Machining tool and method for improving size stability of car lamp

Abstract

According to the machining tool and method for improving the size stability of the automobile lamp, the lamp is fixed with the lampshade as the positioning reference, the position of the lamp is detected before machining, and therefore the size stability of a product obtained through machining is improved, and the machining quality of the finished automobile lamp obtained through machining is effectively guaranteed. The tool comprises a machining base, the machining base is provided with a clamping station, the clamping station comprises a positioning supporting mechanism and a fixing mechanism, the positioning supporting mechanism is used for positioning and supporting a car lamp lampshade in the X direction, the Y direction and the Z direction, the machining base is further provided with a detection station, and the detection station comprises an X-direction detection mechanism, a Y-direction detection mechanism and a Z-direction detection mechanism. The device is used for detecting lampshade positioning and welding conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lamp processing, and in particular to a processing tool and method for improving the dimensional stability of a vehicle lamp. Background Art

[0002] Automobile lights generally consist of two parts: a lampshade and a housing. The lampshade and the housing are welded together to form a lamp with other parts. Currently, in the production and processing of automobile lights, factors affecting the dimensional stability of the lamps include the deformation of the lampshade and the housing, welding stability, and stress relief process. Any change in any link will have a direct impact on the dimensional stability of the lamp and affect the quality of the finished automobile lights. For this reason, it is very necessary to reduce the impact of the above processes on the dimensional stability of the lamps. Summary of the Invention

[0003] In response to the problem of how to improve the dimensional stability of lamps to ensure the processing quality of finished car lamps, the present invention provides a processing tool and method for improving the dimensional stability of car lamps. The tool fixes the lamp by using the lampshade as a positioning reference and detects the position of the lamp before processing, thereby improving the dimensional stability of the processed product and effectively ensuring the processing quality of the finished car lamps.

[0004] The technical solution is as follows: a processing tool for improving the dimensional stability of a vehicle lamp, comprising a processing base, the processing base being provided with a clamping station, the clamping station comprising a positioning support mechanism and a fixing mechanism, the positioning support mechanism being used to position and support the vehicle lampshade in the X, Y, and Z directions, the X, Y, and Z directions being perpendicular to each other, characterized in that the fixing mechanism is used to respectively support the lamp from the X, Y, and Z directions and to make the lampshade fit the positioning support mechanism, the processing base being further provided with an inspection station, the inspection station comprising an X-direction inspection mechanism, a Y-direction inspection mechanism, and a Z-direction inspection mechanism, the Z-direction inspection mechanism being used to inspect the fit between the lampshade and the positioning support mechanism in the Z direction, the Y-direction inspection mechanism being used to inspect the fit between the lampshade and the positioning support mechanism in the Y direction, and the relative position between the shell and the lampshade after welding, and the X-direction inspection mechanism being used to inspect the fit between the lampshade and the positioning support mechanism in the X direction, and the relative position between the shell and the lampshade after welding.

[0005] Furthermore, the positioning support mechanism includes a positioning mechanism and a supporting mechanism, the supporting mechanisms are respectively located at the bottom of both sides of the lampshade in the X direction and the bottom of both sides in the Y direction, the positioning mechanism includes a positioning block 1 located on one side of the lampshade in the X direction and a positioning block 2 located on one side of the lampshade in the Y direction, the positioning block 1 and the positioning block 2 are respectively in contact with the side of the lampshade through the lampshade contour surface, the fixing mechanism includes a propulsion mechanism 1, a propulsion mechanism 2 and a pressing mechanism, the propulsion mechanism 1 is located on the other side of the lampshade in the X direction, and the propulsion mechanism 2 is located on the other side of the lampshade in the Y direction.

[0006] Furthermore, the Z-direction detection mechanism detects the fit between the lampshade and the supporting mechanism at least at three locations; and the Y-direction detection mechanism is installed on the second propulsion mechanism.

[0007] Furthermore, the inspection station also includes a screw detection mechanism, which is used to detect whether a screw is installed at the drilling position.

[0008] A processing method for improving the dimensional stability of a vehicle lamp is characterized in that the processing is performed using the above-mentioned processing tooling.

