New energy automobile duplex gear position degree detection device and detection method

Abstract

The invention relates to the technical field of duplex gear part detection, and discloses a new energy automobile duplex gear position degree detection device and method.The device comprises a mounting table, a position degree detection seat is mounted on the mounting table, and a position degree detection assembly is mounted on one side of the position degree detection seat; the position degree detection assembly comprises a first servo sliding seat, a second servo sliding seat, an accurate positioning head and a position measuring head, the accurate positioning head is installed on the first servo sliding seat, the position degree measuring head is installed on the second servo sliding seat, and the initial position of the position degree measuring head is collinear with the orthographic projection of the accurate positioning head; the second servo sliding seat is also provided with a displacement sensor for sensing the deflection amount of the measuring head; the position of the duplicate gear is corrected through the accurate positioning head, whether the two gears on the duplicate gear deviate or not is detected through the position measuring head, and full-automatic detection of the position degree of the duplicate gear can be achieved through the cooperation of the device and the method.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of detection of double-tooth parts, and particularly relates to a new energy automobile double-tooth position degree detection device and a detection method. BACKGROUND

[0002] In the manufacturing of a new energy automobile double-tooth, two tooth rings are processed in parallel on the same blank, and are usually helical gears or herringbone gears, and are connected by webs or splines to form two-stage reduction; if there is a mispositioning condition in the gear processing of the upper and lower tooth rings, serious mechanical friction will be caused in the transmission process of the gear, and if the mispositioning of the upper and lower tooth rings is serious, the double-tooth will be broken, so it is necessary to detect the position degree of the upper and lower gears of the double-tooth before leaving the factory to ensure that the position degree of the upper and lower gears of the double-tooth meets the standard requirements.

[0003] At present, the detection of the position degree of the double-tooth is all achieved by using two detection heads to approach the two gears of the double-tooth to observe whether there is mispositioning, and in the detection process of the double-tooth, the gears need to be fixed, so that the detection heads cannot be inserted into the lowest point of the gear tooth groove, resulting in insufficient detection precision, especially when applied to automatic detection, without the participation of manual adjustment, interference between the executing part and the double-tooth needs to be avoided, so it is necessary to make great improvement on the automatic position degree to meet the improvement of the measurement precision. SUMMARY

[0004] The application aims to provide a new energy automobile double-tooth position degree detection device and a detection method to realize the high-precision requirement of double-tooth position degree detection.

[0005] To achieve the above-mentioned purpose, the application adopts the following technical scheme: a new energy automobile double-tooth position degree detection device comprises a mounting table, a position degree detection seat is fixedly installed on the mounting table, an axial positioning column is arranged at the center of the position degree detection seat, a position degree detection assembly is installed on one side of the position degree detection seat, the position degree detection assembly comprises a first servo sliding seat, a second servo sliding seat, a precise positioning head and a position measurement head, the precise positioning head is installed on the first servo sliding seat, the second servo sliding seat is provided with an elastic offset disc, a horizontal deflection block is connected to the front end of the elastic offset disc through two symmetrical springs, the position measurement head is installed at the front end of the horizontal deflection block, the horizontal deflection block is constrained by the spring elastic force on the left and right sides, the initial position of the position measurement head is collinear with the front projection of the precise positioning head, the elastic offset disc is further provided with a displacement sensor for sensing the deflection amount of the measurement head, the first servo sliding seat drives the precise positioning head to approach one outer tooth of the double-tooth, and the second servo sliding seat drives the position measurement head to approach the other outer tooth of the double-tooth.

[0006] The principle and advantages of the present scheme are: in the position degree detection, the double teeth are constrained in the axial direction by the positioning column; the fine positioning head is used to fine-tune the orientation of the double teeth, the fine positioning head is inserted between two adjacent teeth of the outer teeth, and gradually advances the fine positioning head, the fine positioning head gradually enters the middle position of the two adjacent teeth of the double teeth, and the fine positioning head is used to fine-tune the orientation of the double teeth.

