Measuring mechanism for detecting curved surface position of control arm
The measurement mechanism, which combines a support base plate and sensors, solves the problems of accuracy and efficiency in measuring the curved surface position of the control arm, and achieves fast and accurate curved surface position detection.
Patent Information
- Application Number
- CN202520437073.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-03-13
AI Technical Summary
In existing technologies, the measurement accuracy of the curved surface position of the control arm is not accurate enough and the efficiency is low. Manual measurement methods are prone to errors.
It adopts a combined structure of a support base plate, a Z-axis support slide, a cross slide, and a measuring component. It achieves precise positioning by contacting the workpiece surface with a detection pin and using multiple sensors to detect the X, Y, and Z-axis movement of the workpiece.
It enables rapid and accurate measurement of the control arm surface position, avoids interference from human factors, and improves measurement accuracy and efficiency.
Smart Images
Figure CN223815090U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of control arm measurement technology, and in particular to a measuring mechanism for detecting the position of the curved surface of a control arm. Background Technology
[0002] Control arms are a crucial component of a vehicle's suspension system, significantly impacting its suspension characteristics, stability, and handling performance. They ensure good wheel-road contact and influence vehicle behavior under various driving conditions. Control arms connect the vehicle body to the wheel suspension. Located above the wheels, they support and control wheel movement by connecting to the wheel assembly and the vehicle's chassis. One of the main functions of control arms is ensuring wheel contact with the road surface during driving, while also bearing a portion of the suspension system's load. Therefore, control arms play a vital role in automobiles. For the ball joint assembly to rotate in multiple directions, the positional accuracy of the curved surface (hereinafter referred to as the workpiece) needs to be controlled during machining. The surface position directly affects the performance and lifespan of the ball joint assembly; therefore, precise positioning of the curved surface is essential to meet these technical requirements. However, conventional manual measurement methods are prone to significant errors in accuracy due to techniques and other factors. Furthermore, manual measurement is inefficient. Utility Model Content
[0003] The main technical problem solved by this utility model is to provide a measuring mechanism for detecting the position of the curved surface of a control arm, which can quickly and accurately measure the position of the curved surface of the workpiece and avoid the influence of human factors on the accuracy of the results.
[0004] To solve the above-mentioned technical problems, the present invention provides a measuring mechanism for detecting the curved surface position of a control arm, comprising: a supporting base plate, a base on the supporting base plate, a Z-axis supporting slide on the base plate, a cross slide connected to the Z-axis supporting slide, a measuring component for cooperating with the curved surface position of the workpiece on the slider of the cross slide, the cross slide supporting the movement of the measuring component in the X and Y directions, the measuring component including a guide sleeve, a positioning sleeve, and a detection pin, the end of the guide sleeve away from the cross slide supporting the position of the workpiece, the positioning sleeve being disposed in the guide sleeve and slidingly cooperating with the guide sleeve, the positioning sleeve being rotatable in the guide sleeve, the detection pin being disposed in the positioning sleeve and slidingly cooperating with the positioning sleeve, one end of the detection pin being provided with a fitting part cooperating with the standard curved surface of the workpiece, and a driving device connected to the cross slide for driving the Z-axis movement of the cross slide.
[0005] Preferably, a first support spring is fitted on the positioning sleeve. One end of the first support spring abuts against the positioning sleeve, and the other end of the first support spring abuts against the guide sleeve. When there is no external force, the first support spring is used to support the relative position between the guide sleeve and the positioning sleeve.
[0006] Preferably, a second support spring is sleeved on the detection pin, with one end of the second support spring abutting against the detection pin and the other end of the second support spring abutting against the positioning sleeve.
[0007] Preferably, a bracket is provided on the support base plate, and a rotating sleeve is axially slidably connected to one end of the positioning sleeve near the cross slide table. The bracket supports the rotation of the rotating sleeve. A sixth sensor is provided on the rotating sleeve. An extension block extends outward from the positioning sleeve. The detection end of the sixth sensor is connected to the extension block. The sixth sensor is used to detect the absolute position of the positioning sleeve in the Z direction.
[0008] Preferably, a fifth sensor is installed at one end of the positioning sleeve near the cross slide. The detection end of the fifth sensor is connected to the detection pin, and the fifth sensor is used to measure the relative position between the detection pin and the positioning sleeve.
[0009] Preferably, a fourth sensor and a third sensor are installed on the cross slide, and the detection ends of the fourth sensor and the third sensor are both connected to the rotating sleeve to detect the rotation angle of the rotating sleeve in the X and Z planes.
