle position; the photoelectric autocollimator and the differential program control multi-tooth dividing table are both arranged on the angle measuring platform, the control electric box directly completes the functions of angle control and angle measurement, and the angle can be directly input in the control electric box without disassembly and assembly after one-time installation, so that the measurement of an angle optical device is completed. When the device is used, the rotation angle of the differential program control multi-tooth dividing table is controlled by controlling the electric box, and the photoelectric autocollimator obtains the angle value of the measured object by emitting light and receiving light and displays the angle value through the display screen of the control electric box

Therefore, the invention has the following advantages:

1. the angle measurement precision and the repeated positioning precision are high: according to the invention, the conventional first multi-tooth dividing table and the conventional second multi-tooth dividing table both use end-toothed discs, and the corresponding average effect ensures that the angle precision of the first multi-tooth dividing table and the second multi-tooth dividing table is less than or equal to 0.2 'and the repeated positioning precision is less than or equal to 0.05';

2. the angular resolution is small: the difference between the first multi-tooth dividing table with 391 teeth and the second multi-tooth dividing table with 720 teeth is equivalent to the multi-tooth dividing table with 281520, and the minimum angle can be 4.6';

3. the service life is long: the main moving parts are a first multi-tooth dividing table and a second multi-tooth dividing table, and the tooth discs used by the first multi-tooth dividing table and the second multi-tooth dividing table cannot reduce the precision under the condition that straight teeth are worn, can still be normally used and have high reliability;

4. the operation is convenient: the invention controls the angle difference and the measurement of the angle optical device by controlling the electric box, and the result can be obtained by directly inputting the angle to be rotated on the control electric box, thus the operation is simple.

The invention is suitable for measuring and detecting the angle of the optical device in the experiment, instrument and machine manufacturing industry of scientific research and measurement departments.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a cross-sectional view of a differential programmable multi-tooth indexing table;

wherein: 1-photoelectric autocollimator; 2-angle measuring platform; 3-differential program control multi-tooth dividing table; 4-connecting a cable; 5-controlling an electric box; 301-table top; 302 — a first multi-tooth indexing table; 303 — a first indexing drive member; 304 — a first indexing motor support; 305 — a first indexing motor; 306-a second multi-tooth indexing table; 307 — a second indexing drive member; 308-a second indexing motor mount; 309-a second indexing motor; 310 — a conductive slip ring; 311-second lifting rocking handle; 312 — a second lift motor; 313-a second lifting motor support; 314 — a second lifting transmission member; 315 — first lifting rocker; 316 — a first lift motor; 317-a first lifting motor support; 318 — first lifting transmission member.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings.

A goniometer based on a differential program-controlled multi-tooth dividing table comprises a photoelectric autocollimator 1, an angle measuring platform 2, a differential program-controlled multi-tooth dividing table 3, a connecting cable 4 and a control electric box 5, wherein the differential program-controlled multi-tooth dividing table 3 and the photoelectric autocollimator 1 are arranged on the angle measuring platform 2, the height of a light pipe of the photoelectric autocollimator 1 is larger than the height of a table top of the differential program-controlled multi-tooth dividing table 3, and the movable program-controlled multi-tooth dividing table 3 and the photoelectric autocollimator 1 are respectively connected with the control electric box 5 through the connecting cable 4;