[0007] In the position degree detection process, the fine positioning head not only finds the middle position of the two adjacent teeth of the double teeth below, but also corrects the position of the double teeth, so that the detection efficiency and accuracy of the double teeth are greatly improved.

[0008] Preferably, the outer diameter of the axial positioning column is 0.02-0.06mm smaller than the inner diameter of the double teeth, the tail end of the first servo sliding seat is connected with a damping spring which weakens the feeding force of the first servo sliding seat, and the elastic coefficient of the damping spring is 2-6mm / N.

[0009] The outer diameter of the axial positioning column is 0.02-0.06mm smaller than the inner diameter of the double teeth, so that the maximum linear movement distance of the double teeth is 0.02-0.06mm. In order to enable the double teeth to rotate, the double teeth cannot be in contact with the axial positioning column, a damping spring is added behind the first servo sliding seat, and the elastic coefficient of the damping spring is 2-6mm / N. Before detection, the initial potential energy of the damping spring needs to be adjusted to ensure that the force of the fine positioning head is not too large, so that the double teeth are not stuck and cannot rotate, and the double teeth have a certain pre-tightening force to avoid rotation during the subsequent position degree measurement.

[0010] Preferably, the position degree detection assembly further comprises a quick advancing frame and a quick advancing slide, the quick advancing frame is assembled on the quick advancing slide, the first servo sliding seat and the second servo sliding seat are installed on the quick advancing frame, and the second servo sliding seat is directly above the first servo sliding seat. The quick advancing of the quick advancing frame can enable the fine positioning head and the position degree detection head to quickly approach the outer teeth of the double teeth.

[0011] Preferably, a blowing mechanism is arranged outside the position degree detection seat, the blowing mechanism comprises a blowing sleeve arranged outside the position degree detection seat, a plurality of air outlet fins are arranged around the top of the blowing sleeve, each air outlet fin is provided with two air outlets, one air outlet is located inside the air outlet fin and faces the position degree detection seat, and the other air outlet is located at the top of the air outlet fin and faces upward, a wind channel is arranged in the blowing sleeve, one end of the wind channel is communicated with the air outlet, and the other end is connected with a blowing air pipe.

[0012] The double gear is blown by the blowing sleeve, so that the influence of the adhesion on the detection accuracy is avoided.

[0013] Preferably, the second servo sliding seat is connected with an adjusting frame, the adjusting frame is provided with an adjusting screw rod, the adjusting screw rod is installed with a motor-driven adjusting seat, the adjusting seat is connected with a support arm, the left and right sides of the lateral deflection block are connected between the support arms through springs, the support arm is fixedly connected with the adjusting seat, and the adjusting seat drives the support arm to move left and right. When the position detection head offset exceeds the threshold range during the detection accuracy correction process of the standard double gear, the motor drives the adjusting seat to move left and right to eliminate the offset, and the automatic correction of the position detection is completed.

[0014] Preferably, the other side of the position detection seat is provided with a gear end face size detection mechanism, including end face measurement sensors for detecting different end face sizes of the double gear, and a stand supporting the end face measurement sensors, the bottom of the stand is slidably connected with an end face measurement track, and the stand is driven by the motor to slide on the end face measurement track, so that the end face measurement sensor is close to or away from the end face position of the double gear.

[0015] The application also provides a position detection method, including the following steps: Step one: placing the double gear on the position detection seat, and restraining the double gear in the axial direction through the axial positioning column; Step two: letting the first servo sliding seat drive the precise positioning head to approach the lower outer gear of the double gear, inserting the precise positioning head between two adjacent teeth on the outer gear, and if the precise positioning head does not align with the middle position of the two adjacent teeth during the gradual pushing process of the precise positioning head, slightly pushing the double gear to rotate by the forward moving force of the precise positioning head until the precise positioning head abuts against the middle point of the two adjacent teeth, and the double gear no longer rotates under the limitation of the precise positioning head, and the precise positioning is completed. Step three: letting the second servo sliding seat drive the position measurement head to gradually approach the upper outer gear of the double gear, and measuring the position measurement head offset through the displacement sensor during the process that the position measurement head moves forward and abuts against the middle point of the two adjacent teeth, and the position degree of the double gear is detected.

