CN219037938U - Engine signal gear detection machine - Google Patents

Abstract

The utility model discloses an engine signal gear detection machine, which comprises a base module, a motor module, a driven module and a detection module, wherein the driven module is arranged at the middle position of the base module, the motor module is arranged at one side of the driven module, and the detection module is arranged at the other side of the driven module; the driven module comprises a connecting structure, and the connecting structure is used for arranging signal gears with different diameters and different tooth numbers on the driven module; the detection module comprises a sensor for detecting the relative position of the signal gear profile. According to the utility model, different gears are arranged by arranging different connecting structures, and different gears can be detected by using one detection machine, so that the detection requirements of crankshaft signal gears and camshaft signal gears with different diameters and different numbers of teeth are met; different sensors are arranged on different signal gears to detect the relative positions of the corresponding signal gear contours, so that the detection accuracy is improved.

Description

Engine signal gear detection machine

Technical Field

The utility model relates to the field of engine signal gear testing, in particular to an engine signal gear detection machine.

Background

When the materials are checked, the engine manufacturer needs to check the machining precision of the engine signal gear. When the quality of the products is controlled, the signal gear manufacturers of the engine need to check the processing precision of the produced signal gears. The engine has very high requirements on the precision of the signal gear and the matching requirements on the signal gear and the signal sensor. The existing gear detection instrument generally adopts an optical principle to detect gears, so that the detection precision of the signal gears of the engine is not enough, and the matching precision of the signal gears and the signal sensors cannot be detected.

The existing gear detection instrument generally adopts an optical principle to detect gears, and generally adopts two groups of laser transmitters to detect the same gear in a contrasting manner, such as a laser beam pitch error detection device disclosed in the prior art, but the following problems exist in the optical detection scheme:

1. two groups of laser transmitters need to be calibrated before detection, and certain errors exist in the calibration process of the two groups of laser transmitters.

2. The optical detection scheme cannot meet the detection precision requirement of the signal gear with the rectangular tooth profile of the engine.

3. The optical detection scheme is to scan the gear to be detected tooth by tooth, and the gear to be detected cannot be detected under the conditions of low-speed rotation and high-speed rotation of the gear to be detected.

4. The optical detection scheme can only meet the detection requirement on one gear, but cannot meet the detection requirements on the crankshaft signal gears and the camshaft signal gears with different diameters and different numbers of teeth.

Disclosure of Invention

The utility model aims to solve the technical problems that the detection requirements and the detection precision of signal gears with different diameters and different tooth numbers cannot be met.

The technical problems of the utility model are solved by the following technical scheme:

the engine signal gear detection machine comprises a base module, a motor module, a driven module and a detection module, wherein the driven module is arranged at the middle position of the base module, the motor module is arranged at one side of the driven module, and the detection module is arranged at the other side of the driven module; the driven module comprises a connecting structure, wherein the connecting structure is used for arranging signal gears with different diameters and different tooth numbers on the driven module; the detection module comprises a sensor which is used for detecting the relative position of the outline of the signal gear and outputting a sensing signal.

In some embodiments, when the detected signal gear is a crankshaft signal gear, the connection structure is a connection shaft, and the crankshaft signal gear is disposed on the connection shaft.

In some embodiments, when the detected signal gear is a camshaft signal gear, the connecting structure includes a chuck base and a three-jaw chuck disposed above the chuck base, the camshaft signal gear being disposed above the three-jaw chuck.

In some embodiments, it is characterized by: when the detected signal gear is a crankshaft signal gear, the sensor is a crankshaft rotating speed sensor; when the detected signal gear is a camshaft signal gear, the sensor is a camshaft position sensor.

In some embodiments, the base module comprises a machine base, a wrench support, a wrench and a wrench sensor, wherein the wrench support is arranged on the side surface of the machine base, which is close to the detection module, the wrench is placed on the wrench support, and the wrench sensor is arranged on the front side surface of the wrench support.

In some embodiments, the base module further comprises a protection cover sensor and a protection cover, wherein the protection cover sensor is arranged at a position close to the wrench sensor on the upper side surface of the machine base, and the protection cover is arranged at a position close to the detection module on the upper side surface of the machine base, and can be folded upwards and downwards to be opened and closed; the protection cover is used for triggering the protection cover sensor, and when the wrench sensor and the protection cover sensor are triggered simultaneously, the servo motor is started to start detection.

