Comprehensive inspection fixture for forgings of steering knuckle with tie rod arm

Abstract

The present invention relates to the technical field of dimension detection of steering knuckle forgings, and in particular to a comprehensive inspection tool for steering knuckle forgings with tie rod arms, which is used to detect the dimensions of steering knuckle forgings with tie rod arms, and the comprehensive inspection tool for steering knuckle forgings with tie rod arms comprises: a supporting mechanism, a positioning mechanism and a detecting mechanism. In this scheme, the steering knuckle to be detected is placed on the supporting mechanism, the steering knuckle to be detected is fixed by a first positioning part, a second positioning part and a third positioning part, and the steering knuckle is detected by a first detecting part, a second detecting part and a third detecting part. In this scheme, the key control dimensions of the steering knuckle forgings with tie rod arms can be detected at one time, which can greatly improve the detection efficiency of the steering knuckle and avoid errors and mistakes caused by manual detection. In addition, the detection accuracy is improved, while the manual input for detection is reduced, and the labor cost of detection is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of dimension detection of a steering knuckle forging, in particular to a comprehensive inspection tool for a steering knuckle forging with a tie rod arm. Background Art

[0002] The steering knuckle, also known as the "ram's horn", is one of the important parts of the steering axle of the car. It can make the car run stably and transmit the driving direction sensitively. The function of the steering knuckle is to transmit and bear the front load of the car, support and drive the front wheel to rotate around the kingpin to turn the car. When the car is running, it is subjected to variable impact loads, so it is required to have high strength.

[0003] Among them, the structure of the vertical forged steering knuckle forging with tie rod arm is relatively complex, and the key dimensions have a great impact on the final processing quality of the product, and are the dimensions that need to be focused on forging. The key dimensions include: the position dimension of the tie rod arm, which is very easy to cause deformation during the forging and heat treatment process, resulting in black skin on the end face of the tie rod ball head after processing or the wall thickness of the tapered hole exceeding the lower limit, and the workpiece is scrapped; the length dimension of the steering knuckle spindle, which will affect the processing efficiency if it is too long, and will produce black skin if it is too short, resulting in the scrapping of the workpiece; the verticality of the steering knuckle spindle and the brake positioning stop, this dimension deviation will directly affect the machining positioning, causing the horn and the tie rod arm to produce machined black skin, resulting in unqualified product processing. The existing detection methods all rely on manual use of height gauges and vernier calipers, which are complicated to operate and have low detection efficiency. In addition, the skill level of the detection personnel directly affects the accuracy of the detection, resulting in unstable detection results. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a comprehensive inspection fixture for a steering knuckle forging with a tie rod arm, so as to solve the problems of low inspection efficiency and failure to ensure inspection accuracy in the prior art.

[0005] In order to achieve the above-mentioned object and other related objects, the present invention provides a comprehensive inspection tool for a steering knuckle forging with a tie rod arm, which is used to detect the size of the steering knuckle forging with a tie rod arm, wherein a tie rod ball head is provided at the front end of the tie rod arm, and is characterized in that the comprehensive inspection tool for the steering knuckle forging with a tie rod arm comprises:

[0006] A support mechanism, used for supporting the steering knuckle to be tested, wherein the support mechanism is provided with a support rod;

[0007] A positioning mechanism, comprising a first positioning portion for abutting against an inner reference surface of a steering knuckle tie rod arm to position the steering knuckle in the Y-axis direction, a second positioning portion for abutting against an end surface of a steering knuckle brake positioning stop to position the steering knuckle in the Z-axis direction, and a third positioning portion for abutting against a peripheral side of a steering knuckle main shaft to position the steering knuckle in the X-axis direction and the Y-axis direction, wherein the first positioning portion is arranged on the support rod, and the second positioning portion and the third positioning portion are respectively arranged on the support mechanism;

[0008] The detection mechanism includes a first detection part for detecting the horizontal displacement size and vertical displacement size of the steering knuckle tie rod arm, a second detection part for detecting the verticality of the steering knuckle main shaft and a third detection part for detecting the length of the steering knuckle main shaft. The first detection part is arranged on the support rod, and the second detection part and the third detection part are respectively arranged on the support mechanism.