[0016] Further, in step two, the feeding force of the precise positioning head is also periodically corrected, the damping spring behind the first servo sliding seat is adjusted, so that the feeding process of the precise positioning head does not cause the double gear to tilt.

[0017] Further, the position degree detection method further comprises a step of adjusting the position deviation of the position degree measurement head, specifically comprising: placing the standard double gear into the position degree detection seat, detecting the standard double gear in the manner of steps two and three, if the left and right horizontal displacement distance of the position degree measurement head exceeds the preset value, starting the motor on the adjusting seat, driving the position measurement head to horizontally displace a correction amount in the opposite direction of the horizontal displacement, and making the position degree measurement head face the middle point of the two adjacent teeth on the top of the double gear.

[0018] Further, between steps one and two, the double gear is further blown, a blowing mechanism is arranged outside the position degree detection seat, 0.5-0.8 MPa airflow is introduced into the blowing pipe, the two tooth surfaces of the double gear are comprehensively cleaned in the circumferential direction, and interference of foreign matters on the measurement is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the double gear position degree detection device for new energy vehicles.

[0020] Figure 2 It is a structural schematic diagram of the double gear position degree detection device for new energy vehicles. Figure 1 It is a structural schematic diagram of the position degree detection assembly.

[0021] Figure 3 It is a structural schematic diagram of the double gear position degree detection device for new energy vehicles. Figure 2 It is a structural schematic diagram of the double gear position degree detection device for new energy vehicles.

[0022] Figure 4 It is a structural schematic diagram of the double gear position degree detection device for new energy vehicles. DETAILED DESCRIPTION

[0023] The following will be further described in detail through specific embodiments: Embodiment 1 As shown in the accompanying drawings Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the double-gear position detection device for new energy vehicles includes a mounting platform 2, a position detection seat 3 is fixedly installed on the mounting platform 2, an axial positioning column 31 is provided in the center of the position detection seat 3, a position detection component 1 is installed on one side of the position detection seat 3, and the position detection component 1 includes a first servo sliding seat 12, a second servo sliding seat 13, a precise positioning head 121 and a position measuring head 141. The precise positioning head 121 is installed on the first servo sliding seat 12, and the second servo sliding seat 13 is installed with an elastic offset disk 14. The front end of the elastic offset disk 14 is passed through the left The two symmetrical springs on the right are connected to a lateral deflection block 144, and a position measuring head 141 is installed at the front end of the lateral deflection block 144. The left and right sides of the lateral deflection block 144 are constrained by the spring force. The initial position of the position measuring head 121 is collinear with the positive projection of the precise positioning head 141. The elastic offset disk 14 is also provided with a displacement sensor (not shown in the figure) that senses the deflection of the measuring head. The first servo sliding seat 12 drives the precise positioning head 121 to approach the outer teeth below the duplex tooth A, and the second servo sliding seat 13 drives the position measuring head 141 to approach the outer teeth above the duplex tooth A.

[0024] During positional accuracy testing, positioning column 31 is used to constrain duplex tooth A axially. Precision positioning head 121 is used to fine-tune the orientation of duplex tooth A. Precision positioning head 121 is inserted between two adjacent teeth on the outer tooth. As precision positioning head 121 is gradually advanced, it gradually enters the middle position and root of the two adjacent teeth of duplex tooth A. The force of precision positioning head 121's forward movement causes duplex tooth A to be finely rotated to achieve precise positioning. During the positional accuracy testing process, position measurement head 141 is gradually brought closer to the upper outer tooth of duplex tooth A. If the offset of position measurement head 141 exceeds a threshold, the duplex tooth positional accuracy is unqualified.