In some embodiments, the motor module includes a servo motor, a motor controller, a drive gear, and a timing belt; the servo motor comprises a shell and a rotating shaft, the shell is positioned on the upper side surface of the machine base, and the rotating shaft downwards penetrates through the upper side surface of the machine base; the driving gear is arranged on the rotating shaft; one end of the synchronous belt is arranged on the driving gear; the motor controller is positioned behind the servo motor.

In some embodiments, the driven module further comprises a bearing seat, a bearing, an outer ring limiting block, an inner ring limiting block, a driven shaft and a driven gear; the bearing is arranged between the driven shaft and the bearing seat, the bearing inner ring is arranged on the driven shaft, the bearing outer ring is arranged in the bearing seat, the inner ring limiting block is arranged on the driven shaft and clamps the bearing inner ring, and the outer ring limiting block is arranged on the bearing seat and clamps the bearing outer ring; the driven gear is arranged at the lower side of the driven shaft, and the other end of the synchronous belt is arranged on the driven gear; the driven module is arranged at the middle position of the machine base through a bearing seat.

In some embodiments, the detection module further comprises an X-direction slide rail, a Y-direction slide rail, a Z-direction slide rail, a mounting block, and a quick clamp; the X-direction slide rail is arranged on the upper side of the machine base and deviates from the center machine base of the signal gear, the Z-direction slide rail is arranged on the X-direction slide rail, the Y-direction slide rail is arranged on the Z-direction slide rail, the mounting block is arranged on the front side of the Y-direction slide rail, the mounting block is arranged on the Y-direction slide rail, and the quick clamping head is arranged on the mounting block.

Compared with the prior art, the utility model has the beneficial effects that:

according to the engine signal gear detection machine provided by the utility model, different gears are installed by arranging different connecting structures, and different gears can be detected by using one detection machine, so that the detection requirements of crankshaft signal gears and camshaft signal gears with different diameters and different numbers of teeth are met. Meanwhile, different sensors are arranged on different signal gears, the rotating speed or the position of the corresponding signal gear is detected, and an induction signal is output for analyzing the processing precision of the detected gear.

In some embodiments, the driven shaft is driven by a synchronous belt through a servo motor, so that the gear to be detected can be detected under the condition of low-speed rotation and high-speed rotation of the gear to be detected.

In some embodiments, the self-locking fool-proof function is realized by arranging a protective cover sensor, a spanner sensor, a protective cover, a spanner and the like, namely, the detection machine can be started under the condition that the protective cover and the spanner are correctly placed at the same time, so that the safety of an operator is protected.

Drawings

FIG. 1 is a typical block diagram of an engine crankshaft signal gear in an embodiment of the present utility model;

FIG. 2 is a typical block diagram of an engine camshaft signal gear in an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a crankshaft signal gear scheme in an embodiment of the utility model;

FIG. 4 is an exploded view of a crank signal gear scheme in an embodiment of the utility model;

FIG. 5 is a cross-sectional view of a crankshaft signal gear scheme in an embodiment of the utility model;

FIG. 6 is a top view of a driven mechanism of a crank signal gear scheme in an embodiment of the utility model;

FIG. 7 is a cross-sectional view of a driven mechanism of a crank signal gear scheme in an embodiment of the utility model;

FIG. 8 is a schematic diagram of a camshaft signal gear scheme in accordance with an embodiment of the present utility model;

FIG. 9 is an exploded view of a camshaft signal gear scheme in accordance with an embodiment of the present utility model;

FIG. 10 is a cross-sectional view of a camshaft signal gear scheme in an embodiment of the present utility model;

FIG. 11 is a top view of a driven mechanism of a camshaft signal gear scheme in an embodiment of the present utility model;

FIG. 12 is a cross-sectional view of a driven mechanism of a camshaft signal gear scheme in an embodiment of the present utility model;

FIG. 13 is a graph of test results for a novel crankshaft signal gear scheme in accordance with an embodiment of the present utility model;

fig. 14 is a graph of test results of a camshaft signal gear scheme in an embodiment of the present utility model.