[0009] Optionally, the second positioning portion includes a stepped hole arranged on the supporting mechanism, the steering knuckle brake positioning stop is arranged in the stepped hole, and the end surface of the steering knuckle brake positioning stop is abutted against the inner hole end surface of the stepped hole to position the steering knuckle in the Z-axis direction.

[0010] Optionally, the supporting mechanism includes a first reference panel, a second reference panel and four columns, the columns are arranged between the first reference panel and the second reference panel, the step hole is arranged on the first reference panel, the second detection part, the third positioning part and the third detection part are arranged on the second reference panel, and the support rod is arranged on the first reference panel.

[0011] Optionally, a V-shaped groove whose width gradually narrows in the horizontal direction is provided along the edge of the first reference panel to the center point thereof, the V-shaped groove runs through the vertical direction of the first reference panel, and the V-shaped groove is connected to the step hole.

[0012] Optionally, the first detection part includes a first dial indicator and a second dial indicator, the probe of the first dial indicator is against the highest point of the steering knuckle tie rod ball head along the Z-axis direction to detect the vertical displacement size of the steering knuckle tie rod arm, and the probe of the second dial indicator is against the side surface of the steering knuckle tie rod ball head along the Y-axis direction to detect the horizontal displacement size of the steering knuckle tie rod arm.

[0013] Optionally, a first mounting position and a second mounting position are provided on the support mechanism, the support rod is provided at any one of the first mounting position and the second mounting position, the support rods at different mounting positions are symmetrically arranged along the perpendicular bisector of the line connecting the first mounting position and the second mounting position, the second dial indicators at different mounting positions are symmetrically arranged along the perpendicular bisector of the line connecting the first mounting position and the second mounting position, and the first positioning parts at different mounting positions are symmetrically arranged along the perpendicular bisector of the line connecting the first mounting position and the second mounting position.

[0014] Optionally, the third positioning portion includes two first V-shaped clamps with openings arranged opposite to each other, and the comprehensive inspection fixture with a tie rod arm steering knuckle forging also includes a horizontal sliding mechanism, and the two first V-shaped clamps are slidably arranged on the supporting mechanism through the horizontal sliding mechanism, and the steering knuckle main shaft is arranged between the two first V-shaped clamps, and the inner sides of the openings of the two first V-shaped clamps are respectively abutted against the circumferential sides of the steering knuckle main shaft to position the steering knuckle in the X-axis direction and the Y-axis direction.

[0015] Optionally, the horizontal sliding mechanism includes a guide rail and two groups of sliding components arranged on the supporting mechanism, the sliding component includes a slider slidably arranged on the guide rail, a bracket arranged on the slider, and a second V-shaped clamp arranged on the bracket, the openings of the two second V-shaped clamps are arranged opposite to each other, the two first V-shaped clamps are arranged one-to-one on the two brackets, and the second detection part includes two third dial indicators, the two third dial indicators are horizontally arranged one-to-one on the two second V-shaped clamps, and the probes of the two third dial indicators are respectively abutted against the circumferential side of the steering knuckle spindle to detect the verticality of the steering knuckle spindle.

[0016] Optionally, the steering knuckle integrated inspection fixture also includes an adjustment mechanism for driving the horizontal sliding mechanism to slide horizontally, the adjustment mechanism includes a handle and two connecting rods, the handle is rotatably connected to the support mechanism, the first ends of the two connecting rods are respectively rotatably connected to the two brackets, and the second ends of the two connecting rods are respectively rotatably connected to different ends of the handle.

[0017] Optionally, the third detection part includes a lever, a gravity detection rod and a guide rod, the fulcrum of the lever is arranged on the support mechanism, the first end of the lever is abutted against the end of the steering knuckle main shaft, the first end of the gravity detection rod passes through the support mechanism along the Z-axis direction, and a limit scale is arranged on the first end of the gravity detection rod, a through groove is opened along the width direction of the guide rod, the second end of the gravity detection rod is passed through the guide rod and abutted vertically against the second end of the lever in the through groove.