[0010] Preferably, a seventh sensor is provided on the base, and the detection end of the seventh sensor is connected to the Z-direction support slide to detect the Z-direction position of the Z-direction support slide, thereby compensating for the Z-direction measured data of the surface under test.
[0011] Preferably, a first sensor and a second sensor are provided on the cross slide. The first sensor is used to detect the X-direction displacement of the slider on the cross slide, and the second sensor is used to detect the Y-direction displacement of the slider on the cross slide.
[0012] Preferably, the bottom of the cross slide is connected to the drive device via a connecting rod, and a compression spring abuts against the connecting rod and the cross slide.
[0013] Preferably, a tension spring is provided on the base, one end of the tension spring is connected to the base, and the other end of the tension spring is connected to the slider on the Z-axis support slide. The tension spring provides Z-axis support force to the slider on the Z-axis support slide.
[0014] The beneficial effects of this utility model are: by contacting the curved surface of the workpiece with the detection pin, the position of the detection pin is passively moved during the contact process, thereby forcing the slide on the cross slide supporting the position of the detection pin to move in the X and / or Y directions, and calculating the Z-direction movement of the detection pin and the positioning sleeve, as well as the Z-direction compensation amount, to know the position of the curved surface of the workpiece, thereby accurately knowing the accuracy of the curved surface position, and thus knowing whether the workpiece meets the requirements. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall detection state of this utility model;
[0016] Figure 2 This is a schematic diagram of the material feeding state structure of this utility model;
[0017] Figure 3 This is a utility model Figure 1 Sectional view of section K1-K1;
[0018] Figure 4 This is a utility model Figure 1 Sectional view of K2-K2.
[0019] The components in the attached diagram are labeled as follows:
[0020] 1. Support base plate; 11. Bracket;
[0021] 2. Base; 21. Tension spring;
[0022] 3. Z-axis support slide;
[0023] 4. Cross slide;
[0024] 51. Guide sleeve; 52. Positioning sleeve; 521. Extension block; 53. Detection pin; 531. Fitting part; 54. First support spring; 55. Second support spring; 56. Rotating sleeve;
[0025] 6. Drive unit;
[0026] 71. Connecting rod; 72. Compression spring;
[0027] 8. Workpiece;
[0028] 91. First sensor; 92. Second sensor; 93. Third sensor; 94. Fourth sensor;
[0029] 95. Fifth sensor; 96. Sixth sensor; 7. Seventh sensor. Detailed Implementation
[0030] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0034] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0035] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0036] Unless otherwise specified, physical quantities in formulas should be understood as basic quantities of SI base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.
[0037] Example:
[0038] refer to Figures 1-4A measuring mechanism for detecting the curved surface position of a control arm includes: a support base plate 1, a base 2 bolted to the support base plate 1, a Z-axis support slide 3 bolted to the base 2, a cross slide 4 connected to the slider of the Z-axis support slide 3, thereby the Z-axis support slide 3 provides guiding support for the Z-axis displacement of the cross slide 4, and a measuring component bolted to the slider of the cross slide 4 for cooperating with the curved surface position of the workpiece 8, the measuring component being movable in the X and Y directions on the cross slide 4. The measuring assembly includes a guide sleeve 51, a positioning sleeve 52, and a detection pin 53. The end of the guide sleeve 51 furthest from the cross slide 4 supports the position of the workpiece 8; that is, the upper end of the guide sleeve 51 supports the lower side of the workpiece 8 being measured. The positioning sleeve 52 is installed in the guide sleeve 51 and slides within it, and the positioning sleeve 52 can rotate within the guide sleeve 51. The detection pin 53 is located in the positioning sleeve 52 and slides within it. One end of the detection pin 53 has a fitting portion 531 that mates with the standard curved surface of the workpiece 8. The cross slide 4 is connected to a drive device 6 that drives the cross slide 4 to move in the Z-direction. The drive device 6 can be a pneumatic cylinder or a hydraulic cylinder. A first support spring 54 is fitted onto the positioning sleeve 52. One end of the first support spring 54 abuts against the positioning sleeve 52, and the other end abuts against the guide sleeve 51. When there is no external force, the support spring supports the relative position between the guide sleeve 51 and the positioning sleeve 52. A second support spring 55 is fitted on the detection pin 53. One end of the second support spring 55 abuts against the detection pin 53, and the other end of the second support spring 55 abuts against the positioning sleeve 52.
