Device and method for detecting gear shaft of automobile steering device

Abstract

The invention relates to a detection device and a detection method, in particular to an automobile steering device gear shaft detection device and a detection method. The detection device comprises a base, wherein a supporting seat is arranged on the base; a limiting plate is arranged at the end of the base; a phase angle detector is arranged on one side of the base; and an end detector is arranged above the base. The detection device can detect the gear shaft assembled on the steering gear, and through multiple detections, the detection accuracy can be ensured, the phase angle, the R arc and the flat square of the gear shaft are qualified, the normal installation of the steering gear can be effectively ensured, and the connection between the steering gear and the intermediate shaft and the steering wheel can be ensured, so that the assembly efficiency of the whole vehicle can be effectively improved; and the production cost of the automobile is effectively reduced. The detection device can be adjusted, so that the detection device can be suitable for steering gears of different models, the application range of the detection device is effectively expanded, and the universality is improved. The detection tool solves the problem that an existing detection tool can only detect the gear shaft independently, and is especially suitable for detection of the gear shaft assembled on a steering gear.

Description

Technical Field

[0001] The invention relates to a detection device and a detection method, and in particular to a detection device and a detection method for a gear shaft of a steering gear of an automobile. Background Art

[0002] The steering gear includes a housing, a rack and a pinion shaft. The pinion shaft is tilted, and the bottom end of the pinion shaft meshes with the rack. An R arc is provided on one side of the top end of the pinion shaft, and a flat square is provided on the other side of the top end of the pinion shaft. The installation angle of the input end of the steering gear pinion shaft of the car has a great influence on the assembly of the whole vehicle. When the angle is installed incorrectly or not in the middle position, it directly affects the installation of the intermediate shaft and the steering wheel, and then affects the assembly efficiency of the whole vehicle, resulting in an increase in the cost of the vehicle assembly plant. In order to reduce the cost of the upstream and downstream industrial chain of the automobile, it is necessary to test the automobile steering gear before it leaves the factory.

[0003] The patent application with announcement number CN209655961U discloses a gear shaft phase angle gauge, which includes a flat plate seat and a gauge seat, the upper surface of the flat plate seat is provided with a reference plane, the lower surface of the gauge seat is provided with a positioning plane that can be abutted against the reference plane, the front end surface of the gauge seat is provided with a fixing hole for inserting the gear segment of the gear shaft, the fixing hole is arranged parallel to the positioning plane, the upper surface of the gauge seat is provided with a threaded hole perpendicular to the fixing hole, the threaded hole is connected to the fixing hole, a positioning piece is threadedly connected in the threaded hole, a steel ball is arranged at the lower end of the positioning piece, and a baffle is detachably fixedly connected to the front end surface of the gauge seat, and the baffle has a blocking portion that blocks the gear segment of the gear shaft in the fixing hole. The gear shaft phase angle gauge has the advantages of improving the accuracy of gear shaft phase angle detection.

[0004] The above-mentioned inspection tool can detect the phase angle of the gear shaft of the automobile steering gear, but it detects the gear shaft alone. After the gear shaft is assembled, the connection and assembly of the gear shaft and the rack are also likely to affect the phase angle of the gear shaft. Therefore, it is necessary to redesign a detection device and detection method for the gear shaft of the automobile steering gear to solve the above-mentioned problem. Summary of the invention

[0005] The purpose of the present invention is to provide a detection device and method for the gear shaft of an automobile steering gear, which has a simple structure, is easy to use, and can accurately detect the gear shaft after the gear shaft is assembled to ensure that the steering gear can be assembled normally.

[0006] The technical solution of the present invention is: A detection device for a steering gear shaft of an automobile consists of a base, a support base, a limit plate, a phase angle detector and an end detector, and is characterized in that: the base is a rectangular plate-shaped body, and the support base is symmetrically installed on the long center axis of the base through a guide rail; the limit plate is installed on the end of the base through a fixing bolt; a phase angle detector is arranged on one side of the base; and an end detector is arranged above the base.

[0007] The support seat is composed of a middle slider, a support fixing plate, a support plate and a positioning pin. The middle slider is mounted with a support fixing plate, and the support plate is installed on the support fixing plate by bolts. One end of the support plate is sloped, and a positioning pin is arranged on the sloped end surface of the support plate. The middle slider is slidably connected to the guide rail.

[0008] The support fixing plate is in an inverted U shape, and both end ends of the support fixing plate are fixedly connected to the base through fixing screws.