[0009] Furthermore, the processing method specifically includes the following steps: S1, placing the lamp; placing the lampshade of the lamp on the positioning support mechanism;

[0010] S2. Clamp the lamp; the fixing mechanism cooperates with the positioning support mechanism and clamps the lamp using the lampshade as a positioning reference;

[0011] S3, detection; the Z-direction detection mechanism is used to detect the fitting of the lampshade and the positioning support mechanism in the Z direction, the Y-direction detection mechanism is used to detect the fitting of the lampshade and the positioning support mechanism in the Y direction, and the relative position of the housing and the lampshade after welding, and the X-direction detection mechanism is used to detect the fitting of the lampshade and the positioning support mechanism in the X direction, and the relative position of the housing and the lampshade after welding. If the test result meets the requirements, step 4 is performed; if the test result does not meet the requirements, step 7 is performed;

[0012] S4, drilling and milling processing: using the drilling and milling tooling and the drilling and milling cutter head to process the shell according to the set coordinate values;

[0013] S5, clamping and releasing: after drilling and milling are completed, release the fixing mechanism;

[0014] S6, take out the finished lamps, and the processing process ends;

[0015] S7, clamp and release; release the fixing mechanism;

[0016] S8, lamp isolation; if the lamp fails the inspection, the lamp will be isolated and the processing flow ends.

[0017] Furthermore, in step 1, when placing the lamp, the lamp is placed on the support mechanism of the positioning support mechanism, and the support mechanism is located at least at the bottom of both sides of the lampshade in the X direction and the bottom of both sides in the Y direction; in step 2, when clamping the lamp, the propulsion mechanism 1 and the propulsion mechanism 2 of the fixing mechanism are controlled to push the lamp so that the lampshade contacts the positioning block 1 and the positioning block 2, and the pressing mechanism of the fixing mechanism is controlled to press on the surface of the lamp, and when in contact, the propulsion mechanism 1 and the positioning block 1 are used to determine the X-direction positioning of the lamp, the propulsion mechanism 2 and the positioning block 2 are used to determine the Y-direction positioning of the lamp, and the pressing mechanism and the support mechanism are used to determine the Z-direction positioning of the lamp.

[0018] Furthermore, after the lamp is clamped in step 2, the lampshade achieves zero-gap fitting contact with the positioning block 1, the positioning block 2, and the supporting mechanism.

[0019] Furthermore, in step 3, the method for determining whether the test result meets the requirements is as follows: clamp the standard parts of the lamp on the processing tooling through steps 1, 2, and 3 and detect them, set the position obtained by detection as the reference position, and set a certain threshold for the detection mechanism based on the reference position. When the test result of the lamp to be processed is within the set threshold range, the test result meets the requirements; when the test result of the lamp to be processed is not within the set threshold range, the test result does not meet the requirements.

[0020] Furthermore, in step 3, a screw detection mechanism is used to detect whether a screw is installed at the drilling position. If the screw is not installed, it is considered that the detection result meets the requirements; if the screw is installed, it is considered that the detection result does not meet the requirements.

[0021] Beneficial effects: In this solution, the lamp is clamped in the same position of the tooling by using the positioning support mechanism with the lampshade not involved in the processing as the positioning reference, ensuring the accuracy of the drilling and milling cutter head processing position. At the same time, before processing, the X-axis detection mechanism, Y-axis detection mechanism and Z-axis detection mechanism are used to detect the fit between the lampshade and the tooling, and the X-axis detection mechanism and Y-axis detection mechanism are used to detect the welding condition of the shell and the lampshade, so as to identify lamps with large deviations in advance and ensure the dimensional stability of the processed products. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Flow chart of the processing method of the present invention;

[0023] Figure 2 Schematic diagram of tooling structure;

[0024] Figure 3 It is a schematic diagram of the tooling structure (the pressing mechanism is omitted);

[0025] Figure 4 The figure is a schematic diagram of the tooling structure without clamping (the pressing mechanism is omitted);

[0026] Figure 5 It is a partial structural diagram of the second positioning block;

[0027] Figure 6 It is a partial structural diagram of a positioning block;

[0028] Figure 7 This is a structural diagram of the propulsion mechanism 2. DETAILED DESCRIPTION

[0029] like Figure 2-Figure 4 The tooling shown in the figure is used to improve the dimensional stability of a vehicle lamp, which includes a processing base 1, a clamping station on the processing base 1, and a positioning support mechanism and a fixing mechanism. The positioning support mechanism is used to position and support the vehicle lampshade 101 in the X, Y, and Z directions. The X, Y, and Z directions are perpendicular to each other (refer to Figure 2 , wherein the Z direction is the vertical direction of the tooling), the fixing mechanism is used to support the lamp 100 from the X, Y and Z directions respectively and make the lampshade fit with the positioning support mechanism. A detection station is also provided on the processing base, and the detection station includes an X-direction detection mechanism 2, a Y-direction detection mechanism 3 and a Z-direction detection mechanism 4. The Z-direction detection mechanism 4 is used to detect the fitting of the lampshade 101 and the positioning support mechanism in the Z direction, the Y-direction detection mechanism 3 is used to detect the fitting of the lampshade 101 and the positioning support mechanism in the Y direction, and the relative position of the shell and the lampshade 101 after welding. The X-direction detection mechanism 2 is used to detect the fitting of the lampshade 101 and the positioning support mechanism in the X direction, and the relative position of the shell and the lampshade 101 after welding.