[0018] As described above, the comprehensive inspection fixture for the forging of a tie rod arm steering knuckle of the present invention has the following beneficial effects:

[0019] This solution places the steering knuckle to be tested on the support mechanism, fixes the steering knuckle to be tested by the first positioning part, the second positioning part and the third positioning part, and tests the steering knuckle by the first testing part, the second testing part and the third testing part. This solution can realize the one-time testing of the key control dimensions of the steering knuckle forging with the tie rod arm, greatly improve the testing efficiency of the steering knuckle, and avoid errors and mistakes caused by manual testing. It also improves the accuracy of the test, while reducing the labor input and labor cost of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the bracket in the first installation position according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of an application of the bracket of an embodiment of the present invention when it is in the first installation position for steering knuckle detection;

[0022] Figure 3 A schematic diagram of the overall structure of the bracket according to an embodiment of the present invention when in the second installation position;

[0023] Figure 4 This is a schematic diagram of the application of the bracket of the embodiment of the present invention when it is in the second installation position for steering knuckle detection;

[0024] Figure 5 This is a schematic diagram of the overall structure of the bracket in the first installation position at another angle according to an embodiment of the present invention;

[0025] Figure 6 It is a schematic diagram of the horizontal displacement dimensions of the steering knuckle tie rod arm according to an embodiment of the present invention;

[0026] Figure 7 It is a schematic diagram of the vertical displacement dimension and the main axis dimension of the steering knuckle tie rod arm according to an embodiment of the present invention.

[0027] Part Number Description

[0028] 1-first dial indicator; 2-second dial indicator; 3-second positioning part; 4-first V-shaped clamp; 5-second V-shaped clamp; 6-third dial indicator; 7-lever; 8-limit scale; 9-gravity detection rod; 10-guide rod; 11-support rod; 12-guide rail; 13-slider; 14-bracket; 15-handle; 16-connecting rod; 17-first reference panel; 18-second reference panel; 19-column; 20-steering knuckle; 21-first positioning part; 22-height dimension detection head; 23-first installation position; 24-second installation position; 201-brake positioning stop; 202-oil seal; 203-inner bearing neck; 204-outer bearing neck; 205-short arm; 206-flange; 207-tie rod arm; 208-tie rod ball head. DETAILED DESCRIPTION

[0029] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0030] It should be noted that the diagram provided in the present embodiment only illustrates the basic concept of the present invention in a schematic manner, so the diagram only shows the components related to the present invention rather than drawing according to the number, shape and size of the components during actual implementation. The type, quantity and ratio of each component during actual implementation can be a random change, and the component layout type may also be more complicated. The structure, ratio, size, etc. illustrated in the drawings of the present specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can implement, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effect that the present invention can produce and the purpose that can be achieved. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of narration, and are not used to limit the scope of the present invention. The change or adjustment of its relative relationship should also be regarded as the scope of the present invention without substantially changing the technical content.

[0031] See also Figures 1 to 7The present embodiment provides a comprehensive inspection fixture for a steering knuckle forging with a tie rod arm, which is used to inspect the steering knuckle forging with a tie rod arm. The steering knuckle forging with a tie rod arm is a vertical steering knuckle forging with a tie rod arm, and the steering knuckle forging with a tie rod arm is referred to as a steering knuckle 20 for short in the following. A tie rod ball head 208 is provided at the front end of the tie rod arm 207. The comprehensive inspection fixture for the steering knuckle forging with a tie rod arm includes: a supporting mechanism for supporting the steering knuckle 20 to be inspected, a positioning mechanism for positioning the steering knuckle, and a detection mechanism for detecting the size of the steering knuckle. The steering knuckle 20 includes a brake positioning stop 201, a flange 206, an oil seal 202, an inner bearing journal 203, an outer bearing journal 204, a short arm 205, a tie rod ball head 208, and a tie rod arm 207. The main shaft of the steering knuckle 20 includes an oil seal 202, an inner bearing journal 203, and an outer bearing journal 204.

