Deep hole helix winding angle measuring device and measuring method

Abstract

The application discloses a deep hole helical wire winding angle measuring device, which comprises a measuring device and a measuring equipment, and the measuring device and the measuring equipment are connected through a cable; the measuring equipment comprises a shell, a rack, a driving assembly and a measuring assembly, the rack, the driving assembly and the measuring assembly are installed in the shell, and the driving assembly and the measuring assembly are installed on the rack. The application further discloses a deep hole helical wire winding angle measuring method. The application can realize high-efficiency and high-precision measurement of the deep hole helical wire winding angle.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of measurement, and particularly relates to a deep hole helical line winding angle measuring device and a measuring method. BACKGROUND

[0002] The deep hole helical line processing method is to drive a main shaft along the linear motion of the X direction and the rotation around the X shaft of a numerical control wire drawing machine tool according to the programmed helical curve program motion, so as to process the deep hole helical groove, and further form the helical line winding angle.

[0003] The winding angle is the angle of the tangent of a point on the rifling (the deep hole helical line after processing is the rifling) relative to the inner bore axis after the rifling is unfolded. The method for measuring the winding degree and the winding angle is as follows:

[0004] 1. Measure the winding distance: rotate the winding degree rifling around the inner bore for one round, and the distance in the axial direction, that is, the lead of the helical line, is denoted by L.

[0005] 2. Measure the diameter: measure the diameter of the projectile or the warhead by using a measuring tool, and the unit is inch.

[0006] 3. Calculate the winding angle: calculate the winding angle by using the arctan function, and the formula is degree = arctan (Pix diameter / winding distance), wherein the diameter and the winding distance are both in inch.

[0007] The current detection means is to use a laser interferometer, a collimator, a 24-face prism and other detection instruments, and necessary special gauges and auxiliary tools, to measure a plurality of points on the actual helical line on the numerical control wire drawing machine, calculate the X coordinate values of the measurement points, and since the 24-face prism is used, the angles between the points are all 15°, which is the actual β angle value. Then, the theoretical rotation angles between the points are calculated according to the helical line winding angle calculation formula. The maximum rotation angle error is calculated by the theoretical rotation angle and the actual rotation angle, and the precision error of the helical line winding angle is indirectly reflected.

[0008] The existing measurement method requires a higher professional level of the detection personnel, the measurement data needs to be processed and calculated twice, the operation is complex, the detection period is long, and the consistency is poor. SUMMARY

[0009] The present application belongs to the technical field of measurement, and particularly relates to a deep hole helical line winding angle measuring device and a measuring method.

[0010] To achieve the above-mentioned purpose, the technical solution used by the present application is:

[0011] The deep hole helix winding angle measuring device comprises a measuring device and a measuring equipment, and the measuring device and the measuring equipment are connected through a cable; the measuring equipment comprises a shell, a rack, a driving assembly and a measuring assembly, the rack, the driving assembly and the measuring assembly are installed inside the shell, the driving assembly and the measuring assembly are installed on the rack; the shell is provided with a front end cover and a rear end cover at two ends respectively, the front end cover is provided with a front end cover fixing hole and a front end cover long hole, the rear end cover is provided with a plurality of cable insertion holes and a rear end cover fixing hole, a plurality of pairs of through grooves are arranged on the upper part and the lower part of the shell respectively, a plurality of arc long holes are arranged on the front part and the rear part of the shell respectively; the measuring assembly comprises a sensor Ra, a sensor Rb, a laser range finder, a baffle and a connecting rod; the rack is provided with a servo turntable at the front part, the servo turntable is provided with a servo motor inside, and the rear part is provided with a positioning disc; a plurality of copper studs are arranged on the front part of the rack and the rear part of the positioning disc respectively; the servo turntable is provided with a first rotating shaft hole in the middle part, and the positioning disc is provided with a second rotating shaft hole in the middle part; a C shaft is sleeved in the first rotating shaft hole and the second rotating shaft hole, the two ends of the C shaft are connected with the sensor Ra and the sensor Rb respectively, and the C shaft is connected with the rotating shaft of the servo motor; the sensor Ra is provided with a Ra shaft, the sensor Rb is provided with a Rb shaft, and the ends of the Ra shaft and the Rb shaft respectively extend out of the arc long hole; the rack is provided with a laser range finder at the side part, the laser range finder is provided with a laser probe at the front end, the baffle is located at the front part of the front end cover, the baffle is provided with a baffle through hole, the connecting rod is arranged in the baffle through hole at the front end and is threadedly connected at the front end of the laser range finder through the front end cover long hole at the rear end; the driving assembly comprises a walking motor, a driving wheel, a driven wheel, a tensioning support, a tensioning wheel, a torsion spring and a wheel frame, the driving wheel and the driven wheel are respectively installed on the lower part of the rack, and the rotating shaft of the walking motor is connected with the rotating shaft of the driving wheel; the tensioning support is connected on the upper part of the rack, the lower parts of a plurality of wheel frames are hinged on the tensioning support, the tensioning wheel is installed on the upper part of the wheel frame, and the torsion spring is installed between the wheel frame and the tensioning support; the driving wheel, the driven wheel and the tensioning wheel extend out of the through groove, and the plurality of copper studs are connected with the front end cover and the rear end cover through the front end cover fixing hole and the rear end cover fixing hole respectively.

[0012] Further, the measuring device, the measuring equipment and the cable are placed in the box body, a radiator is installed in the box body, the radiator is connected at the side part of the measuring device, and a box cover is hinged at the side edge of the box body.

[0013] Further, the C shaft is perpendicular to the Ra shaft and the Rb shaft respectively.

[0014] Further, the cable insertion hole used as a power interface is connected with the power supply end of the walking motor, the servo motor, the sensor Ra, the sensor Rb and the laser range finder through a wire, the cable insertion hole used as a signal interface is connected with the signal output end of the sensor Ra, the sensor Rb and the laser range finder through a wire, and the signal line and the power line in the cable are respectively connected with the corresponding cable insertion hole through a plug.

[0015] Further, the multiple arc-shaped long holes in the front part of the shell are located on the same circumference, and the multiple arc-shaped long holes in the rear part are located on the same circumference.

[0016] Further, the multiple copper studs in the front part of the rack are located outside the servo turntable, and the multiple copper studs in the rear end surface of the positioning disc are located at the edge of the positioning disc.

[0017] The method comprises the following steps:

[0018] The connecting cable between the measuring device and the measuring equipment is screwed through the long hole in the front end cover to the front end of the laser range finder, the baffle is fixed to one end of the steel pipe, the measuring equipment is pushed into the steel pipe, and the front end of the connecting rod passes through the through hole of the baffle.

[0019] A plurality of measurement sections of the steel pipe are set on the measuring device, the walking motor, the servo motor, the sensor Ra, the sensor Rb, and the laser range finder are powered on, the walking motor drives the driving wheel to rotate, the driving wheel drives the measuring equipment to move to the first measurement section, the ends of the Ra shaft and the Rb shaft are located on the spiral line, and the laser probe of the laser range finder measures the position of the baffle.

[0020] The driving wheel drives the measuring equipment to move to the second measurement section, the servo motor of the servo turntable drives the C shaft to rotate, the C shaft drives the sensor Ra and the sensor Rb to rotate, the Ra shaft and the Rb shaft slide on the spiral line, the sensor Ra and the sensor Rb measure the rotation angle from the first measurement section to the second measurement section, and the rotation angle value is sent to the measuring device; the laser range finder sends the moving distance value from the first measurement section to the second measurement section to the measuring device; and the spiral winding angle is obtained according to the rotation angle and the moving distance between the plurality of measurement sections.