[0009] The phase angle detector is composed of an edge slider, a heightening fixed plate, a heightening member, a supporting column, a limit sleeve and a long R arc detection pin. The edge slider is provided with a heightening fixed plate, and the heightening fixed plate is installed with a supporting column through the heightening member. The supporting column is inserted with a limit sleeve, and the limit sleeve is inserted with a long R arc detection pin; the edge slider is movably connected to the base through a guide rail; the two end ends of the heightening fixed plate are fixedly connected to the base through fixing bolts.

[0010] A rotating disk is arranged at the bottom of the supporting column, a rotating ring groove is arranged on the rotating disk, and the rotating disk is fixedly connected with the height-increasing member through the rotating ring groove and fixing bolts.

[0011] The support column is provided with a lifting slide, and the support columns on both sides of the lifting slide are provided with longitudinal positioning grooves; the limit sleeve and the long R arc detection pin are respectively provided with transverse positioning grooves, and the limit sleeve is fixedly connected to the support column by locking screws that pass through the longitudinal positioning groove and the transverse positioning groove in sequence.

[0012] The end detector is composed of a positioning sleeve, a detection block and a short R-arc detection pin. The positioning sleeve is provided with a detection block, and the detection block is plugged with a short R-arc detection pin.

[0013] The detection block is provided with a detection hole.

[0014] The bottom end of the positioning sleeve is provided with limiting claws in parallel.

[0015] A method for detecting a steering gear shaft of an automobile, characterized in that it comprises the following steps: 1) According to the steering gear model, adjust the distance between the support seat and the limit plate of the steering gear gear shaft detection device of the automobile, and the distance between the support seats at both ends of the guide rail; after the support seat is adjusted, adjust the horizontal position of the phase angle detector and the height and angle of the long R arc detection pin according to the steering gear model (when continuously detecting the same model, only the first detection is adjusted); 2) Insert the steering gear onto the positioning pin of the support seat to fix the steering gear; place the end of the steering gear rack against the limit plate; 3) Push the long R arc detection pin of the phase angle detector to insert the long R arc detection pin into the R arc of the steering gear gear shaft, detect the current between the long R arc detection pin and the steering gear shaft, detect the fit between the long R arc detection pin and the R arc of the steering gear shaft, and then detect the phase angle of the steering gear shaft through the long R arc detection pin; 4) Reset the long R arc detection pin and pull out the short R arc detection pin of the end detector; put the positioning sleeve on the gear shaft of the steering gear, so that the limiting claws at the bottom of the positioning sleeve are inserted on both sides of the steering gear housing reinforcement rib, and the positioning sleeve and the detection block are limited by the limiting claws cooperating with the steering gear housing reinforcement rib, and at the same time, the end of the steering gear gear shaft is inserted into the detection hole of the detection block; 5) Insert the short R arc detection pin into the detection block, detect the current between the short R arc detection pin and the steering gear gear shaft, detect the fit between the short R arc detection pin and the R arc of the steering gear gear shaft, and then detect the flat square and R arc of the gear shaft end; 6) Remove the end detector from the steering gear gear shaft. When both step 3) and step 5) are qualified, the inspection is passed and the steering gear that has passed the inspection is sent to the next process. When any one of step 3) and step 5) is unqualified, the inspection is unqualified and the steering gear that has failed the inspection is scrapped or reworked.

[0016] The detection standards in step 3) are: a. The long R arc detection pin can pass through the R arc of the steering gear shaft; b. The current between the long R arc detection pin and the steering gear shaft is within the process requirements; When both a and b are qualified, the test is qualified; when any one of a or b is unqualified, the test is unqualified.

[0017] The inspection standards in step 5) are: c. The positioning sleeve can be mounted on the gear shaft; d. The limit claw and the detection block can be installed in place respectively; e. The short R arc detection pin can be inserted in place; f. The current between the short R arc detection pin and the steering gear gear shaft is within the process requirements; When all cf items are qualified, the test is qualified; when any one cf item is unqualified, the test is unqualified.

[0018] The beneficial effects of the present invention are: The automobile steering gear gear shaft detection device can detect the gear shaft assembled on the steering gear, and through multiple detections, it can ensure accurate detection, ensure that the phase angle, R arc and flatness of the gear shaft are qualified, and can effectively guarantee the normal installation of the steering gear, and ensure the connection between the steering gear and the intermediate shaft and the steering wheel, thereby effectively improving the assembly efficiency of the whole vehicle and effectively reducing the production cost of the automobile. The detection device can be adjusted so that it can be applied to different models of steering gears, effectively expanding its scope of application and improving universality. It solves the problem that the existing inspection tool can only detect the gear shaft alone, and is particularly suitable for the detection of the gear shaft assembled on the steering gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the support seat of the present invention; Figure 3 is a schematic structural diagram of a phase angle detector of the present invention; Figure 4 It is a schematic diagram of the structure of the end detector of the present invention; Figure 5 is a top view schematic diagram of the detection block of the present invention; Figure 6 It is a cross-sectional schematic diagram of the detection block of the present invention.