[0030] Specifically, regarding the positioning support mechanism, the positioning support mechanism includes a support mechanism 5 and a positioning mechanism 6. The support mechanism 5 is located at the bottom of both sides of the lampshade in the X direction and the bottom of both sides in the Y direction, respectively. Figure 5 、 Figure 6 The positioning mechanism 6 includes a positioning block 1 601 located on one side of the lampshade 101 in the X direction and a positioning block 2 602 located on one side of the lampshade 101 in the Y direction. The positioning block 1 601 and the positioning block 2 602 are respectively in contact with the side of the lampshade 101 through the lampshade profiling surface. The positioning block 2 602 is also connected to the propulsion cylinder 1 603, which contacts the lampshade 101 in an inverted shape. The positioning block 2 602 is driven by the propulsion cylinder 1 603 to move in the Y direction. This arrangement can avoid scratching the lamp when taking and placing the lamp. The fixing mechanism includes a propulsion mechanism 1 7 (position as shown in FIG. Figure 3 As shown), propulsion mechanism 2 8 (position as shown Figure 4 As shown) and the pressing mechanism 9 (position as shown Figure 2 As shown), the propulsion mechanism 1 7 is located on the other side of the lampshade in the X direction, and the propulsion mechanism 2 8 is located on the other side of the lampshade in the Y direction. Figure 7 Taking the second propulsion mechanism 8 as an example, it includes a propulsion block 801 and a second propulsion cylinder 802. By controlling the second propulsion cylinder 802, the propulsion block 801 is driven to move, thereby driving the lamp 100 to move. At the same time, the propulsion block 801 is also connected to the Y-direction detection mechanism 3. Figure 7 3A is a device for detecting the relative position of the housing and the lampshade 101 after welding, and 3B is a device for detecting the fitting condition of the lampshade 101 and the positioning support mechanism.

[0031] More specifically, regarding the above-mentioned detection mechanism, for the convenience of description, the detection mechanism for detecting the fit between the lampshade 101 and the positioning support mechanism will be collectively referred to as the lampshade detection mechanism, and the detection mechanism for detecting the relative position of the shell and the lampshade 101 after welding will be collectively referred to as the shell detection mechanism. The lampshade detection mechanism and the shell detection mechanism can use displacement sensors for detection. When the lamp is fixed, the sensor moves forward to measure the position of the lampshade and the shell. In addition, the Z-direction detection mechanism 4 detects the fit between the lampshade 101 and the support mechanism 5 at least three locations. The detection station also includes a screw detection mechanism 10. The screw detection mechanism 10 can use a laser sensor to detect whether screws are installed at the drilling position.

[0032] In addition, combined Figure 3 The tooling also includes: a die-changing handle 12. Considering that the drilling and milling tooling involves die-changing and transportation when changing products, four die-changing handles are installed on both sides of the drilling and milling tooling to improve the portability of the tooling transfer;

[0033] The three-coordinate calibration hole 13 can be used to calibrate the three-coordinates of the drilling and milling tooling to confirm the machining accuracy of each positioning block;

[0034] Positioning pin hole 14: Considering the installation of the drilling and milling tooling after the mold is changed, two positioning pin holes are processed on both sides of the drilling and milling tooling to ensure the consistency of the position of the drilling and milling tooling base plate after the mold is changed.

[0035] The following describes the processing method to improve the dimensional stability of the lamp, combined with Figure 1-Figure 7 The method comprises the following steps: S1, placing the lamp; placing the lampshade 101 of the lamp on the positioning support mechanism. Specifically, when placing the lamp, place the lamp on the support mechanism 5 of the positioning support mechanism. The support mechanism 5 is at least located at the bottom of both sides of the lampshade in the X direction and the bottom of both sides of the lampshade in the Y direction. The support block of the support mechanism 5 is made into a profiling block according to the size data of the lampshade, and is required to be zero-fit with the surface of the lampshade (i.e., zero-gap fit). The zero-fit of the support block can preliminarily determine the Z-direction positioning of the lampshade.