[0025] During the position detection process, the precise positioning head 121 not only finds the middle position of the two adjacent teeth below the double tooth, but also corrects the position of the double tooth A, thereby significantly improving the efficiency and accuracy of double tooth detection.

[0026] The outer diameter of the axial positioning column 31 is 0.02-0.06 mm smaller than the inner diameter of the double tooth A. The tail end of the first servo sliding seat 12 is connected to a damping spring that weakens the feeding force of the first servo sliding seat. The elastic coefficient of the damping spring is 2-6 mm / N.

[0027] The outer diameter of the axial positioning column 31 is 0.02-0.06mm smaller than the inner diameter of the double gear, so that the maximum linear movement distance of the double gear is 0.02-0.06mm. In order to enable the double gear to rotate, the double gear cannot be in contact with the axial positioning column 31, a damping spring is added behind the first servo sliding seat 12, and the elastic coefficient of the damping spring is selected to be 2-6mm / N. Before detection, the initial potential energy of the damping spring needs to be adjusted to ensure that the force of the precise positioning head 121 is not too large to cause the double gear to be stuck and unable to rotate, and also to maintain a certain pre-tightening force of the double gear to avoid rotation of the double gear during subsequent measurement of the position degree.

[0028] As shown in Figure 2 , the position degree detection assembly 1 further comprises a quick advancing frame 11 and a quick advancing slide, the quick advancing frame 11 is assembled on the quick advancing slide, the first servo sliding seat 12 and the second servo sliding seat 13 are installed on the quick advancing frame 11, and the second servo sliding seat 13 is directly above the first servo sliding seat 12. The quick advancing of the quick advancing frame 11 can enable the precise positioning head 121 and the position degree detection head 141 to quickly approach the outer tooth position of the double gear A.

[0029] As shown in Figure 4 , a blowing mechanism is arranged outside the position degree detection seat 3, the blowing mechanism comprises a blowing sleeve 32 arranged outside the position degree detection seat 3, a plurality of air outlet fins 33 are arranged at the top of the blowing sleeve 32, each air outlet fin 33 is provided with two air outlets, one air outlet is inside the air outlet fin 33 and faces the position degree detection seat 3, and the other air outlet is at the top of the air outlet fin and faces upward. The blowing sleeve 32 is provided with an air duct 34, one end of the air duct 34 is communicated with the air outlet, and the other end is connected with a blowing air pipe. The blowing sleeve 32 blows each position of the double gear at the same time to avoid the influence of adhesion on the detection accuracy.

[0030] As shown in Figure 3 , the second servo sliding seat 13 is connected with an adjusting frame 142, the adjusting frame 142 is provided with an adjusting lead screw, the adjusting lead screw is installed with an adjusting seat 145 driven by a motor, the adjusting seat 145 is connected with a supporting arm 143, and lateral deflection blocks 144 are connected between the supporting arm 143 through springs on the left and right sides of the adjusting frame 142. The supporting arm 143 is fixedly connected with the adjusting seat 145, and the adjusting seat 145 drives the supporting arm 143 to move left and right. When the position degree detection head offset exceeds the threshold range during the detection accuracy correction process by the standard double gear, the adjusting seat 145 is directly driven by the motor to move left and right to eliminate the offset, and the automatic correction of the position degree detection is completed.

[0031] As shown in Figure 1As shown, the other side of the position degree detection seat 3 is provided with a gear end face size detection mechanism, including a plurality of end face measurement sensors 21 for detecting different end face sizes of the double gear, and a stand 22 supporting the end face measurement sensors, the bottom of the stand 22 is slidingly connected with an end face measurement track 23, and the stand 22 is driven by electricity to slide on the end face measurement track 23, so that the end face measurement sensor 21 is close to or away from the double gear end face position.

[0032] Embodiment 2 The embodiment discloses a position degree detection method based on the structure of embodiment 1, comprising the following steps. Step one: place the double gear on the position degree detection seat, and constrain the double gear in the axial direction through the axial positioning column.