[0032] like Figure 2 and Figure 4 As shown, the positioning mechanism includes a first positioning portion 21, a second positioning portion 3 and a third positioning portion, and the first positioning portion 21, the second positioning portion 3 and the third positioning portion are respectively arranged on the supporting mechanism. The first positioning portion 21 is arranged horizontally, and its left end abuts against the inner reference surface of the tie rod arm 207 of the steering knuckle 20 to position the steering knuckle 20 in the Y-axis direction. The top end of the second positioning portion 3 abuts against the bottom end of the brake positioning stop 201 of the steering knuckle 20 to position the steering knuckle 20 in the Z-axis direction. The third positioning portion is slidably arranged on the supporting mechanism, and the inner side of the third positioning portion abuts against the oil seal 202 of the main shaft of the steering knuckle 20 to position the steering knuckle 20 in the X-axis direction and the Y-axis direction.

[0033] like Figure 6 and Figure 7 As shown, the detection mechanism includes a first detection part, a second detection part and a third detection part respectively arranged on the support mechanism, and the second detection part is slidably arranged on the support mechanism. The first detection part is used to detect the position size of the tie rod arm 207 of the steering knuckle 20, and the position size includes a horizontal displacement size M and a vertical displacement size H. The second detection part is used to detect the verticality N of the main shaft of the steering knuckle 20, and the verticality N is the verticality of the main shaft of the steering knuckle 20 relative to the brake positioning stop 201. The third detection part is used to detect the main shaft length L of the steering knuckle 20. The main shaft length includes the distance from the bottom end of the brake positioning stop 201 to the bottom end of the outer bearing journal 204.

[0034] In one embodiment, if Figures 1 to 4 As shown, the positioning end of the first positioning portion 21 is hemispherical in shape.

[0035] In one embodiment, if Figure 1 , Figure 3 and Figure 5As shown, the second positioning portion 3 includes a stepped hole opened on the supporting mechanism, the brake positioning stop 201 of the steering knuckle 20 is arranged in the stepped hole, and the bottom end surface of the brake positioning stop 201 is against the top end surface of the inner hole of the stepped hole to position the steering knuckle 20 in the Z-axis direction, and the inner hole of the stepped hole is a hole with a smaller diameter in the stepped hole. The structure of the stepped hole is simple, the processing cost is low, and the overall bloatedness of the inspection fixture is avoided. In addition, the structure of the stepped hole is consistent with the bottom structure of the brake positioning stop 201, which is convenient for positioning.

[0036] In one embodiment, if Figures 1 to 5 As shown, the first detection part includes a first dial gauge 1 and a second dial gauge 2. The support rod 11 includes a T-shaped rod arranged at the bottom, an L-shaped rod in the middle, and a cross bar at the top. The left bottom end of the T-shaped rod is arranged on the right top end of the support mechanism, the bottom end of the L-shaped rod is arranged on the right top end of the T-shaped rod, and one end of the cross bar is arranged on the top end of the L-shaped rod. The second dial gauge 2 is horizontally penetrated in the upper part of the L-shaped rod. The probe of the second dial gauge 2 passes through the L-shaped rod. The probe of the second dial gauge 2 faces the same direction as the cross bar, and the probe of the second dial gauge 2 abuts against the inner side of the tie rod ball head 208 of the steering knuckle 20. The second dial gauge 2 is used to detect the horizontal displacement dimension M of the tie rod arm 207 of the steering knuckle 20. The first dial gauge 1 is vertically arranged on the middle part of the crossbar, the probe of the first dial gauge 1 is arranged downward to penetrate the crossbar, and the probe of the first dial gauge 1 is against the top of the height dimension detection head 22, and the first positioning part 21 is horizontally arranged and penetrates the left top of the T-shaped rod. The height dimension detection head 22 is arranged horizontally, one end of which is arranged on the upper part of the L-shaped rod, and the other end is arranged on the bottom end of the crossbar. The bottom of the height dimension detection head 22 is provided with a downward protrusion, the top of the protrusion is against the top of the tie rod ball head 208, and the first dial gauge 1 and the height dimension detection head 22 are matched to detect the vertical displacement dimension H of the tie rod arm 207 of the steering knuckle 20. Since the probe of the dial gauge is circular and has a small diameter, that is, the cross-sectional area of ​​the probe is small, it is not easy to find the highest point of the tie rod ball head 208. The height dimension detection head 22 is wide and thick, and it is relatively easy to accurately find the highest point of the tie rod ball head 208, so that the detection result is more accurate.