[0021] Preferably, the driving wheel, the driven wheel, and the tensioning wheel of the driving assembly are respectively abutted on the inner wall of the steel pipe on the upper and lower sides to position the measuring equipment in the steel pipe; the cable insertion hole of the rear end cover is connected with the cable, and the cable is connected to the measuring device from the steel pipe.

[0022] Preferably, the laser emitted by the laser probe passes through the long hole in the front end cover and irradiates on the baffle to measure the distance between the measurement sections and the position of the measurement section.

[0023] Preferably, if the second measurement section is not the last measurement section, the driving wheel drives the measuring equipment to continue to move to the next measurement section, and the measurement process is repeated; if the measurement section is the last measurement section, the measurement is completed, and the measuring equipment is controlled to move out of the steel pipe.

[0024] The technical effects of the present application include:

[0025] The use of the application can realize efficient and high-precision measurement of deep hole helical winding angle. The rack supports and fixes the driving assembly and the measuring assembly, realizes measurement of the measuring device on different positions of the steel pipe, the C-R shaft measuring mechanism measures the coaxial deflection angle of the steel pipe, and the Z-axis measuring mechanism measures the depth of the steel pipe.

[0026] The C-R shaft measuring mechanism is composed of a servo turntable, a C shaft, a sensor Ra, a sensor Rb, a Ra shaft and a Rb shaft. The servo turntable is used to drive the C shaft, the sensor Ra and the sensor Rb are installed at both ends of the C shaft, the Ra shaft is arranged on the upper part of the sensor Ra, and the Rb shaft is arranged on the upper part of the sensor Rb, so as to ensure the geometric quantity of C-R coaxial measurement of helical winding angle.

[0027] The Z-axis measuring mechanism is composed of a laser range finder, a connecting rod, a baffle and a driven wheel. The end close to the laser probe is provided with a baffle through the connecting rod, so as to facilitate the laser probe to measure the different depths of the steel pipe.

[0028] The upper part of the rack is provided with a tensioning wheel and a torsion spring, so that when the measuring device is placed in the steel pipe, the tensioning wheel extrudes the inner wall of the steel pipe, and the measuring device is stably installed in the steel pipe. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is the overall structure schematic diagram of the deep hole helical winding angle measuring device in the application;

[0030] Figure 2 is the overall structure schematic diagram of the measuring device in the application;

[0031] Figure 3 is the internal structure schematic diagram of the measuring device in the application Figure 1 ;

[0032] Figure 4 is the internal structure schematic diagram of the measuring device in the application Figure 2 ;

[0033] Figure 5 is the schematic diagram of the measuring device in the application located in the steel pipe;

[0034] Figure 6 is the working state schematic diagram of the driving assembly and the measuring assembly in the application. DETAILED DESCRIPTION

[0035] The following description fully shows the specific embodiments of the application, so that those skilled in the art can practice and reproduce.

[0036] As Figure 1 shown, it is the overall structure schematic diagram of the deep hole helical winding angle measuring device in the application.

[0037] The deep hole helical winding angle measuring device comprises a measuring device 1, a measuring equipment 2, and the measuring device 1 and the measuring equipment 2 are electrically connected through a wire 3.

[0038] In order to facilitate carrying, the measuring device 1, the measuring equipment 2 and the cable 3 are placed in a box body 4.

[0039] The measuring device 1 is equivalent to an industrial computer, and is used for monitoring and controlling the running state of the electromechanical equipment. The measuring device 1 has a computer CPU, a hard disk, a memory, peripherals and interfaces, and has an operating system, a control network and protocol, a computing capacity, and a friendly man-machine interface.

[0040] The measuring device 1 is powered by an external power supply, or a storage battery is arranged in the box body 4, and the measuring device 1 is powered by the storage battery.

[0041] A radiator for heat dissipation is also installed in the box body 4, the radiator is connected to the side of the measuring device 1, and the radiator is used for dissipating heat of elements of the measuring device 1; a box cover 41 is hinged to the side of the box body 4.

