Machining technology for achieving high-quality and high-efficiency roughing of steering wheel

Abstract

A machining technology for achieving high-quality and high-efficiency roughing of a steering wheel comprises the following steps that (1) the steering wheel is grabbed and transferred, specifically, the steering wheel is placed on machining equipment, and the steering wheel is provided with a two-dimensional code and a function mark; the machining equipment comprises a base, a mechanical arm arranged on the base, a clamping jaw arranged on the mechanical arm, a CCD imaging system, a laser device, a two-dimensional code recognition system arranged on one side of the laser device and a system controller. (2) confirming the position and the model of the function mark; (3) the steering wheel is roughened, a system controller of machining equipment controls a laser to conduct roughening on the steering wheel, the steering wheel is driven by a clamping jaw to rotate intermittently, and the laser conducts micro groove line machining on the steering wheel; and (4) confirming the roughening effect of the steering wheel. The processing efficiency is effectively improved, the roughing effect consistency is good, the line spacing is effectively controlled, and the bonding effect of leather and a steering wheel foaming layer is effectively enhanced.

Description

Technical Field

[0001] The invention relates to a roughening process, in particular to a processing technology for achieving high-quality and high-efficiency roughening of a steering wheel. Background Art

[0002] With the vigorous development of my country's automobile industry and people's pursuit of automobile safety, aesthetics and comfort, the processing requirements for automobile internal parts are becoming more and more stringent. The core function of the steering wheel is to accurately control the direction of the car, so it needs to be used frequently by the driver. In order to improve the comfort and aesthetics of the steering wheel, it is necessary to wrap leather on the foam layer of the steering wheel and roughen the steering wheel to enhance the bonding effect between the leather and the foam layer of the steering wheel. The traditional technical solution adopts the method of manually roughening the steering wheel. This technical solution has the disadvantages of low efficiency (120s / pcs), high labor cost, easy to cause environmental pollution, and more importantly, poor consistency of the roughening effect. Summary of the invention

[0003] Based on this, it is necessary to provide a processing technology for achieving high-quality and efficient roughening of steering wheels in view of the shortcomings in the prior art.

[0004] A processing technology for achieving high-quality and efficient roughening of a steering wheel, for roughening the front and back surfaces of the steering wheel, so as to form regularly distributed micro-groove lines on the outer surfaces of the front and rear sides of the steering wheel, characterized in that it comprises the following steps:

[0005] (1) Grasping and transferring the steering wheel: placing the steering wheel on a processing device, wherein the steering wheel is provided with a two-dimensional code and a functional mark. The processing device comprises a base, a mechanical arm mounted on the base, a gripper mounted on the mechanical arm, a CCD imaging system, a laser, a two-dimensional code recognition system provided on one side of the laser, and a system controller. The processing positions on the front and back sides of the steering wheel are divided into 3 o'clock position, 6 o'clock position, 9 o'clock position and 12 o'clock position; when the mechanical arm transfers the steering wheel to a set position below the laser, the plane formed by the 3 o'clock position, 6 o'clock position, 9 o'clock position and 12 o'clock position on the steering wheel is perpendicular to the direction of the laser optical axis;

[0006] (2) Confirmation of the position and model of the function mark: the CCD imaging system captures the image of the function mark on the steering wheel and feeds it back to the system controller. The system controller compares the image of the function mark captured by the CCD imaging system with the standard image to determine whether the placement position of the steering wheel is correct; the QR code recognition system scans the QR code on the steering wheel to identify the model of the steering wheel;

[0007] (3) Roughening of the steering wheel: the system controller of the processing equipment controls the laser to perform roughing processing on the steering wheel, and the steering wheel is driven to rotate intermittently by the clamping jaws. The area to be processed should be perpendicular to the optical axis direction and within the focal depth range. The laser performs micro-groove line processing on the steering wheel;

[0008] (4) Confirm the effect of roughening the steering wheel.