[0037] In one embodiment, if Figures 1 to 5As shown, the third positioning part includes two first V-shaped clips 4, the two first V-shaped clips 4 are on the same horizontal plane, and the openings are arranged oppositely. The comprehensive inspection fixture with the tie rod arm steering knuckle forging also includes a horizontal sliding mechanism, which is used to enable the third positioning part and the second detection part to slide on the support mechanism. The horizontal sliding mechanism includes a guide rail 12 and two sets of sliding components arranged oppositely, and the sliding component includes a slider 13, a bracket 14 and a second V-shaped clip 5. The two first V-shaped clips 4 correspond to the two brackets 14 one by one, and the first V-shaped clips 4 are arranged on the two brackets 14. The guide rail 12 is arranged on the support mechanism, the slider 13 is slidably arranged on the guide rail 12, the bracket 14 is arranged on the slider 13, the second V-shaped clip 5 is arranged on the bracket 14, and the first V-shaped clip 4 is arranged above the second V-shaped clip 5. The two second V-shaped clips 5 are on the same horizontal plane, and the openings of the two are arranged oppositely. The length of the guide rail 12 is less than or equal to the distance from the left end to the right end of the support mechanism. Slide blocks are respectively arranged on both ends of the guide rail 12, and the slide blocks are used to prevent the slider 13 from sliding out of the guide rail 12. The main shaft of the steering knuckle 20 is arranged between the openings of the two first V-shaped clips 4. The two first V-shaped clips 4 can slide toward or away from each other to clamp and release the main shaft of the steering knuckle 20. The inner sides of the openings of the two first V-shaped clips 4 are respectively against the outer peripheral sides of the oil seal 202 of the steering knuckle 20 to position the steering knuckle 20 in the X-axis direction and the Y-axis direction.

[0038] The second detection part includes two third dial indicators 6, whose probes are against the peripheral side of the outer bearing journal 204 of the steering knuckle 20 to detect the verticality N of the main shaft of the steering knuckle 20. The two third dial indicators 6 correspond to the two second V-shaped clamps 5 one by one, and the third dial indicators 6 are horizontally arranged and run through the second V-shaped clamps 5. Since the first V-shaped clamp 4 and the second V-shaped clamp 5 are both arranged on the bracket 14, when the bracket 14 slides, the first V-shaped clamp 4 and the second V-shaped clamp 5 slide synchronously. When the inner sides of the openings of the two first V-shaped clamps 4 are respectively against the outer peripheral side of the oil seal 202 of the steering knuckle 20, the X-axis direction and the Y-axis direction of the steering knuckle 20 are positioned, and at this time, the reading of the third dial indicator 6 on the second V-shaped clamp 5 is observed to detect the verticality N of the main shaft of the steering knuckle 20. The first V-shaped clamp 4 can slide on the support mechanism, so that it can clamp main shafts of different sizes, so that the comprehensive inspection fixture for steering knuckle forgings can be applied in a wider range and has stronger functionality. The arrangement of the two third dial indicators 6 can detect different directions of the main axis of the steering knuckle 20, so as to make the detection result more accurate.

[0039] In one embodiment, if Figures 1 to 5As shown, the comprehensive inspection fixture with the tie rod arm steering knuckle forging also includes an adjustment mechanism, which is used to drive the horizontal sliding mechanism to slide horizontally. The adjustment mechanism includes a horizontally arranged handle 15 and two horizontally arranged connecting rods 16. The handle 15 includes a rotating part and a gripping part, and a thread for convenient gripping is arranged along the circumference of the gripping part. A protrusion is arranged on the support mechanism, and a through square hole is arranged at the bottom of the protrusion. The protrusion is arranged across the guide rail 12, and the protrusion is fixed to the support mechanism by bolts.

