CN109211060B - Detection method for position of ball head of control arm and detection tool thereof - Google Patents
Detection method for position of ball head of control arm and detection tool thereof Download PDFInfo
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- CN109211060B CN109211060B CN201710542063.3A CN201710542063A CN109211060B CN 109211060 B CN109211060 B CN 109211060B CN 201710542063 A CN201710542063 A CN 201710542063A CN 109211060 B CN109211060 B CN 109211060B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/004—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points
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Abstract
The invention provides a detection method of a control arm ball head position and a detection tool comprising the same, wherein the detection method of the control arm ball head position comprises the following steps: the sphere center space position of the control arm ball head is decomposed into a vertical direction position and a horizontal direction position, and the sphere center space position of the control arm ball head is determined by respectively measuring the vertical direction position and the horizontal direction position. Detection utensil is examined to control arm bulb position includes: the device comprises a bottom plate, a positioning device, a clamping device and a measuring device, wherein the positioning device and the measuring device are respectively fixed on the bottom plate; the measuring device is used for measuring the sphere center position of the ball head of the control arm. The invention can directly measure and obtain the actual position of the ball center through the clearance gauge and the dial indicator, can accurately and quantitatively detect the position of the ball center of the ball head, improves the reliability of the product and provides convenient conditions for subsequent quality improvement.
Description
Technical Field
The invention relates to the field of position detection methods, in particular to a detection method and a detection tool for a ball head position of a control arm.
Background
In automotive chassis suspension construction, the control arm is an important component. Fig. 1 is a schematic structural diagram of a control arm assembly in the prior art. As shown in fig. 1, the control arm 10 includes a ball head assembly 11, a front bushing assembly 12 connected to the vehicle body, a rear bushing assembly 13, and a control arm body 14.
Fig. 2 is a schematic structural diagram of a ball head assembly in the prior art. As shown in fig. 2, the conventional ball head assembly 11 includes a ball stud 111, a dust cover 112 and a ball seat 113, and reference numeral 114 in fig. 2 is a ball center position.
In the actual use process, the ball assembly 11 of the control arm 10 is connected with a steering knuckle, and the force applied to the wheels is transmitted to the control arm body 14 through the ball assembly 11 and then transmitted to the vehicle body. The accuracy of the ball center position 14 directly determines whether the force transmission path is reasonable.
With the development of automobile lightweight technology, the application of the single-chip control arm formed by stamping high-strength steel is more and more extensive. Compared with a traditional two-piece type welded or cast aluminum control arm body, the single-piece type control arm is influenced by the structure, and the position of the ball head center is more sensitive.
In the product development process, the position deviation of the ball head center of the single-piece control arm is found to be 1mm, so that an unreasonable failure mode of the control arm assembly in the use process can be caused. Therefore, the position of the ball center relative to the punching sheet needs to be reasonably arranged in the product design stage. More importantly, a reasonable and effective method is adopted for detection in later-stage detection, so that the ball center position of the ball head is ensured to be consistent with the designed position.
As can be seen from fig. 2, due to the structural limitation, the ball stud 111 of the ball head assembly 11 is wrapped by the dust cover 112 and the ball seat 113, and cannot be directly detected by the measuring tool in practice.
At present, the detection of the position of the sphere center of the control arm is generally carried out by adopting a three-coordinate device. Fig. 3 is a schematic diagram of a three-coordinate measuring ball center of a ball head in the prior art. As shown in fig. 3, in the measurement process, the control arm assembly is placed on a fixture, the ball stud is pulled to two positions (such as a ball stud position a and a ball stud position B in fig. 3) with a relatively large angle distance, generally 30 to 45 degrees, the outer contour of the ball stud is scanned by three-coordinate equipment respectively, the axis position is measured and calculated, the intersection point of the axes of the two positions is the position of the center of sphere, and the position actually measured by the center of sphere is compared with the theoretical design position, so that the actual deviation value of the center of sphere can be obtained.
From the above analysis, it can be seen that the current measurement methods have the following disadvantages:
firstly, the position of the ball center cannot be directly measured by the conventional method, and the method is an indirect measurement method which indirectly estimates the center line of the ball pin by scanning the outer contour of the ball pin and indirectly estimates the position of the ball center by intersecting the center lines of two different positions.