[0042] As shown in Figure 2 , it is the overall structure schematic diagram of the measuring equipment 2 in the application; as shown in Figure 3 , it is the internal structure schematic diagram of the measuring equipment 2 in the application Figure 1 ; as shown in Figure 4 , it is the internal structure schematic diagram of the measuring equipment 2 in the application Figure 2 .

[0043] The measuring equipment 2 comprises a shell 21, a rack 22, a driving assembly 23 and a measuring assembly 24, the rack 22, the driving assembly 23 and the measuring assembly 24 are installed inside the shell 21, and the driving assembly 23 and the measuring assembly 24 are installed in the rack 22; the driving assembly 23 is used for driving the measuring equipment 2 to move, and the measuring assembly 24 is used for measuring the helical winding angle of the steel pipe 5.

[0044] The shell 21 is respectively provided with a front end cover 211 and a rear end cover 212 at two ends, the front end cover 211 is provided with a front end cover fixing hole and a front end cover long hole 2111, the rear end cover 212 is provided with a plurality of cable insertion holes 2121 and a rear end cover fixing hole, the upper part and the lower part of the shell 21 are respectively provided with two pairs of through grooves 213, and the front part and the rear part of the shell 21 are respectively provided with a plurality of arc long holes 214.

[0045] The front part of the rack 22 is provided with a servo turntable 221, the inside of the servo turntable 221 is provided with a servo motor, and the rear part is provided with a positioning disc 222; the front part of the rack 22 and the rear part of the positioning disc 222 are respectively provided with a plurality of copper studs 226; the middle part of the servo turntable 221 is provided with a first rotating shaft hole, and the middle part of the positioning disc 222 is provided with a second rotating shaft hole; the C shaft 223 is sleeved in the first rotating shaft hole and the second rotating shaft hole, and the two ends of the C shaft 223 are respectively connected with a sensor Ra 241 and a sensor Rb 242, and the C shaft 223 is connected with the rotating shaft of the servo motor; the sensor Ra 241 is provided with a Ra shaft 2411, and the sensor Rb 242 is provided with an Rb shaft 2421; the side part of the rack 22 is provided with a laser range finder 243, the front end of the laser range finder 243 is provided with a laser probe 2431, a baffle 2433 is located in the front part of the front end cover 211, the baffle 2433 is provided with a baffle through hole, a connecting rod 2432 is arranged in the baffle through hole, and the rear end of the connecting rod 2432 is threadedly connected to the front end of the laser range finder 243 through the front end cover long hole 2111; during measurement, the baffle 2433 is fixed in the steel pipe 5; the driving assembly 23 comprises a walking motor 231, a driving wheel 232, a driven wheel 233, a tensioning support 234, a tensioning wheel 235, a torsion spring 236 and a wheel frame 237; the driving wheel 232 and the driven wheel 233 are respectively installed on the lower part of the rack 22, and the rotating shaft of the walking motor 231 is connected with the rotating shaft of the driving wheel 232; the tensioning support 234 is connected to the upper part of the rack 22, the lower parts of the two wheel frames 237 are hinged to the tensioning support 234, the tensioning wheel 235 is installed on the upper part of the wheel frame 237, and the torsion spring 236 is installed between the wheel frame 237 and the tensioning support 234; the ends of the Ra shaft 2411 and the Rb shaft 2421 respectively extend out of the arc-shaped long hole 214, and the driving wheel 232, the driven wheel 233 and the tensioning wheel 235 extend out of the through groove 213; the copper studs 226 respectively pass through the front end cover fixing hole and the rear end cover fixing hole, and the nuts are connected to the copper studs 226, so that the front end cover 211 and the rear end cover 212 are respectively fixed to the two ends of the shell 21.

[0046] The cable jack 2121 used as the power interface is connected with the power supply ends of the walking motor 231, the servo motor, the sensor Ra 241, the sensor Rb 242 and the laser range finder 243 through wires; the cable jack 2121 used as the signal interface is connected with the signal output ends of the sensor Ra 241, the sensor Rb 242 and the laser range finder 243 through wires; the signal lines and the power supply lines in the cable 3 are respectively connected with the corresponding cable jacks through plugs. The C shaft 223 is perpendicular to the Ra shaft 2411 and the Rb shaft 2421.

