Portable Gear Tooth Profile Surveying Device

Abstract

The present invention discloses a portable gear tooth profile surveying device, belonging to the technical field of mechanical engineering surveying and mapping. The present invention includes a support assembly, on which a main machine box is provided. The main machine box is connected to a probe box through a telescopic assembly. The probe box includes a box body, and a channel is opened on the box body. A probe plate and a probe fixed on the probe plate are arranged in the channel. The probe has a head end and a tail end. The head end is close to the support assembly, and the tail end sequentially passes through the probe plate and the box body and protrudes from the outer wall of the box body. The probe plate is connected to the inner wall of the box body through an elastic member, so that the probe plate can drive the probe to move along the axial direction of the channel in the channel. A distance sensor is also arranged in the channel, and the distance sensor is electrically connected to a single-chip microcomputer arranged in the main machine box. The device in the present invention has good portability and can accurately survey the tooth profile of a gear.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical engineering surveying and mapping, and particularly relates to a portable gear tooth profile surveying and mapping device. Background Art

[0002] With the large-scale and heavy-duty development of domestic mechanical equipment, the application of large gear tooth profile measurement technology has become extremely important. Currently, there are mainly three tooth profile surveying and mapping methods as follows: 1. Manual surveying and mapping can roughly obtain the tooth profile of large gears, but the measurement data has large errors, and the obtained data has low practicality; 2. Laser scanner surveying and mapping can accurately obtain partial point cloud data of large gears. However, since the laser scanning cannot scan the bottom position of the gear teeth, the point cloud data is incomplete, and it is impossible to use software to complete the fitting of the tooth profile curve; 3. Contact type tooth profile instrument surveying and mapping has high surveying and mapping accuracy and fully meets the requirements of tooth profile surveying and mapping. However, different specifications of tooth profile instruments have their corresponding measurement ranges. Currently, tooth profile instruments are generally applicable to gears with a pitch circle diameter of less than 1000 mm, and large gears with a pitch circle diameter greater than 1000 mm cannot be measured.

[0003] Regarding the measurement of large gears, a patent application with the application number 201010545735.4 provides a large gear measuring instrument. This measuring instrument can measure large gears, but its overall volume is large. In order to increase the measurement range, it is necessary to increase the size of the rotary table base, thereby increasing the volume of the gear measuring instrument, making it not easy to move and having a high cost. Summary of the Invention

[0004] In view of the above deficiencies, the present invention provides a portable gear tooth profile surveying and mapping device, which can survey and map the tooth profile of large gears and has a small volume and is easy to carry.

[0005] The present invention protects a portable gear tooth profile surveying device, which includes a support assembly that can be detachably clamped in the gear hole of the gear to be measured. A mainframe box is provided on the support assembly, and the mainframe box can rotate relative to the support assembly. The mainframe box is connected to a probe box through a telescopic assembly, and the telescopic assembly can move the probe box closer to or farther away from the mainframe box. The probe box includes a box body, and a channel is opened on the box body. A probe plate and probes fixed on the probe plate are arranged in the channel. Each probe has a head end and a tail end. The head end is close to the support assembly and can contact the tooth of the gear to be measured. The tail end sequentially passes through the probe plate and the box body and protrudes from the outer wall of the box body. The probe plate is connected to the inner wall of the box body through an elastic member, so that the probe plate can drive the probe to move axially in the channel. A distance sensor is also arranged in the channel for measuring the moving distance of the probe plate, and the distance sensor is electrically connected to a single-chip microcomputer arranged in the mainframe box.

[0006] Further, the central axis of the channel is perpendicular to the central axis of the support assembly; the elastic member is a spring, and the spring is sleeved on the probe.

[0007] Further, the telescopic assembly includes a third-stage telescopic rod, and a second-stage telescopic rod is sleeved outside the third-stage telescopic rod. The third-stage telescopic rod can extend or retract into the second-stage telescopic rod; a first-stage telescopic rod is sleeved outside the second-stage telescopic rod, and the second-stage telescopic rod can extend or retract into the first-stage telescopic rod.