Secondly, the existing measuring method has the defects of large deviation, inaccurate precision and large deviation from the actual position of the ball center of the ball head in multiple conversions, the position of the ball center is a parameter needing to be accurately controlled, and the existing method is difficult to meet the requirements.
And thirdly, the three-coordinate detection operation is complex, the requirement on users is high, and the convenience is poor. The three-coordinate detection efficiency is low, online detection cannot be realized, and full detection of products cannot be realized.
As mentioned above, although the center of sphere position is very important, the control arm assembly is a key characteristic parameter of the product, and has a significant impact on the performance of the whole assembly. However, the detection method adopted at present has obvious defects, the detection result cannot be accurately controlled, and a more convenient, efficient and accurate measurement method is urgently needed to be found for detecting the ball head center position.
Disclosure of Invention
The invention aims to overcome the defects that the detection mode of the position of the ball head of the control arm in the prior art is not accurate enough and the operation is complex, and provides a detection method and a detection tool for the position of the ball head of the control arm.
The invention solves the technical problems through the following technical scheme:
a detection method for the position of a ball head of a control arm is characterized by comprising the following steps:
the sphere center space position of the control arm ball head is decomposed into a vertical direction position and a horizontal direction position, and the sphere center space position of the control arm ball head is determined by respectively measuring the vertical direction position and the horizontal direction position.
According to an embodiment of the invention, the method for detecting the position of the ball head of the control arm specifically comprises the following steps:
placing a control arm assembly on a detection tool, and after the control arm assembly is positioned, placing a ball head assembly to be detected on a special device which can freely move in the horizontal and vertical directions;
measuring the deviation △ z between the actual position and the theoretical position of the press-fitting surface of the ball seat in the vertical direction by using the positioned simulation block;
and step three, measuring the deviation of the actual position and the theoretical position of the ball head assembly in the horizontal direction by using a dial indicator.
According to one embodiment of the invention, the special means ensure that the pin axis of the control arm ball is vertical.
According to one embodiment of the invention, the vertical position of the control arm ball head can be obtained by measuring the value of the press-fitting surface of the ball head seat, and the horizontal position of the ball center of the control arm ball head is consistent with the horizontal position of the lower end detection point of the ball pin.
According to an embodiment of the present invention, the horizontal positions in the third step include an X direction and a Y direction, and deviations △ X and △ Y of the actual position of the ball stud from the theoretical position are detected twice through a dial indicator, so as to determine the deviation (△ X △ Y △ z) of the actual position of the ball stud from the theoretical position in the ball center space of the ball assembly.
The invention also discloses a detection tool for the position of the ball head of the control arm, which is characterized by comprising the following components: a base plate, a positioning device, a clamping device and a measuring device, wherein,
the positioning device and the measuring device are respectively fixed on the bottom plate, the clamping device is fixed on the positioning device, and the control arm assembly is fixedly positioned through the positioning device and the clamping device;
the measuring device is used for measuring the sphere center position of the control arm ball head.
According to one embodiment of the invention, the measuring device comprises a vertical measuring unit and a horizontal measuring unit.
According to one embodiment of the invention, the vertical measuring unit comprises a simulation block which is an inverted L model, and the working surface of the simulation block is obtained by an offset method from the press-fitting surface of the ball seat to be detected.
According to one embodiment of the invention, the level measuring unit comprises:
the sliding table base is arranged on the bottom plate;
the longitudinal sliding table is matched with the sliding table base through a first sliding rail, so that the longitudinal sliding table can slide on the sliding table base along the longitudinal direction;
the transverse sliding table is matched with the longitudinal sliding table through a second sliding rail, so that the transverse sliding table moves on the longitudinal sliding table along the transverse direction;
the guide bush is arranged on the inner side of the transverse sliding table, and a limiting spring is arranged below the guide bush;
and the dial indicator is arranged on the side part of the longitudinal sliding table.
According to one embodiment of the invention, a round hole is formed in the middle of the transverse sliding table, the inner wall of the round hole is step-shaped, the guide bushing is installed in the round hole, and the limiting spring is installed between the guide bushing and the inner wall of the round hole.
The positive progress effects of the invention are as follows:
the detection method and the detection tool for the position of the ball head of the control arm have the following advantages:
the actual position of the sphere center can be obtained through direct measurement of the gap ruler and the dial indicator, the position of the sphere center of the ball head can be accurately and quantitatively detected, the reliability of a product is improved, and a convenient condition is provided for subsequent quality improvement.