The reference numerals are explained as follows:

1. a crankshaft signal gear; 2. a camshaft signal gear; 31. a base module; 311. a machine base; 312. a spanner support; 313. a wrench; 314. a wrench sensor; 315. a protective cover sensor; 316. a protective cover; 32. a motor module; 321. a servo motor; 322. a motor controller; 323. a drive gear; 324. a synchronous belt; 33. a driven module; 331. a bearing seat; 332. a bearing; 333. an outer ring limiting block; 334. an inner ring limiting block; 335. a driven shaft; 336. a driven gear; 337. a connecting shaft; 338. a chuck base; 339. a three-jaw chuck; 34. a detection module; 341. an X-direction slide rail; 342. a Z-direction slide rail; 343. a Y-direction slide rail; 344. a mounting block; 345. a quick chuck; 346. a crankshaft rotation speed sensor; 347. camshaft position sensor.

Detailed Description

The utility model will be further described with reference to the following drawings in conjunction with the preferred embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

It should be noted that, in this embodiment, the terms of left, right, upper, lower, top, bottom, etc. are merely relative terms, or refer to the normal use state of the product, and should not be considered as limiting.

The following embodiment of the utility model provides an engine signal gear detection machine, which works and analyzes as follows:

the gears to be tested are a crankshaft signal gear 1 (figure 1) and a camshaft signal gear 2 (figure 2), and the embodiment of the utility model adopts the response of sensor electric signals to detect the processing precision of the signal gears. During the rotation of the signal gear, when the tooth tops and the tooth roots alternately pass through the signal detection points of the sensor, the sensor can quickly make signal response and output the signal response to the acquisition equipment, and the processing precision of the signal gear is analyzed by analyzing the signal response output of the sensor. The most important components of the detection machine are a base module 31, a motor module 32 and a detection module 34, wherein the driven module 33 can improve the detected rotating speed range of the signal gear and can detect under the condition of higher rotating speed.

As shown in fig. 3, 4 and 5, the detection machine includes a base module 31, a motor module 32, a driven module 33 and a detection module 34. The driven module 33 is arranged at the middle position of the base module 31, the driven gear 336 is arranged at the lower side of the machine base 311, and the connecting shaft 337 is arranged at the upper side of the machine base 311; the motor module 32 is mounted on one side of the driven module 33, and the detection module 34 may be disposed at a peripheral position of the driven module 33, preferably, the detection module 34 is disposed on the other side of the driven module 33, for example, disposed at a rear left position of the driven module 33, so as to facilitate the operation and observation of personnel. The motor module 32 can be arranged on the right side of the driven module 33, the rotating shaft of the servo motor 321 penetrates through the machine base 311, the driving gear 323 and the synchronous belt 324 are arranged on the lower side of the machine base 311, and the motor module 32 drives the driven module 33 to rotate through the synchronous belt 324; the detection module 34 can be arranged at the left rear position of the driven module 33, the detection module 34 is provided with a sensor, and the relative positions of the sensor and the detected signal gear are adjusted.

As shown in fig. 3, 4 and 5, the base module 31 includes a machine base 311, a wrench bracket 312, a wrench 313, a wrench sensor 314, a protection cover sensor 315 and a protection cover 316. The spanner support 312 is arranged on the left side surface of the machine base 311, the spanner 313 is arranged on the spanner support 312, and the spanner sensor 314 is arranged on the front side surface of the spanner support 312; the protection cover sensor 315 is mounted on the upper side of the machine base 311 at a position close to the wrench sensor, which may be a position forward of the left side of the upper side of the machine base 311, the protection cover 316 is mounted on the upper side of the machine base 311 at a position close to the detection module 34, which may be a position forward of the upper side of the machine base 311, and the protection cover 316 may be folded upward to be opened. When the measured signal gear is mounted, a fixed gear needs to be mounted by a wrench 313. After the gear to be tested is installed, the spanner 313 needs to be placed at a fixed position, the spanner sensor 314 is triggered, meanwhile, when the protective cover 316 is closed in place, the protective cover sensor 315 is triggered, when the spanner sensor 314 and the protective cover sensor 315 are triggered at the same time, the circuit of the whole detection machine is conducted, the servo motor 321 is started to start detection, and the function of foolproof protection personnel is mainly played.