[0009] The beneficial effect of the processing technology for achieving high-quality and efficient roughening of the steering wheel of the present invention is: combining the characteristics of laser transmission, laser roughening is used to form micro-groove lines on the steering wheel, which effectively improves the processing efficiency, has good consistency of roughening effect, and effectively controls the line spacing, effectively enhancing the bonding effect between the leather and the foaming layer of the steering wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a process flow chart of the present invention;

[0011] Figure 2 It is a structural schematic diagram of a processing device for roughening a steering wheel in the present invention;

[0012] Figure 3 A top view of a steering wheel that is a processing object of the present invention;

[0013] Figures 4 to 6 It is a schematic diagram of processing different types of micro groove lines on a steering wheel according to the present invention;

[0014] Figure 7 This is a diagram showing the effect of processing micro groove lines on a product according to the present invention. DETAILED DESCRIPTION

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0017] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0018] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0021] See also Figure 1 , Figure 2 , Figure 3 and Figure 7 The present invention provides a processing technology for achieving high-quality and efficient roughening of a steering wheel, which is used to roughen the front and back sides of a steering wheel 100, thereby forming regularly distributed micro-groove lines 105 on the outer surface of the front or rear side of the steering wheel 100. The front side of the steering wheel 100 is the side facing the driver, and vice versa.

[0022] Please continue reading Figures 4 to 6 In one embodiment, the micro-groove lines 105 are straight lines, the micro-groove lines 105 are parallel to each other and are evenly spaced. In another embodiment, the micro-groove lines 105 are straight lines, the micro-groove lines 105 on the steering wheel 100 are divided into two groups, the micro-groove lines 105 in the same group are parallel to each other and are evenly spaced. The two groups of micro-groove lines 105 are cross-set. Of course, the micro-groove lines 105 can also be set as dotted line segments composed of dots. The steering wheel 100 is provided with a two-dimensional code and a functional mark formed by laser, and the processing technology for achieving high-quality and efficient roughening of the steering wheel includes the following steps:

[0023] (1) Grab and transfer the steering wheel 100. Place the steering wheel 100 on a processing device. The processing device includes a base 10, a mechanical arm 20 mounted on the base 10, a gripper 30 mounted on the mechanical arm 20, a CCD imaging system 60, a laser 40, a two-dimensional code recognition system 50 disposed on one side of the laser 40, and a system controller. In this embodiment, the mechanical arm 20 is a six-axis robot. The mechanical arm 20 is used to transfer the front or back side of the steering wheel 100 to a set position below the laser 40. The gripper 30 uses a pneumatic chuck to achieve rapid clamping of the steering wheel 100. The processing positions of the front and back sides of the steering wheel 100 are divided into 3 o'clock position 101, 6 o'clock position 103, 9 o'clock position 102 and 12 o'clock position 104. When the robot arm 20 transfers the steering wheel 100 to the set position below the laser 40 , the plane formed by the 3 o'clock position 101 , the 6 o'clock position 103 , the 9 o'clock position 102 and the 12 o'clock position 104 on the steering wheel 100 is perpendicular to the optical axis direction of the laser 40 .

[0024] (2) Confirmation of the position and model of the function mark. The CCD imaging system 60 captures the image of the function mark on the steering wheel 100 and feeds it back to the system controller. The system controller compares the image of the function mark captured by the CCD imaging system 60 with the standard image to determine whether the placement of the steering wheel 100 is correct. If the placement is incorrect, the operator is reminded by sound and light.

[0025] The two-dimensional code recognition system 50 scans the two-dimensional code on the steering wheel 100. On the one hand, it can identify the model of the steering wheel 100. In the subsequent processing process, the system controller processes the steering wheel 100 according to the set processing parameters. On the other hand, it can record the processing information (such as quantity, model, processing date, etc.) to facilitate subsequent tracking. Among them, the steering wheel 100 models specifically involve AUDIB9 flat bottom, MQB inclined groove, BMV sponge model, HS5 heating model, etc., totaling 15 types.

[0026] Before step (2), the processing parameters corresponding to each model of steering wheel 100 are set, including the power of the laser 40, the laser scanning speed, the number of laser scanning times, the line spacing, the line type (straight line or dotted line), etc. In this embodiment, the laser 40 is a carbon dioxide laser 40 with a wavelength of 10.6μm and a power of 250W.

[0027] (3) The steering wheel 100 is roughened. The system controller of the processing equipment controls the laser 40 to perform roughening processing on the steering wheel 100. During processing, the roughening accuracy of the laser 40 is less than 2mm, the roughening accuracy of the laser itself is ±0.2mm, the repeatability is ±0.05mm, and the roughening efficiency is 36s / pcs. During the roughening process of the steering wheel 100, for the 3 o'clock and 9 o'clock positions 102, the line spacing is greater than 1mm and less than 2mm; for the 6 o'clock and 12 o'clock positions 104, the line spacing is greater than or equal to 2mm and less than 3mm; during the roughening process of each area, the steering wheel 100 is driven to rotate by the clamp 30, and the area to be processed must be perpendicular to the optical axis direction and within the focal depth range.