[0008] Further, first limiting frames and second limiting frames are respectively arranged at both ends of the first-stage telescopic rod. A first knob is arranged on the second limiting frame, and tightening the first knob can fix the second-stage telescopic rod relative to the first-stage telescopic rod; a third limiting frame is arranged outside the second-stage telescopic rod, and a second knob is arranged on the third limiting frame, and tightening the second knob can fix the third-stage telescopic rod relative to the second-stage telescopic rod.

[0009] Further, scale lines are arranged on the first-stage telescopic rod, the second-stage telescopic rod, and the third-stage telescopic rod.

[0010] Further, the mainframe box includes a bottom shell, and the bottom shell is connected to an outer shell above to form a sealed space. An electronic speed controller is arranged in the sealed space. The electronic speed controller is electrically connected to a servo motor and the single-chip microcomputer respectively. The servo motor is connected to a battery, and a key and a touch display screen are arranged on the outer shell; the key, the touch display screen, and the servo motor are all electrically connected to the single-chip microcomputer.

[0011] Further, the support assembly includes a three-jaw chuck, and the three-jaw chuck can be detachably connected to the gear to be measured.

[0012] Furthermore, a welding nut is provided on the three-jaw chuck, and the shaft end of the servo motor is a threaded end, and the threaded end is threadably matched with the welding nut.

[0013] Beneficial effects:

[0014] The present invention provides a support component that can be detachably set in the gear hole of the gear to be measured, and uses the gear to be measured as a base, thereby reducing the size of the surveying and mapping device itself and improving portability. By providing a telescopic component, the distance between the probe box and the main box can be adjusted, which is used to survey gears of different sizes and realize the tooth shape measurement of large-sized gears. By providing a probe, the probe head contacts the gear teeth of the gear to be measured, and the main box is rotated. The probe drives the probe plate to move, and the distance sensor records the moving distance and transmits it to the single-chip microcomputer. The elastic member can provide elastic force to make the probe head press against the gear teeth. The device of the present invention has good portability and can accurately survey the tooth shape of the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of a portable gear tooth profile measuring device in one embodiment of the present invention.

[0016] Figure 2 for Figure 1 Top view of the .

[0017] Figure 3 for Figure 2 Cross-sectional view along the AA direction.

[0018] Figure 4 for Figure 3 A partial enlarged view of part B.

[0019] Figure 5 for Figure 1 Bottom view of .

[0020] Figure 6 The figure is a schematic diagram of the operation of the portable gear tooth profile measuring device of the present invention for measuring large gears.

[0021] In the figure: 100, support component; 101, three-jaw chuck; 102, welding nut; 200, main machine box; 201, bottom shell; 202, outer shell; 203, servo motor; 204, electronic speed controller; 205, battery; 206, single-chip microcomputer; 207, touch display screen; 208, button; 300, telescopic component; 301, first-stage telescopic rod; 302, third limit frame; 303, first limit frame; 304, second limit frame; 305, first knob; 306, second knob; 307, second-stage telescopic rod; 308, third-stage telescopic rod; 400, probe box; 401, probe housing; 402, probe; 403, probe board; 404, spring; 405, distance sensor; 500, large gear. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0023] Refer to Figures 1 - 6 , the present invention protects a portable gear tooth profile surveying device, including a support component 100, and the support component 100 is detachably arranged in the gear hole of the gear to be measured. There are many ways to be stuck in the gear hole. Claws can be set, and the claws clamp the hole wall of the gear hole, and then the support component is fixed in the gear hole; several telescopic rods can also be set on the support component 100, and electromagnets are arranged at the outer ends of each telescopic tube. After being energized, the electromagnets adsorb on the hole wall of the gear hole to realize the fixation of the support component 100; a claw disc can also be set on the support component 100, and the claw disc is adjusted so that the claws on the claw disc are stuck on the hole wall of the gear hole to realize the fixation of the support component 100.