the differential program-controlled multi-tooth indexing table consists of a table top 301, a first multi-tooth indexing table 302, a first indexing transmission piece 303, a first indexing motor support 304, a first indexing motor 305, a second multi-tooth indexing table 306, a second indexing transmission piece 307, a second indexing motor support 308, a second indexing motor 309, a conductive slip ring 310, a second lifting rocking handle 311, a second lifting motor 312, a second lifting motor support 313, a second lifting transmission piece 314, a first lifting rocking handle 315, a first lifting motor 316, a first lifting motor support 317 and a first lifting transmission piece 318, wherein the table top 301 is installed on the upper end face of the first multi-tooth indexing table 302 through screws, the first multi-tooth indexing table 302 is installed on the upper end face of the second multi-tooth indexing table 306, the outer circle of the upper end face of the first multi-tooth indexing table 302 and the outer circle of the upper end face of the second multi-tooth indexing table 306 are aligned to be coaxial, so that the coaxiality of the table top 301 and the, fixing the position of the first multi-tooth indexing table 302 by using glue, then fastening the position of the first multi-tooth indexing table 302 by using a screw, and installing a conductive slip ring 310 in a middle hole of a second multi-tooth indexing table 305; screws penetrate through the vertical plate of the L-shaped first indexing motor bracket 304 to mount the first indexing motor bracket 304 on the side wall of the multi-tooth indexing table 302, the first indexing motor 305 is mounted at the bottom of the transverse plate of the first indexing motor bracket 304 through the screws, the output shaft of the first indexing motor 305 penetrates upwards through the transverse plate of the first indexing motor bracket 304, a first indexing transmission member 303 is mounted on an output shaft of the first indexing motor 304, the first indexing motor 304 and the first multi-tooth indexing table 302 are transmitted by the first indexing transmission member 303, a first lifting motor 316 is mounted on a side wall of the first multi-tooth indexing table 302 axially opposite to the first indexing motor 305 by a first lifting motor support 317, a first lifting rocking handle 315 is arranged at the tail end of the first lifting motor 316, a first lifting transmission member 318 is arranged on an output shaft of the first lifting motor 316, and the first lifting motor 316 and the first multi-tooth indexing table 302 are transmitted through the first lifting transmission member 314; screws penetrate through the vertical plate of the L-shaped second indexing motor bracket 308 to mount the second indexing motor bracket 308 on the side wall of the second multi-tooth indexing table 306, the second indexing motor 309 is mounted at the bottom of the transverse plate of the second indexing motor bracket 308 through the screws, the output shaft of the second indexing motor 309 penetrates upwards through the transverse plate of the second indexing motor bracket 308, a second indexing transmission member 307 is mounted on an output shaft of a second indexing motor 309, the second indexing motor 309 and the second multi-tooth indexing table 306 are transmitted by the second indexing transmission member 307, a second lifting motor 312 is mounted on a side wall of the second multi-tooth indexing table 306 axially opposite to the second indexing motor 309 by a second lifting motor support 313, a second lifting rocking handle 311 is arranged at the tail end of the second lifting motor 312, a second lifting transmission piece 314 is arranged on an output shaft of the second lifting motor 312, and the second lifting motor 312 and the second multi-tooth dividing table 306 are transmitted through the second lifting transmission piece 314; wherein: the connection of the first indexing motor 305 and the connection of the first lifting motor 316 are connected to the second multi-tooth indexing table 306 through the conductive slip ring 310, and the connection of the first indexing motor 305 and the connection of the first lifting motor 316, the connection of the second indexing motor 309 and the connection of the second lifting motor 312 are welded to an external connector and connected to the connecting cable 4 through the connectors.

The number of teeth of the first multi-tooth dividing table is 391 teeth, the number of teeth of the second multi-tooth dividing table is 720 teeth, and rigid straight-tooth end-toothed discs are used for surface hardening and rust prevention treatment. First indexing motor 305, second indexing motor 309, first lift motor 316, and second lift motor 312 are dc stepper motors.

When the device is used, the rotation angle of the differential program control multi-tooth dividing table 3 is controlled by controlling the electric box 5, and the photoelectric autocollimator 1 obtains the angle value of the measured object by emitting light and receiving light and displays the angle value through the display screen of the control electric box 5.

After the superstructure of the first multi-tooth indexing table 302 is lifted up and reaches a designated height, the first indexing motor 305 drives the superstructure of the first multi-tooth indexing table 302 to rotate through the first indexing transmission member 303, and the first lifting motor 316 drives the superstructure of the first multi-tooth indexing table 302 to be lifted up and lowered through the first lifting transmission member 317; after the superstructure of the second multi-tooth indexing table 306 is raised and reaches the designated position, the second indexing motor 309 rotates the superstructure of the second multi-tooth indexing table 305 via the second indexing drive 307, and the second lift motor 312 raises and lowers the superstructure of the second multi-tooth indexing table 306 via the second lift drive 311.

The working principle is as follows: placing optical angle parts (such as a prism, a polygonal mirror, a pentaprism and the like) to be measured on a table board 301, adjusting the angle position of the optical angle part to be measured by a photoelectric autocollimator 1 until the angle position of a first measured surface is within the range of 0 +/-20', then displaying the value of M on a control electric box 5, inputting the angle value X on the control electric box 5, rotating a differential program-controlled multi-tooth dividing table 3 to a specified angle X under the driving of a first indexing motor 305, a second indexing motor 309, a first lifting motor 316 and a second lifting motor 312, measuring the angle of a second measured surface of the optical angle part at the time by the photoelectric autocollimator 1, displaying the value of N on the control electric box, then the angle value between the first measured surface and the second measured surface is X + N-M, continuing the above steps, measuring other measured surfaces of the optical angle part to be measured until all the angle values of the required measured surfaces are obtained, and finishing the angle measurement.