As shown in fig. 3, 4 and 5, the motor module 32 includes a servo motor 321, a motor controller 322, a driving gear 323 and a timing belt 324. The servo motor 321 is arranged on the right side of the driven module 33, the servo motor 321 comprises a shell and a rotating shaft, the shell of the servo motor 321 is arranged on the upper side surface of the machine base 311, and the rotating shaft of the servo motor 321 downwards penetrates through the upper side surface of the machine base 311; the motor controller 322 is arranged on the upper side surface of the machine base 311 and is positioned at the rear position of the servo motor 321; the driving gear 323 is arranged on the rotating shaft of the servo motor, and the driving gear 323 is positioned on the lower side of the machine base 311; a timing belt 324 is mounted on the driving gear 323. There is no mechanical connection between the servo motor 321 and the motor controller 322, the servo motor 321 and the motor controller 322 are all installed on the machine base, and the servo motor 321 and the motor controller 322 are only electrically connected through wires, so that control signals are convenient to transmit.

As shown in fig. 5 and 10, the driven module 33 includes a bearing seat 331, a bearing 332, an outer ring stopper 333, an inner ring stopper 334, a driven shaft 335, a driven gear 336, and a connection structure including a connection shaft 337, a chuck seat 338, and a three-jaw chuck 339, the connection structure being used for disposing signal gears with different diameters and different numbers of teeth on the driven module 33. The bearings 332 are arranged between the driven shaft 335 and the bearing seat 331, the inner rings of the bearings 332 are arranged on the driven shaft 335, 2 inner rings of the bearings 332 can be arranged on the driven shaft 335 side by side, and the outer rings of the bearings 332 can be arranged in the bearing seat 331; the inner ring limiting block 334 is arranged on the driven shaft 335 and clamps the inner ring of the bearing 332, and the outer ring limiting block 333 is arranged on the bearing seat 331 and clamps the outer ring of the bearing 332; the driven gear 336 is mounted on the lower side of the driven shaft 335, and the timing belt 324 is mounted on the driven gear 336; the driven module 33 is mounted at the middle position of the machine base 311 through a bearing seat 331. As shown in fig. 7, when detecting the crank signal gear 1, the connecting structure is a connecting shaft 337, the connecting shaft 337 is installed on the upper side of the driven shaft 335, and the detected crank signal gear 1 is installed on the connecting shaft 337; as shown in fig. 12, when the camshaft signal gear 2 is detected, the connection structure is a chuck base 338 and a three-jaw chuck 339, the chuck base 338 is installed on the upper side of the driven shaft 335, the three-jaw chuck 339 is installed on the chuck base 338, and the camshaft signal gear is installed on the three-jaw chuck 339. In some embodiments, the design function of the detection machine can be realized by directly using gear transmission or other transmission modes to replace synchronous belt transmission.

As shown in fig. 3, 8 and 9, the detection module 34 includes an X-direction slide 341, a Z-direction slide 342, a Y-direction slide 343, a mounting block 344, a quick chuck 345, and sensors including a crankshaft rotational speed sensor 346 and a camshaft position sensor 347, and the detection module 34 is used for mounting and debugging the relative positions of the detection sensor and the detected signal gear. The X-direction slide rail 341 is mounted on the center machine base 311 of the signal gear and offset from the upper side of the machine base 311, and can be mounted on the left rear position of the driven module 33 on the upper side of the machine base 311; the Z-direction slide rail 342 is mounted on the X-direction slide rail 341; the Y-direction slide rail 343 is mounted above the Z-direction slide rail 342; the mounting block 344 is mounted on the front side of the Y-direction slide rail 343; quick clamp 345 is mounted to the front side of mounting block 344 in a left position. When the crankshaft signal gear 1 is detected, the sensor is a crankshaft rotation speed sensor 346, and the crankshaft rotation speed sensor 346 is arranged at the right position of the front side surface of the mounting block 344; when detecting the camshaft signal gear 2, the sensor is a camshaft position sensor 347, and the camshaft position sensor 347 is mounted on the right side of the front side of the mounting block 344. In the process of the rotation of the detected signal gear, when each tooth passes through a detection point of the sensor, the tooth root and the tooth top of each tooth are respectively provided with a process of approaching and then keeping away from the detection point of the sensor, the sensor outputs induction signals in the process of approaching and keeping away, and the processing precision of the tooth root and the tooth top of each tooth can be analyzed by analyzing the induction signals output by the sensor.