[0040] The middle part of the rotating part is rotatably connected to the top of the protrusion, the left end of the rotating part is rotatably connected to the left end of the connecting rod 16 located on the right side, and the right end of the rotating part is rotatably connected to the right end of the connecting rod 16 located on the left side. The right end of the right connecting rod 16 is rotatably connected to the right bracket 14, and the left end of the left connecting rod 16 is rotatably connected to the left bracket 14. By horizontally rotating the gripping part of the gripping handle 15, the two brackets 14 and the slider 13 can be driven to slide horizontally on the guide rail 12, thereby realizing the clamping and separation actions of the two second V-shaped clips 5 and the two first V-shaped clips 4, which is convenient for adjustment.

[0041] In one embodiment, if Figures 1 to 5 As shown, the third detection part includes a lever 7, a gravity detection rod 9 and a guide rod 10. The cross-sectional shape of the guide rod 10 may include but is not limited to a circle, a rectangle, a triangle and a trapezoid, etc. The fulcrum of the lever 7 is set on the support mechanism. The guide rod 10 is set on the support mechanism, and a through groove is provided along the width direction of the guide rod 10. The bottom end of the gravity detection rod 9 passes through the top end of the guide rod 10 along the length direction of the guide rod 10, and the gravity detection rod 9 and the guide rod 10 are in clearance fit. The bottom end face of the gravity detection rod 9 is vertically against the top left end of the lever 7 in the through groove, and the left end of the lever 7 can swing up and down in the through groove, and the top right end of the lever 7 is against the bottom end face of the outer bearing journal 204. A limit scale 8 is provided on the top end of the gravity detection rod 9. After the bottom end surface of the outer bearing journal 204 is pressed to the top of the right end of the lever 7, the left end of the lever 7 tilts up and presses the bottom end of the gravity detection rod 9, so that the gravity detection rod 9 moves upward. There are scales on the limit scale 8, and the scales are the upper limit of the spindle size control, and the top end surface of the limit scale 8 is the lower limit of the spindle size control. When the top surface of the support mechanism is between the scale and the top end surface of the limit scale 8, it means that the spindle length L is within the normal range; if the top end surface of the limit scale 8 is lower than the top surface of the support mechanism, or the scale of the limit scale 8 is higher than the top surface of the support mechanism, the spindle length L is unqualified.

[0042] In one embodiment, if Figures 1 to 5As shown, the support mechanism includes a first reference panel 17, a second reference panel 18 and four columns 19, and the two ends of the four columns 19 are connected to the bottom of the first reference panel 17 and the top of the second reference panel 18 respectively. The first reference panel 17 is arranged above the second reference panel 18, and the columns 19 are used to connect the first reference panel 17 and the second reference panel 18. The first reference panel 17 is a rectangular plate, and a V-shaped groove is arranged along the left edge of the first reference panel 17 to its center point. The width of the V-shaped groove decreases from the edge to the center point of the first reference panel 17 in the horizontal direction, and the right side of the V-shaped groove is connected to the step hole, and the V-shaped groove runs through the vertical direction of the first reference panel 17. The setting of the V-shaped groove can prevent the first reference panel 17 from blocking the parts at its bottom, so that the measurement situation below the first reference panel 17 can be observed more clearly; in order not to affect the stability of the steering knuckle 20 placed on the first reference panel 17, the cross-sectional area of ​​the V-shaped groove is less than one-fourth of the cross-sectional area of ​​the first reference panel 17. And the steering knuckle 20 is heavy, and the steering knuckle 20 can be placed on the first reference panel 17 through the V-shaped groove, which is convenient for moving and placing the steering knuckle 20. The second reference panel 18 is also a rectangular plate, and the length, width and thickness are greater than the first reference panel 17 to improve the overall stability of the support mechanism. The first positioning portion 21 is set on the first reference panel 17 through the support rod 11, and the second positioning portion 3 is set in the middle of the top surface of the first reference panel 17. The third positioning portion can be set at the bottom of the first reference panel 17, and can also be slidably set on the second reference panel 18. The first detection portion is set on the first reference panel 17 through the support rod 11, the second detection portion is set on the second reference panel 18, and the third detection portion is set on the second reference panel 18.