[0039] refer to Figures 1-4 Under the operation of the drive device 6, when there is an external force, the guide sleeve 51 remains stationary, the first support spring 54 and the second support spring 55 are compressed, the positioning sleeve 52 and the detection pin 53 move upward toward the workpiece 8, the detection pin 53 uses the contact part 531 to contact the curved surface of the workpiece 8 to be measured, the end of the positioning sleeve 52 cooperates with the inner hole of the workpiece 8 to further position the workpiece 8, the detection pin 53 continuously and passively corrects its position during the contact process, thereby forcing the slider of the cross slide 4 carrying the measuring component to passively adjust in the X and Y directions and the slider of the Z support slide 3 to make corresponding Z-direction displacement. Based on the X and Y direction movement of the cross slide 4 and the Z direction movement of the Z support slide 3, it is determined whether the curved surface of the workpiece 8 to be measured meets the requirements.
[0040] refer to Figures 1-3To better mate the contact portion 531 of the detection pin 53 with the workpiece 8 and provide more freedom for the detection pin 53, a bracket 11 is bolted to the support base plate 1. A rotating sleeve 56 is slidably connected to one end of the positioning sleeve 52 near the cross slide table 4. The positioning sleeve 52 and the rotating sleeve 56 are restricted to sliding against each other only in the axial direction. A spring can also be installed between the rotating sleeve 56 and the positioning sleeve 52. The bracket 11 supports the rotation of the rotating sleeve 56, thereby providing a certain degree of freedom for the detection pin 53 to swing at a certain angle during the contact process with the curved surface of the workpiece 8. A sixth sensor 96 is installed on the rotating sleeve 56. An extension block 521 extends outward from the positioning sleeve 52. The detection end of the sixth sensor 96 is connected to the extension block 521, so that the sixth sensor 96 is used to detect the absolute position of the positioning sleeve 52 in the Z direction.
[0041] refer to Figure 1 and Figure 2 A fifth sensor 95 is installed at one end of the positioning sleeve 52 near the cross slide 4. The detection end of the fifth sensor 95 is connected to the detection pin 53, so that the fifth sensor 95 is used to measure the relative position between the detection pin 53 and the positioning sleeve 52.
[0042] refer to Figures 1-3 The bracket 11 on the cross slide 4 is equipped with a fourth sensor 94 and a third sensor 93. The detection ends of the fourth sensor 94 and the third sensor 93 are connected to the rotating sleeve 56, respectively, and are connected to the upper and lower ends of the rotating sleeve 56. The third sensor 93 and the fourth sensor 94 are used to detect the rotation angle of the rotating sleeve 56 in the X and Z planes when it generates a swing angle.
[0043] refer to Figure 1 A seventh sensor 7 is bolted to the base 2. The detection end of the seventh sensor 7 is connected to the Z-axis support slide 3 and is used to detect the Z-axis position of the slider of the Z-axis support slide 3 so as to compensate for the Z-axis measured data of the surface under test.
[0044] refer to Figure 4 The cross slide 4 is equipped with a first sensor 91 and a second sensor 92. The first sensor 91 is used to detect the X-direction displacement of the slider on the cross slide 4, and the second sensor 92 is used to detect the Y-direction displacement of the slider on the cross slide 4.
[0045] refer to Figure 1 and Figure 2 The bottom of the cross slide 4 is connected to the drive device 6 by a connecting rod 71. A compression spring 72 abuts against the cross slide 4, so that the drive device 6 can push the cross slide 4 flexibly when it is running, so as to avoid damage to the product being tested.
[0046] refer to Figure 1 and Figure 2A tension spring 21 is bolted to the base 2. One end of the tension spring 21 is connected to the base 2, and the other end of the tension spring 21 is connected to the slider on the Z-axis support slide 3. The tension spring 21 provides Z-axis support tension to the slider on the Z-axis support slide 3, so that the Z-axis support slide can more stably support the position of the cross slide 4.
[0047] Operating Procedure: The workpiece 8 to be tested is moved onto the guide sleeve 51 for coarse positioning. Then, the drive device 6 moves the cross slide 4 upwards, compressing the first support spring 54 and the second support spring 55. The positioning sleeve 52 and the detection pin 53 move upwards until one end of the positioning sleeve 52 extends into the inner hole of the workpiece 8 and the contact part 531 of the detection pin 53 contacts the curved surface of the workpiece 8. During this movement, the cross slide 4, the rotating sleeve 56, and the Z-axis support slide 3 move passively, maximizing the contact between the contact part 531 and the curved surface of the workpiece 8. Data from the third sensor 93, fourth sensor 94, fifth sensor 95, sixth sensor 96, and seventh sensor 7 are transmitted to the computer. The position of the curved surface of the workpiece 8 in the Z-direction is calculated using a pre-set program. The first sensor 91 detects the position of the curved surface in the X-direction, and the second sensor 92 detects the position of the curved surface in the Y-direction. Finally, the system calculates whether the curved surface is within the specified range. After the measurement is completed, the piston rod of the drive device 6 is reset, causing all the parts above it to move downwards, so that the detection pin 53 is disengaged from the measured hole, making it easier to remove the measured workpiece 8.