The detection method is simple, easy to operate and high in detection efficiency, can be implemented on line, and can increase the detection frequency as required.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings in which like reference numerals denote like features throughout the several views, wherein:
fig. 1 is a schematic structural diagram of a control arm assembly in the prior art.
Fig. 2 is a schematic structural diagram of a ball head assembly in the prior art.
Fig. 3 is a schematic diagram of a three-coordinate measuring ball center of a ball head in the prior art.
Fig. 4 is a schematic diagram of the sphere center reference of the ball head assembly in the detection method of the ball head position of the control arm according to the present invention.
Fig. 5 is a schematic structural diagram of the detection tool for detecting the position of the ball head of the control arm.
Fig. 6 is a schematic structural diagram of a vertical detection unit in the detection tool for detecting the position of the ball head of the control arm according to the invention.
Fig. 7 is a schematic structural diagram of a horizontal measuring unit in the detection tool for detecting the position of the ball head of the control arm according to the invention.
FIG. 8 is a using state diagram of the detection tool for the position of the control arm ball head.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Further, although the terms used in the present invention are selected from publicly known and used terms, some of the terms mentioned in the description of the present invention may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Furthermore, it is required that the present invention is understood, not simply by the actual terms used but by the meaning of each term lying within.
The invention discloses a method for detecting the position of a ball head of a control arm, which comprises the following steps: the sphere center space position of the control arm ball head is decomposed into a vertical direction position and a horizontal direction position, and the sphere center space position of the control arm ball head is determined by respectively measuring the vertical direction position and the horizontal direction position.
The detection method of the position of the ball head of the control arm specifically comprises the following steps:
placing a control arm assembly on a detection tool, and after the control arm assembly is positioned, placing a ball head assembly to be detected on a special device which can freely move in the horizontal and vertical directions;
measuring the deviation △ z between the actual position and the theoretical position of the press-fitting surface of the ball seat in the vertical direction by using the positioned simulation block;
and step three, measuring the deviation of the actual position and the theoretical position of the ball head assembly in the horizontal direction by using a dial indicator.
The special device ensures that the pin axis of the control arm ball head is vertical. The vertical position of the control arm ball head can be obtained by measuring the numerical value of the press-fitting surface of the ball head seat, and the horizontal position of the ball center of the control arm ball head is consistent with the horizontal position of a detection point at the lower end of the ball head pin.
According to an embodiment of the present invention, the horizontal positions in the third step include an X direction and a Y direction, and deviations △ X and △ Y of the actual position of the ball stud from the theoretical position are detected twice through a dial indicator, so as to determine the deviation (△ X △ Y △ z) of the actual position of the ball stud from the theoretical position in the ball center space of the ball assembly.
Fig. 4 is a schematic diagram of the sphere center reference of the ball head assembly in the detection method of the ball head position of the control arm according to the present invention.
As shown in fig. 4, the center of the ball is positioned with reference to the ball seat press-fitting surface 20. Based on the principle, in a given control arm assembly, if the position of the ball head base press-fitting surface in the vertical direction relative to the reference of the control arm assembly and the position of the ball head pin in the horizontal plane can be detected, the spatial position of the ball center can be obtained.
According to the above description, the method for detecting the position of the ball head of the control arm according to the present invention includes decomposing the spatial position of the center of the ball into the vertical position and the horizontal position, and determining the spatial position of the center of the ball by measuring the vertical position and the horizontal position, respectively.
Specifically, the control arm assembly is placed on the detection tool, and after the control arm assembly is positioned, the ball head assembly to be detected is placed on a special device capable of freely moving in the horizontal and vertical directions. The special device can ensure that the axis of the ball pin is vertical and the ball is positioned after the ball is positioned. Thus, the vertical position of the ball center can be obtained by measuring the value of the press-fitting surface of the ball head seat (because the two have a fixed position relationship), and the horizontal position of the ball center is consistent with the horizontal position of the lower end detection point of the ball pin.
And then, measuring △ z deviation between the actual position and the theoretical position of the press-fitting surface of the ball head seat in the vertical direction by using the positioned simulation block, and measuring △ z deviation between the actual position and the theoretical position of the ball head assembly in the horizontal direction by using a dial indicator, wherein the horizontal direction position comprises the X direction and the Y direction, and the deviation △ X and △ Y between the actual position and the theoretical position of the ball head pin is detected by using the dial indicator twice, so that the deviation (△ X △ Y △ z) between the actual position and the theoretical position of the ball head space of the ball head assembly can be directly determined.