As shown in fig. 3, 6 and 7, when the crank signal gear 1 is detected, a connecting shaft 337 is installed on the upper side of the driven shaft 335, and the detected crank signal gear 1 is installed on the connecting shaft 337; the crankshaft speed sensor 346 is installed on the right side of the front side of the mounting block 344 and is clamped by the quick clamping head 345; adjusting the position of the Z-direction slide rail 342 so that the axis of the crankshaft rotational speed sensor 346 and the signal teeth of the crankshaft signal gear 1 are at the same height in the Z-direction; adjusting the position of the X-direction slide rail 341 to align the axis of the crank rotation speed sensor 346 with the center of the crank signal gear 1 in the X-direction; the position of the Y-direction slide rail 343 is adjusted so that the tooth tip distance H between the crank rotation speed sensor 346 and the crank signal gear 1 in the Y-direction is 0.5mm or less and H1 or less and 1.5mm or less. Placing the wrench 313 on the wrench stand 312 and activating the wrench sensor 314; closing the boot 316 in place and triggering the boot sensor 315. Then, the servo motor 321 is started, the detection machine starts to detect, and the output signal of the crankshaft rotation speed sensor 346 is collected by the test computer. The crank rotation speed sensor 346 is based on an electromagnetic induction principle, and when a detection point magnetic field changes, an output voltage changes, and the output voltage is a sine wave type analog signal.

When detecting the crank signal gear 1, the crank signal gear 1 has larger mass, and the crank signal gear 1 can be ensured to stably run when in high running only by directly installing and fastening the crank signal gear 1 on the driven shaft 335 through the connecting shaft 337. The connecting shaft 337 is a special mounting and fastening structure for the crank signal gears 1, and the crank signal gears 1 with different diameters and different teeth numbers are provided with different connecting shafts 337, so that the crank signal gears 1 with different diameters and different teeth numbers can be detected only by replacing the connecting shafts 337.

As shown in fig. 8, 9, 10 and 12, when the camshaft signal gear 2 is detected, a chuck base 338 is mounted on the upper side of the driven shaft 335, a three-jaw chuck 339 is mounted on the chuck base 338, and the camshaft signal gear 2 is mounted on the three-jaw chuck 339 with a wrench 313. The camshaft position sensor 347 is mounted on the front side of the mounting block 344 in a right position and is clamped by the quick clamp 345. Adjusting the position of the Z-direction slide rail 342 so that the axis of the camshaft position sensor 347 and the signal teeth of the camshaft signal gear 2 are at the same height in the Z-direction; adjusting the position of the X-direction slide rail 341 so that the axis of the camshaft position sensor 347 is aligned with the center of the camshaft signal gear 2 in the X-direction; the position of the Y-direction slide rail 343 is adjusted so that the tooth tip distance H2 between the camshaft position sensor 347 and the camshaft signal gear 2 in the Y-direction is 0.5mm or less than H2 or less than 2.0mm. Placing the wrench 313 on the wrench stand 312 and activating the wrench sensor 314; closing the boot 316 in place and triggering the boot sensor 315. Then, the servo motor 321 is started, the detection machine starts to detect, and the output signal of the cam shaft position sensor 347 is collected by the test computer. The camshaft position sensor 347 is based on the hall principle, and when the magnetic field at the detection point changes, the output voltage changes, and the output voltage is a square wave type digital signal.

When the camshaft signal gear 2 is detected, the camshaft signal gear 2 has smaller mass, and can be directly installed and fastened by the three-jaw chuck 339, so that the camshaft signal gear 2 can be ensured to stably run in high running. The three-jaw chuck 339 can meet the requirement of the camshaft signal gears 2 with different diameters and different numbers of teeth in the range of R of 20mm less than or equal to R less than or equal to 72 mm. In some embodiments, the crank signal gear 1 may also be mounted directly on the three jaw chuck 339 for inspection, replacing a powerful servo motor.

When the crankshaft signal gears 1 with different diameters and different tooth numbers need to be detected, the special connecting shaft 337 of the detected crankshaft signal gear 1 can be replaced. When the camshaft signal gears 2 with different diameters and different tooth numbers are required to be detected, the connecting shaft 337 is only required to be detached, the chuck seat 338 is arranged on the upper side of the driven shaft 335, the three-jaw chuck 339 is arranged on the chuck seat 338, and the camshaft signal gears 2 are arranged on the three-jaw chuck 339 by using the spanner 313.