[0033] Step two: let the first servo sliding seat drive the precise positioning head to approach the outer teeth below the double gear, and insert the precise positioning head between two adjacent teeth on the outer teeth, in the process of gradually pushing the precise positioning head, if the precise positioning head is not aligned with the middle position of the two adjacent teeth of the double gear, slightly push the double gear to rotate by using the forward moving force of the precise positioning head, until the precise positioning head abuts against the middle point of the two adjacent teeth, and the double gear no longer rotates under the limitation of the precise positioning head, and the precise positioning is completed.

[0034] Step three: let the second servo sliding seat drive the position degree measurement head to gradually approach the outer teeth above the double gear, in the process that the position degree measurement head moves forward and abuts against the middle point of the two adjacent teeth, measure the deviation of the position degree measurement head by the displacement sensor, and the position degree detection of the double gear is completed.

[0035] Further comprising the steps of periodically correcting the feeding force of the precise positioning head, and adjusting the damping spring behind the first servo sliding seat, so that the feeding process of the precise positioning head does not cause the double gear to tilt.

[0036] Further comprising the steps of adjusting the position deviation of the position degree measurement head, specifically comprising the following steps: place the standard double gear on the position degree detection seat, detect the standard double gear in the manner of steps two and three, if it is detected that the left-right horizontal displacement distance of the position degree measurement head exceeds the preset value, start the motor on the adjusting seat, drive the position measurement head to horizontally displace a correction amount in the opposite direction, and let the position degree measurement head face the middle point of the two adjacent teeth above the double gear.

[0037] Between step one and step two, further comprising the steps of blowing the double gear, and using the blowing mechanism outside the position degree detection seat to pass the airflow with a pressure of 0.5-0.8 MPa into the blowing pipe, comprehensively clean the two tooth surfaces of the double gear in the circumferential direction, and avoid that foreign matters interfere with the measurement.

[0038] The above-mentioned are only embodiments of the present application, and common technical solutions and / or common knowledge of the scheme are not described in detail. It should be pointed out that, for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the patent. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A double-gear position detection device for new energy vehicles, comprising a mounting platform, a position detection seat fixedly mounted on the mounting platform, an axial positioning column provided at the center of the position detection seat, and a position detection assembly mounted on one side of the position detection seat, characterized in that: The position detection assembly includes a first servo sliding seat, a second servo sliding seat, a precise positioning head and a position measuring head. The precise positioning head is installed on the first servo sliding seat. The second servo sliding seat is installed with an elastic offset disk. The front end of the elastic offset disk is connected to a lateral deflection block through two symmetrical springs on the left and right. The position measuring head is installed at the front end of the lateral deflection block. The left and right sides of the lateral deflection block are constrained by spring elastic force. The initial position of the position measuring head is collinear with the positive projection of the precise positioning head. The elastic offset disk is also provided with a displacement sensor that senses the deflection of the measuring head. The first servo sliding seat drives the precise positioning head to approach one of the outer teeth of the double teeth, and the second servo sliding seat drives the position measuring head to approach the other outer tooth of the double teeth.

2. The double-gear position detection device for new energy vehicles according to claim 1, characterized in that: The outer diameter of the axial positioning column is 0.02-0.06 mm smaller than the inner diameter of the double-toothed gear. The tail end of the first servo sliding seat is connected to a damping spring that weakens the feed force of the first servo sliding seat. The elastic coefficient of the damping spring is 2-6 mm / N.

3. The double gear position detection device for new energy vehicles according to claim 2, characterized in that: The position detection assembly also includes a fast propulsion frame and a fast propulsion slide. The fast propulsion frame is assembled on the fast propulsion slide. The fast propulsion frame is powered by a motor. The first servo sliding seat and the second servo sliding seat are installed on the fast propulsion frame. The second servo sliding seat is directly above the first servo sliding seat.