Therefore, the technical idea of the detection method for the ball head position of the control arm is roughly as follows:
for the control arm assembly, the ball head center is positioned on the ball head pin axis.
Secondly, the ball stud is installed by taking the ball seat press-fitting surface as a reference in the installation process, a fixed position relation exists between the ball center of the ball and the ball seat press-fitting surface, and the position of the ball center can be obtained by directly detecting the position of the ball seat press-fitting surface, as shown in fig. 4, the position degree of the ball center takes A, B characteristics as a reference, wherein the characteristic A is the ball seat press-fitting surface 20.
And thirdly, in a given control arm assembly, the spatial position of the sphere center can be decomposed into three spatial coordinates of X \ Y \ Z, and the sphere center position can be obtained only by measuring the value of X \ Y \ Z in the assembly checking fixture.
Fig. 5 is a schematic structural diagram of the detection tool for detecting the position of the ball head of the control arm. Fig. 6 is a schematic structural diagram of a vertical detection unit in the detection tool for detecting the position of the ball head of the control arm according to the invention. Fig. 7 is a schematic structural diagram of a horizontal measuring unit in the detection tool for detecting the position of the ball head of the control arm according to the invention.
As shown in fig. 5 to 7, the present invention further discloses a detection tool 30 for detecting the position of the ball head of the control arm, which includes: a base plate 31, a positioning device 32, a clamping device 33 and a measuring device. The positioning device 32 and the measuring device are respectively fixed on the bottom plate 31, the clamping device 33 is fixed on the positioning device 32, and the control arm assembly is fixed and positioned through the positioning device 32 and the clamping device 33, so that the positioning effect is achieved. The measuring device is used for measuring the sphere center position of the control arm ball head. The measuring device comprises a vertical measuring unit and a horizontal measuring unit.
The vertical measuring unit comprises a simulation block 34, the simulation block 34 is preferably of an inverted L type, and the working surface of the simulation block 34 is obtained by a ball head seat press-mounting surface 20 to be detected through an offset method, the vertical measuring unit is realized by using the simulation block 34 (as shown in fig. 6), the molded surface of the working surface 341 of the simulation block is obtained by the ball head press-mounting surface to be detected through the offset method, the theoretical gap between the working surface of the simulation block and the ball head press-mounting surface is an offset distance during detection, and the gap value between the simulation block and the ball head press-mounting surface is read through a gap ruler during detection operation.
Preferably, the level measuring unit includes: the sliding table comprises a sliding table base 35, a longitudinal sliding table 36, a transverse sliding table 37, a guide bush 38 and a dial indicator 39. Wherein the slide table base 35 is mounted on the base plate 31. The longitudinal sliding table 36 is matched with the sliding table base 35 through a first sliding rail, so that the longitudinal sliding table 36 slides on the sliding table base 35 along the longitudinal direction. The transverse sliding table 37 is matched with the longitudinal sliding table 36 through a second sliding rail, so that the transverse sliding table 37 moves on the longitudinal sliding table 36 along the transverse direction. The guide bush 38 is installed inside the lateral sliding table 37, and a limit spring 40 is installed below the guide bush 38. The dial indicator 39 is mounted on the side of the longitudinal slide 36.
Further preferably, a round hole is formed in the middle of the transverse sliding table 37, the inner wall of the round hole is step-shaped, the guide bushing 38 is installed in the round hole, and the limiting spring 40 is installed between the guide bushing 38 and the inner wall of the round hole.
In the embodiment, through the combined action of the transverse sliding table 37 and the longitudinal sliding table 36, the position of the sliding table can be freely adjusted according to the actual position of the ball stud, a limiting spring 40 is arranged below the guide bush 38, after the ball stud is placed into the guide bush 40, the inner wall of the guide bush 38 is tightly attached to the ball stud under the action of the compression force of the spring, so that the ball stud is kept perpendicular to the bottom plate, a detection point (a position detected by a dial indicator) of the ball stud is ensured to be consistent with the horizontal position of the ball center, the detected horizontal position of the position is the horizontal position of the ball center, two detection positions of the dial indicator 39 are used for measuring deviation values of the ball stud in the measuring point position in the X direction and the Y direction in the horizontal plane, and the deviation values △ X and △ Y are deviations in the X direction and the Y direction, namely deviation values of the actual position of the ball center and the theoretical position in the X direction.