To protect the safety of the inspector, the servo motor 321 may be started after the wrench sensor 314 and the protection cover sensor 315 need to be triggered simultaneously. During the detection process, the protective cover 316 is opened, and the servo motor 321 automatically stops running; the spanner 313 is moved, and the servo motor 321 is automatically stopped.

The transmission ratio of the driving gear 323 to the driven gear 336 is 2:1, the servo motor 321 can enable the rotation speed of the driven shaft 335 to reach the rotation speed range of 0-5000 rpm through the synchronous belt 324, and the crankshaft signal gear 1 and the camshaft signal gear 2 can be detected under the high rotation speed condition. In some embodiments, the maximum speed range of the driven shaft 335 may be arbitrarily changed by replacing the high power servo motor, adjusting the transmission ratio of the driving gear 323 and the driven gear 336.

In some embodiments, the transmission mechanism may be omitted, the driven shaft 335 may be directly mounted on the rotating shaft of the servo motor 321, and the servo motor 321 may directly drive the driven shaft 335 to rotate.

Examples:

when detecting the engine crankshaft signal gear 1 (fig. 1), as shown in fig. 3, a crankshaft rotation speed sensor 346 is installed at a right position on the front side of the mounting block 344 and is clamped by a quick clamp 345. As shown in fig. 7, a connecting shaft 337 is mounted on the upper side of the driven shaft 335, and the measured crank signal gear 1 is mounted on the connecting shaft 337.

As shown in fig. 6 and 7, the position of the Z-direction slide rail 342 is adjusted so that the axis of the crank rotation speed sensor 346 and the signal teeth of the crank signal gear 1 are at the same height in the Z-direction; adjusting the position of the X-direction slide rail 341 to align the axis of the crank rotation speed sensor 346 with the center of the crank signal gear 1 in the X-direction; the position of the Y-direction slide rail 343 is adjusted so that the tooth tip distance H between the crank rotation speed sensor 346 and the crank signal gear 1 in the Y-direction is 0.5mm or less and H1 or less and 1.5mm or less.

As shown in fig. 3, a wrench 313 is placed on the wrench holder 312, and the wrench 313 triggers the wrench sensor 314 to operate; after the protective cover 316 is closed, the protective cover 316 triggers the protective cover sensor 315 to operate.

As shown in fig. 3 and 5, the servo motor 321 is started, the servo motor 321 drives the synchronous belt 324 to rotate through the driving gear 323, and the synchronous belt 324 drives the crank signal gear 1 to rotate through the driven gear 336, the driven shaft 335 and the connecting shaft 337.

As shown in fig. 6 and 7, during rotation of the crank signal gear 1, the crank sensor 346 promptly responds to the signal and outputs the collecting device when the tooth tip and tooth root alternately pass the signal detection point of the crank sensor 346. As shown in fig. 13, during rotation of the crank signal gear 1, the crank sensor 346 generates a sine wave analog signal.

As shown in fig. 13, the abscissa of the sine wave is the period in which the crank signal gear 1 rotates, and the ordinate is the voltage signal output from the crank sensor 346. The rising edge of the sine wave indicates the process of gradually changing the tooth root to the tooth tip of the crank signal gear 1 at the detection position of the crank sensor 346; the falling edge of the sine wave indicates the progression of the tooth tip to the tooth root of the crank signal gear 1 at the detection position of the crank sensor 346. The machining accuracy of each signal tooth of the detected crank signal gear 1 can be analyzed by the analog signal of the sine wave.

When detecting the engine camshaft signal gear 2 (fig. 2), as shown in fig. 8, the camshaft position sensor 347 is mounted on the right side of the front side of the mounting block 344 and is clamped by the quick clamp 345. As shown in fig. 12, a chuck base 338 is attached to the upper side of the driven shaft 335, a three-jaw chuck 339 is attached to the chuck base 338, and the camshaft signal gear 2 is attached to the three-jaw chuck 339 by a wrench 313.

As shown in fig. 11 and 12, the position of the Z-direction slide rail 342 is adjusted so that the axis of the cam shaft position sensor 347 and the signal teeth of the cam shaft signal gear 2 are at the same height in the Z-direction; adjusting the position of the X-direction slide rail 341 so that the axis of the camshaft position sensor 347 is aligned with the center of the camshaft signal gear 2 in the X-direction; the position of the Y-direction slide rail 343 is adjusted so that the tooth tip distance H2 between the camshaft position sensor 347 and the camshaft signal gear 2 in the Y-direction is 0.5mm or less than H2 or less than 2.0mm.