[0028] When the clamp 30 drives the steering wheel 100 to rotate, the steering wheel 100 is intermittently rotated clockwise or counterclockwise. In the first stage, the extension direction of the first micro-groove line 105 on the front of the steering wheel 100 is first roughened, and then the steering wheel 100 is rotated clockwise or anticlockwise to the next position to be roughened, and the laser 40 processes the second micro-groove line 105 of the steering wheel 100, and the above steps are repeated until the roughening of the front of the steering wheel 100 is completed; during roughening, the angle of the galvanometer inside the laser 40 is adjusted so that the laser 40 can perform roughening along the extension direction of the micro-groove line 105.

[0029] In the second stage, the steering wheel is placed in reverse, and the extension direction of the first micro-groove line 105 on the back of the steering wheel 100 is firstly roughened, and then the steering wheel 100 is rotated clockwise or clockwise to the next position to be roughened, and the laser 40 processes the second micro-groove line 105 of the steering wheel 100, and the above steps are repeated until the roughening of the back of the steering wheel 100 is completed.

[0030] In addition, in order to prevent environmental pollution and improve the workshop working environment, the processing equipment also includes a smoke extraction device, which is arranged above the laser 40. During the roughening process of the steering wheel 100, the smoke extraction process is carried out.

[0031] (4) Confirmation of the roughening effect of the steering wheel 100. To ensure qualified bonding, 32N / m, 36N / m, 38N / m, and 40N / m dyne liquids are used to detect the foaming state of the steering wheel 100 to ensure that the foamed or plastic bracket surfaces at the 3, 6, and 9 o'clock positions of the steering wheel 100 reach above 38N / m, and the surface 104 at the 12 o'clock position reaches above 36N / m. The larger the dyne liquid value, the better the wettability of the roughened surface of the steering wheel 100, that is, the foaming layer and the leather of the steering wheel 100 can be better bonded together.

[0032] During the test, a 32N / m, 36N / m, 38N / m, and 40N / m dyne test pen is used to draw a line on the steering wheel 100 in sequence. If the test pen wets the surface of the substrate within 2 seconds and no breakpoint or stagnation occurs, the surface tension of the substrate is greater than or just the selected value. If it shrinks into water beads (spherical) or a breakpoint occurs within 2 seconds, the value before this test is regarded as the surface energy of the substrate. For example, a 36N / m dyne test pen is used to draw a line on the steering wheel 100, and the test pen wets the surface of the substrate within 2 seconds. Then a 38N / m dyne test pen is used to draw a line on the steering wheel 100. If it shrinks into water beads (spherical) within 2 seconds, the surface energy of the substrate is regarded as 36N / m.

[0033] The beneficial effect of the processing technology for achieving high-quality and efficient roughening of the steering wheel of the present invention is: combining the characteristics of laser transmission, laser roughening is used to form micro-groove lines 105 on the steering wheel 100, which effectively improves the processing efficiency, has good consistency in the roughening effect, and effectively controls the line spacing, effectively enhancing the bonding effect between the leather and the foam layer of the steering wheel 100.

[0034] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A processing technology for achieving high-quality and efficient roughening of a steering wheel, which is used to roughen the front and back surfaces of the steering wheel, thereby forming regularly distributed micro-grooved lines on the outer surfaces of the front and rear sides of the steering wheel, characterized in that: The following steps are involved: (1) Grasping and transferring the steering wheel: placing the steering wheel on a processing device, wherein the steering wheel is provided with a two-dimensional code and a functional mark. The processing device comprises a base, a mechanical arm mounted on the base, a gripper mounted on the mechanical arm, a CCD imaging system, a laser, a two-dimensional code recognition system provided on one side of the laser, and a system controller. The processing positions on the front and back sides of the steering wheel are divided into 3 o'clock position, 6 o'clock position, 9 o'clock position and 12 o'clock position; when the mechanical arm transfers the steering wheel to a set position below the laser, the plane formed by the 3 o'clock position, 6 o'clock position, 9 o'clock position and 12 o'clock position on the steering wheel is perpendicular to the direction of the laser optical axis; (2) Confirmation of the position and model of the function mark: the CCD imaging system captures the image of the function mark on the steering wheel and feeds it back to the system controller. The system controller compares the image of the function mark captured by the CCD imaging system with the standard image to determine whether the placement position of the steering wheel is correct; the QR code recognition system scans the QR code on the steering wheel to identify the model of the steering wheel; (3) Roughening of the steering wheel: the system controller of the processing equipment controls the laser to perform roughing processing on the steering wheel, and the steering wheel is driven to rotate intermittently by the clamping jaws. The area to be processed should be perpendicular to the optical axis direction and within the focal depth range. The laser performs micro-groove line processing on the steering wheel; (4) Confirm the effect of roughening the steering wheel.