[0024] A mainframe box 200 is provided on a support assembly 100. The mainframe box 200 can rotate relative to the support assembly 100. The mainframe box 200 is connected to a probe box 400 through a telescopic assembly 300. The telescopic assembly 300 can move the probe box 400 closer to or farther away from the mainframe box 200. The probe box 400 includes a box body 401. A channel 406 is formed in the box body 401. A probe board 403 and probes 402 fixed on the probe board 403 are arranged in the channel 406. The probes 402 have a head end and a tail end. The head end is close to the support assembly 100 and can contact the teeth of a gear to be measured. Specifically, the head end abuts against the teeth. The tail end sequentially passes through the probe board 403 and the box body 401 and protrudes from the outer wall of the box body 401. The probe board 403 is connected to the inner wall of the box body 401 through an elastic member, so that the probe board 403 can drive the probes 402 to move axially along the channel 406 in the channel 406. The function of the elastic member is to make the probes 402 abut against the tooth surface. Especially when the mainframe box 200 rotates, the probes 402 can firmly abut against the teeth. A distance sensor 405 is also arranged in the channel 406 for measuring the moving distance of the probe board 403. The distance sensor 405 is electrically connected to a single-chip microcomputer 206 arranged in the mainframe box 200. The distance sensor 405 transmits the measured data to the single-chip microcomputer 206. The single-chip microcomputer 206 can record the data of tooth profile measurement. The surveying and mapping in this application refers to the measurement of the gear tooth profile and the recording of the measurement data.

[0025] Reference Figure 3 , in a specific embodiment, the central axis of the channel 406 is perpendicular to the central axis of the support assembly 100, so that the probes 402 can survey the teeth along the radial direction of the gear to be measured. The elastic member is a spring 404, and the spring 404 is sleeved on the probes 402.

[0026] Reference Figure 5 and 6 , in a specific embodiment, the telescopic assembly 300 includes a third-stage telescopic rod 308. A second-stage telescopic rod 307 is sleeved outside the third-stage telescopic rod 308. The third-stage telescopic rod 308 can extend out of or retract into the second-stage telescopic rod 307. A first-stage telescopic rod 301 is sleeved outside the second-stage telescopic rod 307. The second-stage telescopic rod 307 can extend out of or retract into the first-stage telescopic rod 301. The telescopic assembly 300 can survey the tooth profiles of gears with different sizes through telescoping.

[0027] Reference Figure 5 and 6, in a specific embodiment, first-stage telescopic rod 301 is respectively provided with a first limit bracket 303 and a second limit bracket 304 at both ends. A first knob 305 is provided on the second limit bracket 304. Tightening the first knob 305 can fix the second-stage telescopic rod 307 relative to the first-stage telescopic rod 301. A third limit bracket 302 is provided on the outer side of the second-stage telescopic rod 307. A second knob 306 is provided on the third limit bracket 302. Tightening the second knob 306 can fix the third-stage telescopic rod 308 relative to the second-stage telescopic rod 307. The first knob 305 is used to fix the first-stage telescopic rod 301 and the second-stage telescopic rod 307, and the second knob 306 is used to fix the second-stage telescopic rod 307 and the third-stage telescopic rod 308.

[0028] Reference Figure 6 , in a specific embodiment, scale lines are provided on the first-stage telescopic rod 301, the second-stage telescopic rod 307, and the third-stage telescopic rod 308.

[0029] Reference Figures 1 - 3 , in a specific embodiment, the main machine box 200 includes a bottom shell 201. An outer shell 202 is connected above the bottom shell 201 to form a sealed space. An electronic speed controller 204 is provided in the sealed space. The electronic speed controller 204 is electrically connected to the servo motor 203 and the single-chip microcomputer 206 respectively. The servo motor 203 is connected to the battery 205. A key 208 and a touch display screen 207 are provided on the outer shell 202. The key 208, the touch display screen 207, and the servo motor 203 are all electrically connected to the single-chip microcomputer 206.

[0030] Reference Figure 5 and 6 , in a specific embodiment, the support assembly 100 can be a four-jaw chuck or a three-jaw chuck 101, etc. Preferably, it is a three-jaw chuck 101. Place the three-jaw chuck 101 into the central hole of the gear to be measured, adjust the three-jaw chuck 101 so that the jaws extend radially, and the jaws are stuck on the wall of the central hole to achieve fixation.

[0031] Reference Figure 5 , in a specific embodiment, a welding nut 102 is provided on the three-jaw chuck 101. The shaft end of the servo motor 203 is a threaded end, and the threaded end is in threaded cooperation with the welding nut 102.