[0047] The multiple arc-shaped long holes in the front part of the shell 21 are located on the same circumference, and the multiple arc-shaped long holes in the rear part are located on the same circumference.

[0048] The plurality of copper studs 226 in the front part of the rack 22 are located outside the servo turntable 221, and the plurality of copper studs 226 in the rear end surface of the positioning disc 222 are located at the edge of the positioning disc 222.

[0049] In this embodiment, the servo turntable 221, the C-axis 223, the sensor Ra 241, the sensor Rb 242, the Ra-axis 2411, and the Rb-axis 2421 belong to the measurement assembly 24, and are used for C-R axial direction rotation angle measurement; the servo turntable 221 drives the C-axis 223 to rotate, the sensor Ra 241, the sensor Rb 242, the Ra-axis 2411, and the Rb-axis 2421 rotate synchronously with the C-axis 223, and the end parts of the Ra-axis 2411 and the Rb-axis 2421 abut on the helical line. The sensor Ra 241, the sensor Rb 242, the Ra-axis 2411, and the Rb-axis 2421 installed at both ends of the C-axis 223 ensure C-R coaxial measurement of the helical line rotation angle.

[0050] In this embodiment, the laser range finder 243, the connecting rod 2432, and the baffle 2433 belong to the measurement assembly 24, and are used for measuring the travel distance in the Z-axis direction. The laser probe 2431 realizes measurement of the measurement device 2 at different depths of the steel pipe 3 by detecting the relative position change of the laser range finder 243 (measurement equipment 2) and the baffle 2433.

[0051] In this embodiment, the walking unit is composed of the walking motor 231, the driving wheel 232, and the driven wheel 233. The walking motor 231 is electrified to rotate, the driving wheel 232 moves the measurement device 2 in the steel pipe 5, and the measurement device 2 is also supported by the driven wheel 233. The driving wheel 232 and the driven wheel 233 are in contact with the inner wall of the steel pipe 5, and the tensioning wheel 235 is in contact with the inner wall of the steel pipe 5, so as to realize the purpose of moving the measurement device 2 in the steel pipe 5 through the walking unit.

[0052] As shown in FIG. 1, it is a schematic diagram of the measurement device 2 in the steel pipe 5 in the present application; as shown in FIG. 2, it is a working state schematic diagram of the driving assembly 23 and the measurement assembly 24 in the present application. Figure 5 Figure 6

[0053] The deep hole helical line winding angle measurement method comprises the following specific steps:

[0054] Step 1: connect the connecting cable 3 between the measurement device 1 and the measurement equipment 2, screw the rear end of the connecting rod 2432 through the long hole 2111 of the front end cover to the front end of the laser range finder 243, fix the baffle 2433 at one end of the steel pipe 5, push the measurement equipment 2 into the steel pipe 5, and pass the front end of the connecting rod 2432 through the through hole of the baffle;

[0055] ​​The driving wheel 232, the driven wheel 233 and the tensioning wheel 235 of the driving assembly 23 abut against the inner wall of the steel pipe 5 on both sides to position the measuring device 2 in the steel pipe 5; the cable insertion hole 2121 of the rear end cover 212 is connected with the cable 3, and the cable 3 is connected to the measuring device 1 from the steel pipe 5.

[0056] Step 2: A plurality of measuring sections of the steel pipe 5 are set on the measuring device 1, the walking motor 231, the servo motor, the sensor Ra 241, the sensor Rb 242 and the laser range finder 243 are powered on, the walking motor 231 drives the driving wheel 232 to rotate, the driving wheel 232 drives the measuring device 2 to move to the first measuring section, the ends of the Ra shaft 2411 and the Rb shaft 2421 are located on the spiral line, and the laser probe 2431 of the laser range finder 243 measures the position of the baffle 2433.