As shown in fig. 3, a wrench 313 is placed on the wrench holder 312, and the wrench 313 triggers the wrench sensor 314 to operate; after the protective cover 316 is closed, the protective cover 316 triggers the protective cover sensor 315 to operate.

As shown in fig. 8 and 10, the servo motor 321 is started, the servo motor 321 drives the timing belt 324 to rotate through the driving gear 323, and the timing belt 324 drives the cam shaft signal gear 2 to rotate through the driven gear 336, the driven shaft 335, the chuck base 338 and the three-jaw chuck 339.

As shown in fig. 11 and 12, when the tooth tip and the tooth root alternately pass the signal detection point of the camshaft sensor 347 during the rotation of the camshaft signal gear 2, the camshaft sensor 347 rapidly responds to the signal and outputs the collecting device as shown in fig. 14.

During the rotation of the camshaft signal gear 2, the camshaft sensor 347 generates a square-wave digital signal, and the processing accuracy of the detected camshaft signal gear 2 can be analyzed by the square-wave digital signal.

As shown in fig. 14, the abscissa of the square wave is the period in which the camshaft signal gear 2 rotates, and the ordinate is the voltage signal output from the camshaft sensor 347. The rising edge of the square wave indicates the process of gradually changing the tooth root to the tooth tip of the camshaft signal gear 2 at the detection position of the camshaft sensor 347; the falling edge of the square wave indicates that the tooth tip of the camshaft signal gear 2 gradually changes to the tooth root process at the detection position of the camshaft sensor 347. The processing precision of each signal tooth of the detected camshaft signal gear 2 can be analyzed through the digital signal of the square wave.

In the prior art, a crankshaft rotation speed sensor is used for detecting the rotation speed of an engine crankshaft, namely the rotation speed of the engine during driving, a camshaft position sensor is used for detecting the rotation position of an engine cam, the camshaft position sensor and the crankshaft rotation speed sensor are combined, so that the position of an engine piston at each moment can be clearly detected, and a computer of an automobile can control the engine to suck, compress, apply work and exhaust for 4 strokes, so that the accuracy of the detection of the two signals determines the working accuracy and the working capacity of the engine, and the power, the oil consumption and the exhaust emission of the engine are influenced.

The embodiment of the utility model has the following advantages:

1. the embodiment of the utility model uses a standard crankshaft speed sensor 346 to detect the crankshaft signal gear 1, uses a standard camshaft position sensor 347 to detect the camshaft signal gear 2, and when the tooth tops and tooth bottoms alternately pass through the sensor signal detection points in the rotation process of the signal gear, the tooth bottom and tooth top of each tooth are respectively close to and further away from the sensor detection points, and the sensor can quickly respond to signals and output sensing signals to the acquisition equipment in the approaching and separating processes. Compared with the traditional laser detection, the method has the advantages that the processing precision of the detected gear is analyzed by collecting the output signal of the sensor, the signal response speed of the sensor is higher, the collected signal is more accurate, the detection result is more accurate, and the precision is higher, so that the detection precision of equipment can be improved by the detection mode.

2. According to the embodiment of the utility model, the crankshaft signal gear 1 and the camshaft signal gear 2 are detected under the condition that the rotation speed of the crankshaft signal gear 1 and the camshaft signal gear 2 is 0-5000 rpm.

3. The embodiment of the utility model can analyze waveform information of signals output by the crankshaft position sensor 346 and the camshaft rotation speed sensor 347 in the rotation process of the crankshaft signal gear 1 and the camshaft signal gear 2, and detect the processing precision of the crankshaft signal gear 1 and the camshaft signal gear 2.

4. The embodiment of the utility model can simultaneously meet the detection requirements of the crankshaft signal gear 1 and the camshaft signal gear 2 with different diameters and different tooth numbers.

5. The embodiment of the utility model adds a self-locking fool-proof design, and under the condition that the protective cover 316 and the wrench 313 are simultaneously and correctly placed, the detection machine can be started, so that the safety of operators is protected.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several equivalent substitutions and obvious modifications can be made without departing from the spirit of the utility model, and the same should be considered to be within the scope of the utility model.