[0043] In one embodiment, if Figures 1 to 5As shown, the left and right sides of the car are respectively provided with steering knuckles 20, and the two steering knuckles 20 are symmetrical to each other. In the case of only one installation position, only the tie rod arm size of one steering knuckle 20 can be detected. If another steering knuckle 20 needs to be detected, another comprehensive inspection fixture is required, which increases the use cost. Therefore, two installation positions are set on the right edge of the first reference panel 17: the first installation position 23 located at the left end and the second installation position 24 located at the right end. The first installation position 23 and the second installation position 24 are symmetrically arranged along the midline of the right side of the first reference panel 17. The support rod 11 can be set on the first installation position 23 or the second installation position 24. The support rods 11 at different installation positions are symmetrically arranged along the midline of the right side of the first reference panel 17, the second dial indicators 2 at different installation positions are symmetrically arranged along the midline of the right side of the first reference panel 17, and the first positioning parts 21 at different installation positions are symmetrically arranged along the midline of the right side of the first reference panel 17. When the support rod 11 is set on the first installation position 23, the probe of the second dial gauge 2 is set toward the left side to detect the steering knuckle 20 on the left side of the car; the positioning end of the first positioning part 21 is set toward the left side to locate the steering knuckle 20 on the left side of the car. When the support rod 11 is set on the second installation position 24, the probe of the second dial gauge 2 is set toward the right side to detect the steering knuckle 20 on the right side; the positioning end of the first positioning part 21 is set toward the right side to locate the steering knuckle 20 on the right side of the car. The setting of the first installation position 23 and the second installation position 24 reduces the use cost, avoids idleness and waste of resources, and facilitates the detection of the two steering knuckles 20.

[0044] The X-axis, Y-axis and Z-axis are coordinate axes in a spatial rectangular coordinate system, the Z-axis is a vertical direction, the Y-axis is a horizontal direction toward the left and right, and the X-axis is a horizontal direction perpendicular to the Y-axis and the Z-axis respectively.

[0045] As described above, the comprehensive inspection fixture with a tie rod arm steering knuckle forging of this embodiment has the following beneficial effects:

[0046] This solution places the steering knuckle to be tested on the support mechanism, fixes the steering knuckle 20 to be tested by the first positioning part 21, the second positioning part 3 and the third positioning part, and tests the steering knuckle 20 by the first testing part, the second testing part and the third testing part. This solution can realize the one-time testing of the key control dimensions of the steering knuckle forging with the tie rod arm, greatly improve the testing efficiency of the steering knuckle 20, and avoid errors and mistakes caused by manual testing. It also improves the accuracy of the test, while reducing the labor input and labor cost of the test.