[0036] S2. Clamp the lamp; through the cooperation of the fixing mechanism and the positioning support mechanism, the lamp is clamped with the lampshade 101 as the positioning reference. Specifically, when the lamp is clamped, first control the propulsion cylinder 1 603 to drive the positioning block 2 602 to move into place, and then control the propulsion cylinder of the propulsion mechanism 2 8 to push the lamp so that the lampshade and the positioning block 2 602 are in zero contact, and then control the propulsion cylinder of the propulsion mechanism 1 7 to push the lamp so that the lampshade 101 and the positioning block 1 601 are in zero contact, and then the clamping mechanism 11 can be controlled as needed to further clamp the lamp, and finally control the pressing mechanism 9 of the fixing mechanism to press on the surface of the lamp. When in contact, the propulsion mechanism 1 7 and the positioning block 1 601 are used to determine the X-direction positioning of the lamp, the propulsion mechanism 2 8 and the positioning block 2 602 are used to determine the Y-direction positioning of the lamp, and the pressing mechanism 9, the clamping mechanism 11 and the supporting mechanism 5 are used to determine the Z-direction positioning of the lamp.

[0037] S3. Inspection: The Z-direction inspection mechanism is used to inspect the fitting of the lampshade and the positioning support mechanism in the Z direction, and the Y-direction inspection mechanism is used to inspect the fitting of the lampshade and the positioning support mechanism in the Y direction, as well as the relative position of the shell and the lampshade after welding. The X-direction inspection mechanism is used to inspect the fitting of the lampshade and the positioning support mechanism in the X direction, as well as the relative position of the shell and the lampshade after welding. Through the above inspections, it can be determined that if the Y-direction lampshade inspection is qualified, it means that the lampshade positioning is qualified and the Y-direction size of the lampshade is qualified. If the Y-direction shell inspection is qualified, it means that the welding position is qualified and the Y-direction size of the shell is qualified. The principles in other directions are similar. At the same time, a screw inspection mechanism is used to inspect whether screws are installed at the drilling position. Finally, if the inspection result meets the requirements, step 4 is performed. If the inspection result does not meet the requirements, step 7 is performed.

[0038] Specifically, the method for determining whether the test results meet the requirements is as follows: clamp the standard parts of the lamp on the processing tooling and test them through steps 1, 2, and 3, set the position obtained by the test as the reference position, and set a certain threshold for the detection mechanism based on the reference position. When the test result of the lamp to be processed is within the set threshold range, the test result meets the requirements; when the test result of the lamp to be processed is not within the set threshold range, the test result does not meet the requirements.

[0039] S4 (the test results meet the requirements OK), drilling and milling processing; use the drilling and milling tooling and the drilling and milling cutter head to process the shell according to the set coordinate values.

[0040] S5, clamping and releasing; after drilling and milling are completed, release the fixing mechanism tightened in step 2, that is, loosen the pressing mechanism 9, the clamping mechanism 11, the propulsion cylinder of the propulsion mechanism 1 7, the propulsion cylinder of the propulsion mechanism 2 8, and the propulsion cylinder 1 603 in step 2 in sequence.

[0041] S6, take out the finished lamps, and the processing flow ends.

[0042] S7 (test result does not meet the requirements NG), clamp and release; release the fixing mechanism (for the release method, see step 5).

[0043] S8, lamp isolation; if the lamp fails the inspection, the lamp will be isolated and the processing flow ends.

[0044] By adopting the above method, the influence of part deformation, welding process and stress relief process on dimensional stability can be reduced to a certain extent. During processing, the lampshade is used as the positioning reference, the lamp is fixed in the same position, and the position and depth of the shell screw holes are processed using the drilling and milling head to ensure the stability of the processing position, and then ensure the matching dimensional stability of the car lights; at the same time, this method also measures the position of the lamp through the sensor before processing, which can greatly ensure the stability of the drilling and milling head processing while also identifying lamps with large welding position deviations in advance, thereby ensuring the processing quality of the finished car lights.

[0045] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by anyone familiar with the art within the technical scope disclosed by the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A processing tool for improving the dimensional stability of an automotive lamp, comprising a processing base, a clamping station provided on the processing base, the clamping station including a positioning support mechanism and a fixing mechanism, the positioning support mechanism being used to position and support the automotive lampshade in the X, Y, and Z directions, the X, Y, and Z directions being perpendicular to each other, characterized in that: The fixing mechanism is used to support the lamp from the X, Y and Z directions respectively and to make the lampshade fit with the positioning support mechanism. The processing base is also provided with a detection station, which includes an X-direction detection mechanism, a Y-direction detection mechanism and a Z-direction detection mechanism. The Z-direction detection mechanism is used to detect the fit between the lampshade and the positioning support mechanism in the Z direction, the Y-direction detection mechanism is used to detect the fit between the lampshade and the positioning support mechanism in the Y direction, and the relative position of the shell and the lampshade after welding. The X-direction detection mechanism is used to detect the fit between the lampshade and the positioning support mechanism in the X direction, and the relative position of the shell and the lampshade after welding.