[0020] In the figure: 1. base, 2. limit plate, 3. guide rail, 4. middle slider, 5. support fixing plate, 6. support plate, 7. positioning pin, 8. edge slider, 9. height increasing fixing plate, 10. height increasing member, 11. support column, 12. limit sleeve, 13. long R arc detection pin, 14. rotating disk, 15. rotating ring groove, 16. lifting slide groove, 17. longitudinal positioning groove, 18. transverse positioning groove, 19. locking screw, 20. positioning sleeve, 21. detection block, 22. short R arc detection pin, 23. detection hole, 24. limit claw, 25. steering gear. DETAILED DESCRIPTION

[0021] The automobile steering gear gear shaft detection device is composed of a base 1, a support seat, a limit plate 2, a phase angle detector and an end detector. The base 1 is a rectangular plate-shaped body. The support seat is symmetrically installed on the long central axis of the base 1 through a guide rail 3 to fix the position of the steering gear through the support seat. The end of the base 1 is installed with a limit plate 2 through a fixing bolt to limit the position of the end of the steering gear rack through the limit plate 2, and then limit the gear shaft through the rack. A phase angle detector is arranged on one side of the base 1 to detect the phase angle and R arc of the gear shaft through the phase angle detector. An end detector is arranged above the base 1 to detect the flat square of the end of the gear shaft through the end detector and further detect the R arc. Since the gear shaft is assembled on the steering gear during the detection of the gear shaft, the influence of the steering gear rack and the housing on the gear shaft can be comprehensively detected to ensure that the gear shaft can be correctly connected with the intermediate shaft and the steering wheel when the steering gear is installed, thereby effectively improving the assembly efficiency of the steering gear and reducing the assembly cost of the whole vehicle.

[0022] The support seat is composed of a middle slider 4, a support fixing plate 5, a support plate 6 and a positioning pin 7. The middle slider 4 is provided with a support fixing plate 5, and the support fixing plate 5 is provided with a support plate 6 by fixing bolts. One end of the support plate 6 is in a slope shape, and a positioning pin 7 is arranged on the end surface of the sloped support plate 6; the middle slider 4 is slidably connected with the guide rail 3. The support fixing plate 5 is in an inverted U shape, and the two end ends of the support fixing plate 5 are fixedly connected with the base 1 by fixing screws. The function of the positioning pin 7 is to fix the position of the steering gear housing by inserting the positioning pin 7 into the steering gear housing lug, and then fix the position of the gear shaft, so that the gear shaft is fixed in the horizontal and vertical directions, so as to facilitate detection. The support seat can slide on the base 1 through the middle slider 4, and then the position of the support seat can be adjusted, so that the position of the support seat is adapted to the steering gear, so that it can be adapted to different types of steering gears through adjustment, and effectively improve universality.

[0023] The phase angle detector is composed of an edge slider 8, a heightening fixed plate 9, a heightening member 10, a support column 11, a limit sleeve 12 and a long R arc detection pin 13. The edge slider 8 is provided with a heightening fixed plate 9, and a support column 11 is installed on the heightening fixed plate 9 through the heightening member 10. The limit sleeve 12 is inserted on the support column 11, and the long R arc detection pin 13 is inserted on the limit sleeve 12; the edge slider 8 is movably connected to the base 1 through the guide rail 3; the two ends of the heightening fixed plate 9 are fixedly connected to the base 1 through fixing bolts. Since the angle, height and horizontal position of the long R arc detection pin 13 are fixed during the detection process, the angle (i.e., phase angle), height and horizontal position of the R arc at the end of the steering gear gear shaft can be detected through the medium-long R arc detection pin 13, and then the phase angle, height and horizontal position of the gear shaft can be detected. Since the phase angle detector can adjust its position on the base 1 through the edge slider 8, the phase angle detector can detect different types of steering gears.