[0032] To Figure 6The large gear 500 therein is the gear to be measured. The working process of the mapping device in the present invention is as follows: Place the large gear 500 on the workbench plane or the ground with the end face of the large gear 500 facing upward; Install the three-jaw chuck 101 at the center hole of the large gear 500; Operate the button 208 to turn on the device; Stretch the second-stage telescopic rod 307 and the third-stage telescopic rod 308 until the probe 402 touches the bottom of the tooth of the large gear 500, and tighten the first knob 305 and the second knob 306 to fix the second-stage telescopic rod 307 and the third-stage telescopic rod 308; Operate the button 208 to initialize the device; Read the scale size of the telescopic rod and input the size data into the single-chip microcomputer 206 through the touch display screen 207; Operate the button 208 to start the device. When the device rotates so that the coverage range of the probe 402 is greater than the circumference of one large gear 500, operate the button 208 to stop the device and end the tooth profile measurement of the large gear 500; Remove the device.

[0033] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited by this. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A portable gear tooth profile surveying device, characterized in that It includes a support component (100), the support component (100) is detachably arranged in the gear hole of the gear to be measured, a main machine box (200) is arranged on the support component (100), the main machine box (200) can rotate relative to the support component (100), the main machine box (200) is connected to a probe box (400) through a telescopic component (300), the telescopic component (300) can make the probe box (400) approach or move away from the main machine box (200), the probe box (400) includes a box body (401), a channel (406) is opened on the box body (401), a probe board (403) and probes (402) fixed on the probe board (403) are arranged in the channel (406), the probes (402) have a head end and a tail end, the head end is close to the support component (100), the head end can contact the teeth of the gear to be measured, the tail end sequentially passes through the probe board (403) and the box body (401) and protrudes from the outer wall of the box body (401), the probe board (403) is connected to the inner wall of the box body (401) through an elastic member, so that the probe board (403) can drive the probes (402) to move along the axial direction of the channel (406) in the channel (406), a distance sensor (405) is also arranged in the channel (406) for measuring the moving distance of the probe board (403), and the distance sensor (405) is electrically connected to a single-chip microcomputer (206) arranged in the main machine box (200); The central axis of the channel (406) is perpendicular to the central axis of the support component (100); the elastic member is a spring (404), and the spring (404) is sleeved on the probe (402); The telescopic component (300) includes a third-stage telescopic rod (308), a second-stage telescopic rod (307) is sleeved outside the third-stage telescopic rod (308), and the third-stage telescopic rod (308) can extend out or retract into the second-stage telescopic rod (307); a first-stage telescopic rod (301) is sleeved outside the second-stage telescopic rod (307), and the second-stage telescopic rod (307) can extend out or retract into the first-stage telescopic rod (301); Both ends of the first-stage telescopic rod (301) are respectively provided with a first limiting frame (303) and a second limiting frame (304), a first knob (305) is arranged on the second limiting frame (304), and tightening the first knob (305) can fix the second-stage telescopic rod (307) relative to the first-stage telescopic rod (301); a third limiting frame (302) is arranged outside the second-stage telescopic rod (307), a second knob (306) is arranged on the third limiting frame (302), and tightening the second knob (306) can fix the third-stage telescopic rod (308) relative to the second-stage telescopic rod (307).

2. The portable gear tooth profile surveying device according to claim 1, wherein Scale lines are arranged on the first-stage telescopic rod (301), the second-stage telescopic rod (307) and the third-stage telescopic rod (308).

3. The portable gear tooth profile mapping device according to claim 1, characterized in that, The host box (200) includes a bottom case (201), and an outer case (202) is connected above the bottom case (201) to form a sealed space. An electronic speed controller (204) is provided in the sealed space. The electronic speed controller (204) is electrically connected to a servo motor (203) and the single-chip microcomputer (206) respectively. The servo motor (203) is connected to a battery (205). A button (208) and a touch display screen (207) are provided on the outer case (202). The button (208), the touch display screen (207) and the servo motor (203) are all electrically connected to the single-chip microcomputer (206).

4. The portable gear tooth profile mapping device according to claim 3, wherein, The support assembly (100) includes a three-jaw chuck (101), and the three-jaw chuck (101) can be detachably connected to the gear to be measured.

5. The portable gear tooth profile mapping device according to claim 4, wherein, A welding nut (102) is provided on the three-jaw chuck (101). The shaft end of the servo motor (203) is a threaded end, and the threaded end is in threaded fit with the welding nut (102).

Images