[0057] The laser emitted by the laser probe 2431 passes through the long hole 2111 of the front end cover and irradiates on the baffle 2433 to measure the distance.

[0058] Step 3: The driving wheel 232 drives the measuring device 2 to move to the second measuring section, the servo motor of the servo turntable 221 drives the C shaft 223 to rotate, the C shaft 223 drives the sensor Ra 241 and the sensor Rb 242 to rotate, and the Ra shaft 2411 and the Rb shaft 2421 slide on the spiral line; the sensor Ra 241 and the sensor Rb 242 measure the rotation angle from the first measuring section to the second measuring section and send the rotation angle value to the measuring device 1; the laser range finder 243 sends the moving distance value from the first measuring section to the second measuring section to the measuring device 1.

[0059] If the second measuring section is not the last measuring section, the driving wheel 232 drives the measuring device 2 to continue to move to the next measuring section, and the measuring process of step 3 is repeated; if the measuring section is the last measuring section, the measurement is completed, and the measuring device 2 is controlled to move out of the steel pipe 5.

[0060] The rotation angle is the rotation angle in the C-R shaft direction, and the moving distance is the moving distance in the Z axis direction.

[0061] Step 4: The spiral line winding angle is obtained according to the rotation angle and the moving distance between the plurality of measuring sections.

[0062] The terms used in the present application are illustrative and exemplary, but not limiting terms. Since the present application can be embodied in various forms without departing from the spirit or essential characteristics of the technical solution, it should be understood that the above embodiments are not limited to any of the above details, but should be interpreted broadly within the spirit and scope of the appended claims, and therefore all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A deep hole helix wrap angle measuring device, characterized by, Include: Measuring device, measuring equipment, measuring device, measuring equipment through cable connection; Measuring equipment includes: shell, rack, drive assembly and measuring assembly, rack, drive assembly and measuring assembly are installed inside the shell, drive assembly and measuring assembly are installed on the rack; The both ends of the shell are respectively provided with front end cover and rear end cover, the front end cover is provided with front end cover fixing hole and front end cover long hole, the rear end cover is provided with a plurality of cable insertion holes and rear end cover fixing hole, the upper and lower parts of the shell are respectively provided with a plurality of pairs of through slots, the front and rear parts of the shell are respectively provided with a plurality of arc long holes; The measuring assembly includes: sensor Ra, sensor Rb, laser range finder, baffle, connecting rod; The front part of the rack is provided with a servo turntable, the inside of the servo turntable is provided with a servo motor, and the rear part is provided with a positioning disc; The front part of the rack and the rear part of the positioning disc are respectively provided with a plurality of copper studs; The middle part of the servo turntable is provided with a first rotating shaft hole, and the middle part of the positioning disc is provided with a second rotating shaft hole; The C shaft is sleeved in the first rotating shaft hole and the second rotating shaft hole, and the both ends of the C shaft are respectively connected with the sensor Ra and the sensor Rb, and the C shaft is connected with the rotating shaft of the servo motor; The sensor Ra is provided with Ra shaft, and the sensor Rb is provided with Rb shaft, and the ends of the Ra shaft and the Rb shaft respectively extend out of the arc long hole; The side of the rack is provided with a laser range finder, the front end of the laser range finder is provided with a laser probe, the baffle is located in the front part of the front end cover, the baffle is provided with a baffle through hole, the front end of the connecting rod is threaded in the baffle through hole, and the rear end is threaded in the front end cover long hole and connected with the front end of the laser range finder; The drive assembly includes: walking motor, drive wheel, driven wheel, tensioning support, tensioning wheel, torsion spring and wheel frame, the drive wheel and the driven wheel are respectively installed on the lower part of the rack, and the rotating shaft of the walking motor is connected with the rotating shaft of the drive wheel; The tensioning support is connected on the upper part of the rack, the lower parts of the plurality of wheel frames are hinged on the tensioning support, the tensioning wheel is installed on the upper part of the wheel frame, and the torsion spring is installed between the wheel frame and the tensioning support; The drive wheel, the driven wheel and the tensioning wheel extend out of the through slot, and the plurality of copper studs are connected with the front end cover and the rear end cover through the front end cover fixing hole and the rear end cover fixing hole.