[0047] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A comprehensive inspection tool for a steering knuckle forging with a tie rod arm, used to inspect the size of a steering knuckle forging with a tie rod arm, wherein a tie rod ball head is provided at the front end of the tie rod arm, and characterized in that: The comprehensive inspection fixture for the forging of the steering knuckle with tie rod arm includes: A support mechanism, used for supporting the steering knuckle to be tested, wherein the support mechanism is provided with a support rod; A positioning mechanism, comprising a first positioning portion for abutting against an inner reference surface of a steering knuckle tie rod arm to position the steering knuckle in the Y-axis direction, a second positioning portion for abutting against an end surface of a steering knuckle brake positioning stop to position the steering knuckle in the Z-axis direction, and a third positioning portion for abutting against a peripheral side of a steering knuckle main shaft to position the steering knuckle in the X-axis direction and the Y-axis direction, wherein the first positioning portion is arranged on the support rod, and the second positioning portion and the third positioning portion are respectively arranged on the support mechanism; A detection mechanism, comprising a first detection part for detecting the horizontal displacement size and the vertical displacement size of the steering knuckle tie rod arm, a second detection part for detecting the verticality of the steering knuckle main shaft, and a third detection part for detecting the length of the steering knuckle main shaft, wherein the first detection part is arranged on the support rod, and the second detection part and the third detection part are respectively arranged on the support mechanism; The second positioning portion includes a stepped hole provided on the support mechanism, the steering knuckle brake positioning stop is provided in the stepped hole, and the end surface of the steering knuckle brake positioning stop abuts against the inner hole end surface of the stepped hole to position the steering knuckle in the Z-axis direction; The support mechanism includes a first reference panel, a second reference panel and four columns, the columns are arranged between the first reference panel and the second reference panel, the step hole is arranged on the first reference panel, the second detection part, the third positioning part and the third detection part are arranged on the second reference panel, and the support rod is arranged on the first reference panel; The first detection part comprises a first dial gauge and a second dial gauge, wherein the probe of the first dial gauge is against the highest point of the steering knuckle tie rod ball head along the Z-axis direction to detect the vertical displacement dimension of the steering knuckle tie rod arm, and the probe of the second dial gauge is against the side surface of the steering knuckle tie rod ball head along the Y-axis direction to detect the horizontal displacement dimension of the steering knuckle tie rod arm; The third positioning part includes two first V-shaped clips with openings arranged opposite to each other, and the comprehensive inspection fixture with a tie rod arm steering knuckle forging also includes a horizontal sliding mechanism, and the two first V-shaped clips are slidably arranged on the support mechanism through the horizontal sliding mechanism, and the steering knuckle spindle is arranged between the two first V-shaped clips, and the inner sides of the openings of the two first V-shaped clips are respectively against the peripheral sides of the steering knuckle spindle to position the steering knuckle in the X-axis direction and the Y-axis direction; The horizontal sliding mechanism comprises a guide rail and two sets of sliding components arranged on the supporting mechanism, the sliding component comprises a slider slidably arranged on the guide rail, a bracket arranged on the slider, and a second V-shaped clip arranged on the bracket, the openings of the two second V-shaped clips are arranged opposite to each other, the two first V-shaped clips are arranged on the two brackets in a one-to-one correspondence, the second detection part comprises two third dial indicators, the two third dial indicators are horizontally arranged on the two second V-shaped clips in a one-to-one correspondence, and the probes of the two third dial indicators are respectively against the peripheral sides of the steering knuckle spindle to detect the verticality of the steering knuckle spindle; The third detection part includes a lever, a gravity detection rod and a guide rod, the fulcrum of the lever is arranged on the support mechanism, the first end of the lever is abutted against the end of the steering knuckle main shaft, the first end of the gravity detection rod passes through the support mechanism along the Z-axis direction, and a limit scale is arranged on the first end of the gravity detection rod, a through groove is opened along the width direction of the guide rod, the second end of the gravity detection rod is penetrated into the guide rod, and is vertically abutted against the second end of the lever in the through groove.

2. The comprehensive inspection fixture for the steering knuckle forging with tie rod arm according to claim 1, characterized in that: A V-shaped groove whose width gradually narrows in the horizontal direction is arranged along the edge of the first reference panel to the center point thereof, the V-shaped groove runs through the vertical direction of the first reference panel, and the V-shaped groove is communicated with the step hole.

3. The comprehensive inspection fixture for the steering knuckle forging with tie rod arm according to claim 1, characterized in that: The support mechanism is provided with a first mounting position and a second mounting position, the support rod is arranged at any one of the first mounting position and the second mounting position, the support rods at different mounting positions are symmetrically arranged along the perpendicular bisector of the line connecting the first mounting position and the second mounting position, the second dial indicators at different mounting positions are symmetrically arranged along the perpendicular bisector of the line connecting the first mounting position and the second mounting position, and the first positioning parts at different mounting positions are symmetrically arranged along the perpendicular bisector of the line connecting the first mounting position and the second mounting position.

4. The comprehensive inspection fixture for the forging of the steering knuckle with tie rod arm according to claim 1, characterized in that: The comprehensive inspection fixture with the tie rod arm steering knuckle forging also includes an adjustment mechanism for driving the horizontal sliding mechanism to slide horizontally, and the adjustment mechanism includes a handle and two connecting rods. The handle is rotatably connected to the supporting mechanism, and the first ends of the two connecting rods are respectively rotatably connected to the two brackets, and the second ends of the two connecting rods are respectively rotatably connected to different ends of the handle.

Images