4. The double gear position detection device for new energy vehicles according to claim 3, characterized in that: A purge mechanism is provided on the outside of the position detection seat, and the purge mechanism includes a purge sleeve that is ringed on the outside of the position detection seat. A plurality of air outlet plates are ringed on the top of the purge sleeve, and each air outlet plate is provided with two air outlets. One air outlet is located on the inside of the air outlet plate, and the air outlet is facing the position detection seat. The other air outlet is located on the top of the air outlet plate, and the air outlet faces upward. An air duct is provided in the purge sleeve, one end of the air duct is connected to the air outlet, and the other end is connected to the purge air pipe.

5. The double-gear position detection device for new energy vehicles according to claim 4, characterized in that: An adjustment frame is connected above the second servo sliding seat, and an adjustment screw is provided on the adjustment frame. An adjustment seat driven by a motor is installed on the adjustment screw. The adjustment seat is connected to a support arm. The left and right sides of the lateral deflection block are connected between the support arms through springs. The support arm is fixedly connected to the adjustment seat, and the adjustment seat drives the support arm to move left and right.

6. The double gear position detection device for new energy vehicles according to claim 5, characterized in that: A gear end face size detection mechanism is provided on the other side of the position detection seat, including multiple end face measurement sensors for detecting different end face sizes of the double teeth, and a stand supporting the end face measurement sensor. The bottom of the stand is slidably connected to an end face measurement track, and the stand is electrically driven to slide on the end face measurement track, allowing the end face measurement sensor to approach or move away from the end face position of the double teeth.

7. A method for detecting the position accuracy of a double-linked gear of a new energy vehicle, applicable to the double-linked gear position accuracy detection device of a new energy vehicle according to claim 6, characterized in that: The method includes the following steps: Step 1: Place the duplex gear on the position detection seat and constrain the duplex gear in the axial direction through the axial positioning column; Step 2: Let the first servo sliding seat drive the precise positioning head to approach the outer tooth at the bottom of the duplex gear, and insert the precise positioning head between two adjacent teeth on the outer tooth. In the process of gradually advancing the precise positioning head, if the precise positioning head is not aligned with the middle position of the two adjacent teeth of the duplex gear, use the force of the forward movement of the precise positioning head to slightly push the duplex gear to rotate until the precise positioning head is against the middle point of the two adjacent teeth. Under the restriction of the precise positioning head, the duplex gear no longer rotates, and the precise positioning is completed; Step three: Let the second servo slide drive the position measuring head to gradually approach the upper outer tooth of the double tooth. When the position measuring head moves forward and contacts the middle point between two adjacent teeth, the displacement sensor is used to measure the offset of the position measuring head to complete the double tooth position detection.

8. The method for detecting the position of double gears of new energy vehicles according to claim 7, characterized in that: In step 2, it also includes regularly calibrating the feed force of the precision positioning head and adjusting the damping spring behind the first servo slide seat so that the double-linked teeth will not tilt during the feeding process of the precision positioning head.

9. The method for detecting the position of double gears of a new energy vehicle according to claim 8, characterized in that: It also includes the step of adjusting the position deviation of the position measuring head, specifically including: placing the standard double gear on the position detection seat, detecting the standard double gear in accordance with the method of steps 2 and 3; if it is detected that the distance of the left and right lateral movement sent by the position measuring head exceeds the preset value, starting the motor on the adjustment seat to drive the position measuring head to move in the opposite direction of the lateral movement by a correction amount, so that the position measuring head is facing the middle point of the two adjacent teeth above the double gear.

10. The method for detecting the position of double gears of new energy vehicles according to claim 8, characterized in that: Between step one and step two, the double teeth are also purged. A purging mechanism is provided on the outside of the position detection seat, and an air flow of 0.5~0.8MPa is introduced into the purging air pipe to comprehensively clean the circumference of the two tooth surfaces of the double teeth to avoid interference with the measurement by foreign matter.

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