[0024] A rotating disk 14 is provided at the bottom of the support column 11, and a rotating ring groove 15 is provided on the rotating disk 14. The rotating disk 14 is fixedly connected to the height-increasing member 10 through the rotating ring groove 15 and the fixing bolts. The function of the rotating disk 14 is to rotate and adjust the support column 11 through the rotating ring groove 15, and then rotate and adjust the long R arc detection pin 13, and then adjust the angle of the long R arc detection pin 13 with the steering gear gear shaft in the horizontal direction, thereby adjusting the detection angle of the long R arc detection pin 13.

[0025] The support column 11 is provided with a lifting chute 16, and the support column 11 on both sides of the lifting chute 16 is provided with a longitudinal positioning groove 17; the limit sleeve 12 and the long R arc detection pin 13 are respectively provided with a transverse positioning groove 18, and the limit sleeve 12 is fixedly connected to the support column 11 by a locking screw 19 that passes through the longitudinal positioning groove 17 and the transverse positioning groove 18 in sequence. The function of the lifting chute 16 is to adjust the height and the angle of the limit sleeve 12 in the vertical direction through the lifting chute 16, and then adjust the height and the angle of the long R arc detection pin 13 in the vertical direction, thereby adjusting the detection height of the long R arc detection pin 13 and further adjusting the detection angle; by adjusting the horizontal position, height and angle of the long R arc detection pin 13, it can detect the gear shaft of different models of steering gears.

[0026] The end detector is composed of a positioning sleeve 20, a detection block 21 and a short R arc detection pin 22. The positioning sleeve 20 is provided with a detection block 21, and the detection block 21 is inserted with a short R arc detection pin 22. The function of the detection block 21 is to detect the end of the gear shaft through the detection block 21, detect the flatness of the end of the gear shaft, and further detect the R arc of the end of the gear shaft.

[0027] The detection block 21 is provided with a detection hole 23 to detect the flatness of the end of the gear shaft through the detection hole 23. When the end of the gear shaft can be inserted into the detection hole 23 and fits with the detection hole 23, the flatness of the gear shaft is qualified.

[0028] The bottom of the positioning sleeve 20 is provided with limit claws 24 in parallel, so as to limit the position of the positioning sleeve 20 through the limit claws 24, and then cooperate with the positioning sleeve 20 to further limit the position of the detection block 21, so as to ensure the detection of the detection block 21 accurately.

[0029] The detection method of the automobile steering gear shaft comprises the following steps: According to the steering gear model, adjust the distance between the support seat and the limit plate 2 of the automobile steering gear gear shaft detection device and the support seats at both ends of the guide rail; after the support seat is adjusted, adjust the horizontal position of the phase angle detector and the height and angle of the long R arc detection pin 13 according to the steering gear model (only the first detection is adjusted when the same model is continuously detected). Insert the steering gear on the positioning pin 7 of the support seat to fix the steering gear; place the end of the steering gear rack against the limit plate 2.

[0030] Push the long R arc detection pin 13 of the phase angle detector so that the long R arc detection pin 13 is inserted into the R arc of the steering gear gear shaft. By detecting the current between the long R arc detection pin 13 and the steering gear gear shaft, the degree of fit between the long R arc detection pin 13 and the R arc of the steering gear gear shaft is detected, and then the phase angle of the steering gear shaft is detected by the long R arc detection pin 13. The detection standard is: a. The long R arc detection pin 13 can pass through the R arc of the steering gear gear shaft; b. The current between the long R arc detection pin 13 and the steering gear gear shaft is within the process requirements; when both a and b are qualified, the detection is qualified; when any one of a and b is unqualified, the detection is unqualified. The closer the long R arc detection pin 13 fits the R arc of the gear shaft, the larger the contact area between the long R arc detection pin 13 and the R arc of the gear shaft, and the smaller the resistance between the long R arc detection pin 13 and the gear shaft, so that under the same voltage, the current between the long R arc detection pin 13 and the gear shaft is larger.

[0031] Reset the long R arc detection pin 13 and pull out the short R arc detection pin 22 of the end detector. Put the positioning sleeve 20 on the gear shaft of the steering gear, so that the limiting claws 24 at the bottom of the positioning sleeve 20 are inserted on both sides of the steering gear housing reinforcement ribs, and the limiting claws 24 cooperate with the steering gear housing reinforcement ribs to limit the positioning sleeve 20 and the detection block 21, and at the same time, the end of the steering gear gear shaft is inserted into the detection hole 23 of the detection block 21. Insert the short R arc detection pin 22 into the detection block 21, and detect the degree of fit between the short R arc detection pin 22 and the steering gear gear shaft by detecting the current between the short R arc detection pin 22 and the steering gear gear shaft, and then detect the flat square and R arc of the gear shaft end. The detection standards are: c. The positioning sleeve 20 can be put on the gear shaft; d. The limiting claws 24 and the detection block 21 can be installed in place respectively; e. The short R arc detection pin 22 can be inserted in place; f. The current between the short R arc detection pin 22 and the steering gear gear shaft is within the process requirements. When all cf items are qualified, the test is qualified; when any one cf item is unqualified, the test is unqualified.