2. The deep hole helix wrap angle measuring device of claim 1, wherein, The measuring device, the measuring equipment and the cable are placed in the box body, the radiator is installed in the box body, the radiator is connected with the side of the measuring device, and the side of the box body is hinged with the box cover.

3. The deep hole helix wrap angle measuring device of claim 1, wherein, The C shaft is perpendicular to the Ra shaft and the Rb shaft.

4. The deep hole helix wrap angle measuring device of claim 1, wherein, The cable insertion hole used as the power interface is connected with the power supply end of the walking motor, the servo motor, the sensor Ra, the sensor Rb and the laser range finder through the wire, the cable insertion hole used as the signal interface is connected with the signal output end of the sensor Ra, the sensor Rb and the laser range finder through the wire, and the signal line and the power line in the cable are respectively connected with the corresponding cable insertion hole through the plug.

5. The deep hole helix wrap angle measuring device of claim 1, wherein, The plurality of arc long holes in the front part of the shell are located on the same circumference, and the plurality of arc long holes in the rear part are located on the same circumference.

6. The deep hole helix wrap angle measuring device of claim 1, wherein, The plurality of copper studs in the front part of the rack are located outside the servo turntable, and the plurality of copper studs on the end surface of the rear part of the positioning disc are located at the edge of the positioning disc.

7. The method of measuring the helix wrap angle of a deep hole helix according to any one of claims 1 to 6, wherein Include: The connecting cable between the measuring device and the measuring equipment is connected, the rear end of the connecting rod is threaded in the front end cover long hole and connected with the front end of the laser range finder, the baffle is fixed on one end of the steel pipe, the measuring equipment is pushed into the steel pipe, and the front end of the connecting rod is threaded in the baffle through hole; The multiple measurement sections of the steel pipe are set on the measuring device, the walking motor, the servo motor, the sensor Ra, the sensor Rb and the laser range finder are powered on, the walking motor drives the driving wheel to rotate, the driving wheel drives the measuring device to move to the first measurement section, the ends of the Ra axis and the Rb axis are located on the helix, and the laser probe of the laser range finder measures the position of the baffle; The driving wheel drives the measuring device to move to the second measurement section, the servo motor of the servo turntable drives the C shaft to rotate, the C shaft drives the sensor Ra and the sensor Rb to rotate, the Ra axis and the Rb axis slide on the helix, the sensor Ra and the sensor Rb measure the rotation angle from the first measurement section to the second measurement section, and the rotation angle value is sent to the measuring device, the laser range finder sends the moving distance value from the first measurement section to the second measurement section to the measuring device, and the winding angle of the helix is obtained according to the rotation angle and the moving distance between the multiple measurement sections.

8. The method of claim 7, wherein the angle is measured by the formula: ###0001### 8 The driving wheel, the driven wheel and the tensioner of the driving assembly are respectively arranged on the inner wall of the steel pipe on the upper and lower sides, so as to position the measuring device in the steel pipe; the cable insertion hole of the rear end cover is connected with the cable, and the cable is connected to the measuring device.

9. The deep hole helix wrap angle measurement method of claim 7 wherein, The laser emitted by the laser probe passes through the long hole of the front end cover and irradiates on the baffle, so as to measure the distance between the measurement sections and the position of the measurement section.

10. The method of claim 7, wherein the angle is measured by a deep hole helix winding angle measurement method, characterized by, If the second measurement section is not the last measurement section, the driving wheel drives the measuring device to continue to move to the next measurement section, and the measurement process is repeated; if the measurement section is the last measurement section, the measurement is completed, and the measuring device is controlled to move out of the steel pipe.

Images