[0048] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A measuring mechanism for detecting the position of a curved surface of a control arm, characterized in that, include: A supporting base plate (1) is provided on the supporting base plate (1), and a base (2) is provided on the base (2). A Z-axis supporting slide (3) is provided on the base (2). A cross slide (4) is connected to the Z-axis supporting slide (3). A measuring component for cooperating with the curved surface position of the workpiece (8) is provided on the slider of the cross slide (4). The cross slide (4) supports the movement of the measuring component in the X and Y directions. The measuring component includes a guide sleeve (51), a positioning sleeve (52), and a detection pin (53). The guide sleeve (51) is away from the cross slide ( 4) One end is used to support the position of the workpiece (8). The positioning sleeve (52) is set in the guide sleeve (51) and slides with the guide sleeve (51). The positioning sleeve (52) can rotate in the guide sleeve (51). The detection pin (53) is set in the positioning sleeve (52) and slides with the positioning sleeve (52). One end of the detection pin (53) is provided with a fitting part (531) that matches the standard curved surface of the workpiece (8). The cross slide (4) is connected to a driving device (6) that drives the cross slide (4) to move in the Z direction.
2. The measuring mechanism for detecting the position of a control arm curved surface according to claim 1, characterized in that: A first support spring (54) is fitted on the positioning sleeve (52). One end of the first support spring (54) abuts against the positioning sleeve (52), and the other end of the first support spring (54) abuts against the guide sleeve (51). When there is no external force, the first support spring (54) is used to support the relative position between the guide sleeve (51) and the positioning sleeve (52).
3. The measuring mechanism for detecting the position of a control arm curved surface according to claim 1, characterized in that: A second support spring (55) is sleeved on the detection pin (53). One end of the second support spring (55) abuts against the detection pin (53), and the other end of the second support spring (55) abuts against the positioning sleeve (52).
4. A measuring mechanism for detecting the position of a control arm curved surface according to claim 1, characterized in that: A bracket (11) is provided on the support base plate (1). A rotating sleeve (56) is axially slidably connected to one end of the positioning sleeve (52) near the cross slide table (4). The bracket (11) supports the rotation of the rotating sleeve (56). A sixth sensor (96) is provided on the rotating sleeve (56). An extension block (521) extends outward from the positioning sleeve (52). The detection end of the sixth sensor (96) is connected to the extension block (521). The sixth sensor (96) is used to detect the absolute position of the positioning sleeve (52) in the Z direction.
5. A measuring mechanism for detecting the position of a control arm curved surface according to claim 1 or 4, characterized in that: The positioning sleeve (52) is equipped with a fifth sensor (95) at one end near the cross slide (4). The detection end of the fifth sensor (95) is connected to the detection pin (53). The fifth sensor (95) is used to measure the relative position between the detection pin (53) and the positioning sleeve (52).
6. A measuring mechanism for detecting the position of a control arm curved surface according to claim 5, characterized in that: The cross slide (4) is equipped with a fourth sensor (94) and a third sensor (93). The detection ends of the fourth sensor (94) and the third sensor (93) are both connected to the rotating sleeve (56) to detect the rotation angle of the rotating sleeve (56) in the X and Z planes.
7. A measuring mechanism for detecting the position of a control arm curved surface according to claim 1, characterized in that: A seventh sensor (7) is provided on the base (2). The detection end of the seventh sensor (7) is connected to the Z-direction support slide (3) and is used to detect the Z-direction position of the Z-direction support slide (3) so as to compensate for the Z-direction measured data of the surface under test.
8. A measuring mechanism for detecting the position of a control arm curved surface according to claim 6, characterized in that: The cross slide (4) is provided with a first sensor (91) and a second sensor (92). The first sensor (91) is used to detect the X-direction displacement of the slider on the cross slide (4), and the second sensor (92) is used to detect the Y-direction displacement of the slider on the cross slide (4).
9. A measuring mechanism for detecting the position of a control arm curved surface according to claim 1, characterized in that: The bottom of the cross slide (4) is connected to the drive device (6) by a connecting rod (71), and a compression spring (72) abuts between the connecting rod (71) and the cross slide (4).
10. A measuring mechanism for detecting the position of a control arm curved surface according to claim 1, characterized in that: A tension spring (21) is provided on the base (2). One end of the tension spring (21) is connected to the base (2), and the other end of the tension spring (21) is connected to the slider on the Z-direction support slide (3). The tension spring (21) provides Z-direction support force to the slider on the Z-direction support slide (3).