[0032] The end detector is removed from the steering gear gear shaft. When both the phase angle detector and the end detector are qualified, the inspection is passed and the steering gear that has passed the inspection is sent to the next process. When any one of the phase angle detector and the end detector is unqualified, the inspection is failed and the steering gear that has failed the inspection is scrapped or reworked.

[0033] The automobile steering gear gear shaft detection device can detect the gear shaft assembled on the steering gear, and through multiple detections, it can ensure accurate detection, ensure that the phase angle, R arc and flatness of the gear shaft are qualified, and can effectively guarantee the normal installation of the steering gear, and ensure the connection between the steering gear and the intermediate shaft and the steering wheel, thereby effectively improving the assembly efficiency of the whole vehicle and effectively reducing the production cost of the automobile. The detection device can be adjusted so that it can be applied to different models of steering gears, effectively expanding its scope of application and improving universality. It solves the problem that the existing inspection tool can only detect the gear shaft alone, and is particularly suitable for the detection of the gear shaft assembled on the steering gear.

Claims

1. A method for detecting a steering gear shaft of an automobile, characterized in that: The following steps are involved: 1) According to the steering gear model, the spacing between the support seat and the limit plate (2) of the automobile steering gear gear shaft detection device and the spacing between the support seats at both ends of the guide rail are adjusted; after the support seat is adjusted, the horizontal position of the phase angle detector and the height and angle of the long R arc detection pin (13) are adjusted according to the steering gear model; 2) Insert the steering gear onto the positioning pin (7) of the support seat to fix the steering gear; place the end of the steering gear rack against the limit plate (2); 3) pushing the long R arc detection pin (13) of the phase angle detector so that the long R arc detection pin (13) is inserted into the R arc of the steering gear gear shaft, and detecting the current between the long R arc detection pin (13) and the steering gear gear shaft to detect the degree of fit between the long R arc detection pin (13) and the R arc of the steering gear gear shaft, thereby detecting the phase angle of the steering gear shaft through the long R arc detection pin (13); 4) Reset the long R arc detection pin (13) and pull out the short R arc detection pin (22) of the end detector; sleeve the positioning sleeve (20) onto the gear shaft of the steering gear, so that the limiting claws (24) at the bottom end of the positioning sleeve (20) are inserted into the two sides of the steering gear housing reinforcement rib, and the positioning sleeve (20) and the detection block (21) are limited by the limiting claws (24) in cooperation with the steering gear housing reinforcement rib, and at the same time, the end of the steering gear gear shaft is inserted into the detection hole (23) of the detection block (21); 5) Insert the short R arc detection pin (22) into the detection block (21), detect the current between the short R arc detection pin (22) and the steering gear gear shaft, detect the fit between the short R arc detection pin (22) and the R arc of the steering gear gear shaft, and then detect the flat square and R arc of the gear shaft end; 6) Remove the end detector from the steering gear gear shaft. When both step 3) and step 5) are qualified, the inspection is passed and the steering gear that has passed the inspection is sent to the next process. When any one of step 3) and step 5) is unqualified, the inspection is unqualified and the steering gear that has failed the inspection is scrapped or reworked.

2. The method for detecting a steering gear shaft of an automobile according to claim 1, characterized in that: The detection standards in step 3) are: a. the long R arc detection pin (13) can pass through the R arc of the steering gear shaft; b. the current between the long R arc detection pin (13) and the steering gear shaft is within the process requirement range; When both a and b are qualified, the test is qualified; when any one of a or b is unqualified, the test is unqualified.

3. The automobile steering gear shaft detection device according to claim 1, characterized in that: The inspection standards in step 5) are: c. the positioning sleeve (20) can be mounted on the gear shaft; d. the limiting claw (24) and the inspection block (21) can be installed in place respectively; e. The short R arc detection pin (22) can be inserted into place; f. The current between the short R arc detection pin (22) and the steering gear shaft is within the process requirements; When all cf items are qualified, the test is qualified; when any one cf item is unqualified, the test is unqualified.

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