Thus, the deviation value (△ x △ y △ z) between the actual position and the theoretical position of the sphere center is obtained, and the deviation value is compared with the position tolerance during design, so that whether the position of the sphere center of the assembly meets the design requirement can be known.
FIG. 8 is a using state diagram of the detection tool for the position of the control arm ball head.
As shown in fig. 8, according to the above description of the structure of the detection tool for detecting the position of the ball head of the control arm of the present invention, the detection method of the present invention includes decomposing the spatial position of the ball center into a vertical position and a horizontal position, and determining the spatial position of the ball center by measuring the vertical position and the horizontal position, respectively.
Further, the use process of the detection tool for detecting the position of the ball head of the control arm is as follows:
first, the position of the analog block 34 and the dial indicator 39 are initially calibrated with a standard.
Next, the control arm assembly 50 is placed on the detection device by the positioning device 32 according to the positioning reference requirement.
Next, the ball stud 60 to be tested is placed in the guide bushing 38. At this time, the horizontal positions of the transverse sliding table 37 and the longitudinal sliding table 36 need to be adjusted according to the actual position of the ball stud 60, so that the ball stud 60 can be easily and naturally inserted into the bushing.
At this time, the limiting spring 40 tightly fits the guide bush 38 and the ball stud 60 under the compression action of the ball stud 60, so that the guide bush 38 and the ball stud 60 are coaxial, and the guide bush 38 is perpendicular to the bottom plate 31, so that the axis of the ball stud 60 is kept perpendicular to the bottom plate 31, so that a detection point (the position detected by the dial indicator 39) of the ball stud 60 is consistent with the horizontal position of the center of the ball, and the detected horizontal position is the horizontal position of the center of the ball.
The control arm assembly 50 is then secured to the detection device by the clamp 33. To this end, the control arm assembly is fully seated.
Then, the deviations △ X and △ Y of the horizontal (X direction and Y direction) actual position from the theoretical position of the actual part center of sphere can be detected by measuring twice in the X direction and Y direction, respectively, using the dial gauge 39 at the detection points.
Finally, the dummy block 34 is placed on the upper end of the ball seat 20, and the gap between the dummy block and the press-fitting surface of the ball seat is measured by a gap gauge, thereby obtaining a deviation △ z of the actual position of the center of the ball from the theoretical position in the vertical direction.
The horizontal and vertical positions of the center of the sphere have been measured so far, and the spatial position of the center of the sphere is determined.
After the detection tool for the ball head position of the control arm is used for measuring, the deviation value obtained by measurement is compared with the position tolerance during design, so that whether the ball center position of the assembly meets the design requirement can be known, and whether the part is qualified is judged.
In summary, the detection method and the detection tool for the ball head position of the control arm have the following advantages:
the actual position of the sphere center can be obtained through direct measurement of the gap ruler and the dial indicator, the position of the sphere center of the ball head can be accurately and quantitatively detected, the reliability of a product is improved, and a convenient condition is provided for subsequent quality improvement.
The detection method is simple, easy to operate and high in detection efficiency, can be implemented on line, and can increase the detection frequency as required.
The traditional detection method for the ball head position of the control arm scans the outer contours of ball head pins at different positions through three-coordinate measuring equipment, and deduces the position of a ball center through measuring and calculating the intersection point of axes, because the equipment is complex to operate and low in detection efficiency, the detection method is difficult to implement in batch production detection.
Therefore, the detection method and the detection tool for the ball head position of the control arm adopt a new detection method and a new detection device, and provide a simple and easy measurement method and a rapid detection device, so that the ball head center position can be detected in a more convenient, efficient and accurate measurement mode.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (8)
1. The utility model provides a utensil is examined in detection of control arm bulb position which characterized in that, utensil is examined in detection of control arm bulb position includes: a base plate, a positioning device, a clamping device and a measuring device, wherein,
the positioning device and the measuring device are respectively fixed on the bottom plate, the clamping device is fixed on the positioning device, and the control arm assembly is fixedly positioned through the positioning device and the clamping device;
the measuring device is used for measuring the sphere center position of the control arm ball head;
the measuring device comprises a vertical measuring unit and a horizontal measuring unit;
the level measurement unit includes: the sliding table base is arranged on the bottom plate;
the longitudinal sliding table is matched with the sliding table base through a first sliding rail, so that the longitudinal sliding table can slide on the sliding table base along the longitudinal direction;
the transverse sliding table is matched with the longitudinal sliding table through a second sliding rail, so that the transverse sliding table moves on the longitudinal sliding table along the transverse direction;
the guide bush is arranged on the inner side of the transverse sliding table, and a limiting spring is arranged below the guide bush;
and the dial indicator is arranged on the side part of the longitudinal sliding table.