2. The processing technology for achieving high-quality and efficient roughening of steering wheels according to claim 1 is characterized in that: In step (4), 32N / m, 36N / m, 38N / m, and 40N / m dyne liquid are used to detect the foaming treatment state of the steering wheel to ensure that the surface pressure at the 3 o'clock, 6 o'clock, and 9 o'clock positions of the steering wheel reaches more than 38N / m after roughening, and the surface pressure at the 12 o'clock position reaches more than 36N / m.

3. The processing technology for achieving high-quality and efficient roughening of steering wheels according to claim 2 is characterized in that: In step (4), during the test, 32N / m, 36N / m, 38N / m, and 40N / m dyne test pens are used to draw lines on the steering wheel. If the test pen wets the surface of the substrate within 2 seconds and no breakpoints or stagnation are formed, the surface tension of the substrate is greater than or exactly the selected value. If it shrinks into water beads or breaks within 2 seconds, the value before this test is regarded as the surface energy of the substrate.

4. The processing technology for achieving high-quality and efficient roughening of steering wheels according to claim 1 is characterized in that: In step (3), during processing, the roughening accuracy of the laser is less than 2mm, the roughening accuracy of the laser itself is ±0.2mm, the repeatability is ±0.05mm, and the roughening efficiency is 36s / pcs.

5. The processing technology for achieving high-quality and efficient roughening of steering wheels according to claim 1 is characterized in that: In step (3), for the 3 o'clock and 9 o'clock position areas, the line spacing is greater than 1 mm and less than 2 mm; for the 6 o'clock and 12 o'clock position areas, the line spacing is greater than or equal to 2 mm and less than 3 mm.

6. The processing technology for achieving high-quality and efficient roughening of steering wheels according to claim 5 is characterized in that: Before step (2), the processing parameters corresponding to each type of steering wheel are set.

7. The processing technology for achieving high-quality and efficient roughening of a steering wheel according to claim 1 is characterized in that: The mechanical arm is a six-axis robot, the gripper uses a pneumatic chuck, and the laser is a carbon dioxide laser with a wavelength of 10.6 μm and a power of 250 W.

8. The processing technology for achieving high-quality and efficient roughening of a steering wheel according to claim 1 is characterized in that: In step (3), in the first stage, the first micro-groove line on the front side of the steering wheel is firstly roughened in the extension direction, and then the steering wheel is rotated clockwise or anti-clockwise to the next position to be roughened, and the laser processes the second micro-groove line on the steering wheel, and the above steps are repeated until the front side of the steering wheel is roughened; when roughening, the angle of the galvanometer inside the laser is adjusted so that the laser can perform roughening along the extension direction of the micro-groove line; in the second stage, the steering wheel is placed in reverse, and the first micro-groove line on the back side of the steering wheel is firstly roughened in the extension direction, and then the steering wheel is rotated clockwise or anti-clockwise to the next position to be roughened, and the laser processes the second micro-groove line on the steering wheel, and the above steps are repeated until the back side of the steering wheel is roughened.

9. The processing technology for achieving high-quality and efficient roughening of a steering wheel according to claim 1 is characterized in that: The micro-groove lines are straight lines or dotted line segments, and the micro-groove lines are parallel to each other and are evenly spaced.

10. The processing technology for achieving high-quality and efficient roughening of a steering wheel according to claim 1, characterized in that: The micro-groove lines are straight lines or dotted line segments. The micro-groove lines are divided into two groups. The micro-groove lines in the same group are parallel to each other and are evenly spaced. The two groups of micro-groove lines are cross-arranged.

Images