Claims (9)

1. The utility model provides an engine signal gear detects board which characterized in that: the intelligent control device comprises a base module (31), a motor module (32), a driven module (33) and a detection module (34), wherein the driven module (33) is arranged at the middle position of the base module (31), the motor module (32) is arranged at one side of the driven module (33), and the detection module (34) is arranged at the other side of the driven module (33); the driven module (33) comprises a connecting structure, wherein the connecting structure is used for arranging signal gears with different diameters and different tooth numbers on the driven module (33); the detection module (34) includes a sensor for detecting the relative position of the signal gear profile and outputting a sensed signal.

2. The inspection station of claim 1, wherein: when the detected signal gear is a crankshaft signal gear (1), the connecting structure is a connecting shaft (337), and the crankshaft signal gear (1) is arranged on the connecting shaft (337).

3. The inspection station of claim 1, wherein: when the detected signal gear is a cam shaft signal gear (2), the connecting structure comprises a chuck seat (338) and a three-jaw chuck (339), the three-jaw chuck (339) is arranged on the chuck seat (338), and the cam shaft signal gear (2) is arranged on the three-jaw chuck (339).

4. The inspection station of claim 1, wherein: when the detected signal gear is a crankshaft signal gear (1), the sensor is a crankshaft rotation speed sensor (346); when the detected signal gear is a camshaft signal gear (2), the sensor is a camshaft position sensor (347).

5. The inspection station of claim 1, wherein: the base module (31) comprises a machine base (311), a wrench support (312), a wrench (313) and a wrench sensor (314), wherein the wrench support (312) is arranged on the side surface of the machine base (311) close to the detection module (34), the wrench (313) is placed on the wrench support (312), and the wrench sensor (314) is arranged on the front side surface of the wrench support (312).

6. The inspection tool of claim 5, wherein: the base module (31) further comprises a protection cover sensor (315) and a protection cover (316), the protection cover sensor (315) is arranged at the position, close to the wrench sensor (314), of the upper side face of the machine base (311), the protection cover (316) is arranged at the position, close to the detection module (34), of the upper side face of the machine base (311), and the protection cover (316) can be folded upwards to be opened and folded downwards to be closed; the protection cover (316) is used for triggering the protection cover sensor (315), the spanner (313) is used for triggering the spanner sensor (314), and the servo motor (321) is started to start detection when the spanner sensor (314) and the protection cover sensor (315) are triggered simultaneously.

7. The inspection tool of claim 5 or 6, wherein: the motor module (32) comprises a servo motor (321), a motor controller (322), a driving gear (323) and a synchronous belt (324); the servo motor (321) comprises a shell and a rotating shaft, the shell is positioned on the upper side surface of the machine base (311), and the rotating shaft downwards penetrates through the upper side surface of the machine base (311); the driving gear (323) is arranged on the rotating shaft; one end of the synchronous belt (324) is arranged on the driving gear (323); the motor controller (322) is positioned behind the servo motor (321).

8. The inspection tool of claim 7, wherein: the driven module (33) further comprises a bearing seat (331), a bearing (332), an outer ring limiting block (333), an inner ring limiting block (334), a driven shaft (335) and a driven gear (336); the bearing (332) is arranged between the driven shaft (335) and the bearing seat (331), the inner ring of the bearing (332) is arranged on the driven shaft (335), the outer ring of the bearing (332) is arranged in the bearing seat (331), the inner ring limiting block (334) is arranged on the driven shaft (335) and clamps the inner ring of the bearing (332), and the outer ring limiting block (333) is arranged on the bearing seat (331) and clamps the outer ring of the bearing (332); the driven gear (336) is arranged at the lower side of the driven shaft (335), and the other end of the synchronous belt (324) is arranged on the driven gear (336); the driven module (33) is arranged at the middle position of the machine base (311) through the bearing seat (331).

9. The inspection tool of claim 8, wherein: the detection module (34) further comprises an X-direction sliding rail (341), a Y-direction sliding rail (343) and a Z-direction sliding rail (342), a mounting block (344) and a quick chuck (345); x is to slide rail (341) setting on board base (311) the last side of board base (311) and skew signal gear's central board base (311), Z is to slide rail (342) setting on X is to slide rail (341), and Y is to slide rail (343) setting on Z is to slide rail (342), installation piece (344) setting is on the leading flank of Y is to slide rail (343), is equipped with on Y is to slide rail (343) installation piece (344), be equipped with quick chuck (345) on installation piece (344).

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