2. The detection tool for detecting the position of the ball head of the control arm as claimed in claim 1, wherein the vertical measuring unit comprises a simulation block, the simulation block is in an inverted L shape, and the working surface of the simulation block is obtained by offsetting a press-fitting surface of the ball head seat to be detected.
3. The detection tool for detecting the position of the ball head of the control arm according to claim 1, wherein a circular hole is formed in the middle of the transverse sliding table, the inner wall of the circular hole is step-shaped, the guide bushing is installed in the circular hole, and the limiting spring is installed between the guide bushing and the inner wall of the circular hole.
4. A detection method for a position of a ball head of a control arm is characterized in that the detection tool for the position of the ball head of the control arm according to any one of claims 1 to 3 is adopted, and the detection method for the position of the ball head of the control arm comprises the following steps:
the sphere center space position of the control arm ball head is decomposed into a vertical direction position and a horizontal direction position, and the sphere center space position of the control arm ball head is determined by respectively measuring the vertical direction position and the horizontal direction position.
5. The method for detecting the position of the ball head of the control arm according to claim 4, wherein the method for detecting the position of the ball head of the control arm specifically comprises the following steps:
placing a control arm assembly on a detection tool, and after the control arm assembly is positioned, placing a ball head assembly to be detected on a special device which can freely move in the horizontal and vertical directions;
measuring the deviation △ z between the actual position and the theoretical position of the press-fitting surface of the ball seat in the vertical direction by using the positioned simulation block;
and step three, measuring the deviation of the actual position and the theoretical position of the ball head assembly in the horizontal direction by using a dial indicator.
6. The method for detecting the position of the control arm ball head as claimed in claim 5, wherein the special device ensures that the pin axis of the control arm ball head is vertical.
7. The method for detecting the position of the ball head of the control arm as claimed in claim 6, wherein the vertical position of the ball head of the control arm can be obtained by measuring the value of the press-fitting surface of the ball head seat, and the horizontal position of the center of the ball head of the control arm is consistent with the horizontal position of the detection point at the lower end of the ball pin.
8. The method for detecting the position of the ball head of the control arm as claimed in claim 5, wherein the horizontal position in the third step includes an X direction and a Y direction, and deviations △ X and △ Y of the actual position of the ball head pin from the theoretical position are detected by a dial indicator twice, so as to determine the deviation (△ X △ Y △ z) of the actual position of the ball center space of the ball head of the control arm from the theoretical position.
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| CN201710542063.3A CN109211060B (en) | 2017-07-05 | 2017-07-05 | Detection method for position of ball head of control arm and detection tool thereof |
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| CN201710542063.3A CN109211060B (en) | 2017-07-05 | 2017-07-05 | Detection method for position of ball head of control arm and detection tool thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS55164305A (en) * | 1979-06-11 | 1980-12-22 | Tokyo Sokuhan Kk | Origin setting method and origin setting block of coordinate measuring machine |
| CN202182684U (en) * | 2011-07-21 | 2012-04-04 | 安徽博一流体传动股份有限公司 | Plunger centre of bulb height testing tool |
| DE102011108881A1 (en) * | 2011-07-28 | 2013-01-31 | Trw Automotive Gmbh | Joint housing of a ball joint and method for mounting the joint housing to a support element |
| CN105091827B (en) * | 2015-04-29 | 2018-01-12 | 张家港海太精密量仪科技有限公司 | Diameter measuring instrument for sphere |
| CN205719509U (en) * | 2016-04-22 | 2016-11-23 | 芜湖禾田汽车工业有限公司 | Detecting tool for automobile control arm ball pin fatigue test |
| CN106323169A (en) * | 2016-09-18 | 2017-01-11 | 南通市测绘院有限公司 | Sphere center coordinate positioning method |
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