2. The processing tool for improving the dimensional stability of a vehicle lamp according to claim 1, characterized in that: The positioning support mechanism includes a positioning mechanism and a supporting mechanism, and the supporting mechanisms are respectively located at the bottom of both sides of the lampshade in the X direction and the bottom of both sides in the Y direction. The positioning mechanism includes a positioning block 1 located on one side of the lampshade in the X direction and a positioning block 2 located on one side of the lampshade in the Y direction. The positioning block 1 and the positioning block 2 are respectively in contact with the side of the lampshade through the lampshade contouring surface. The fixing mechanism includes a propulsion mechanism 1, a propulsion mechanism 2 and a pressing mechanism. The propulsion mechanism 1 is located on the other side of the lampshade in the X direction, and the propulsion mechanism 2 is located on the other side of the lampshade in the Y direction.

3. The processing tool for improving the dimensional stability of a vehicle lamp according to claim 2, characterized in that: The Z-direction detection mechanism detects the fitting conditions between the lampshade and the supporting mechanism at least at three locations; the Y-direction detection mechanism is installed on the second propulsion mechanism.

4. The processing tool for improving the dimensional stability of a vehicle lamp according to claim 1, characterized in that: The detection station further includes a screw detection mechanism, which is used to detect whether a screw is installed at the position to be drilled.

5. A processing method for improving the dimensional stability of a vehicle lamp, characterized by: The processing is carried out using the processing tooling described in any one of claims 1 to 4.

6. The processing method for improving the dimensional stability of a vehicle lamp according to claim 5, characterized in that: The processing method specifically includes the following steps: S1, placing the lamp; placing the lampshade of the lamp on the positioning support mechanism; S2. Clamp the lamp; the fixing mechanism cooperates with the positioning support mechanism and clamps the lamp using the lampshade as a positioning reference; S3, detection; the Z-direction detection mechanism is used to detect the fitting of the lampshade and the positioning support mechanism in the Z direction, the Y-direction detection mechanism is used to detect the fitting of the lampshade and the positioning support mechanism in the Y direction, and the relative position of the housing and the lampshade after welding, and the X-direction detection mechanism is used to detect the fitting of the lampshade and the positioning support mechanism in the X direction, and the relative position of the housing and the lampshade after welding. If the test result meets the requirements, step 4 is performed; if the test result does not meet the requirements, step 7 is performed; S4, drilling and milling processing: using the drilling and milling tooling and the drilling and milling cutter head to process the shell according to the set coordinate values; S5, clamping and releasing: after drilling and milling are completed, release the fixing mechanism; S6, take out the finished lamps, and the processing process ends; S7, clamp and release; release the fixing mechanism; S8, lamp isolation; if the lamp fails the inspection, the lamp will be isolated and the processing flow ends.

7. The processing method for improving the dimensional stability of a vehicle lamp according to claim 6, characterized in that: In step 1, when placing the lamp, place the lamp on the support mechanism of the positioning support mechanism, and the support mechanism is located at least at the bottom of both sides of the lampshade in the X direction and the bottom of both sides in the Y direction; in step 2, when clamping the lamp, control the propulsion mechanism 1 and the propulsion mechanism 2 of the fixing mechanism to push the lamp so that the lampshade contacts the positioning block 1 and the positioning block 2, and control the pressing mechanism of the fixing mechanism to press on the surface of the lamp, and when in contact, the propulsion mechanism 1 and the positioning block 1 are used to determine the X-direction positioning of the lamp, the propulsion mechanism 2 and the positioning block 2 are used to determine the Y-direction positioning of the lamp, and the pressing mechanism and the support mechanism are used to determine the Z-direction positioning of the lamp.

8. The processing method for improving the dimensional stability of a vehicle lamp according to claim 7, characterized in that: Step 2: After the lamp is clamped, the lampshade is in zero-gap contact with the positioning block 1, positioning block 2, and support mechanism.

9. The processing method for improving the dimensional stability of a vehicle lamp according to claim 6, characterized in that: In step 3, the method for determining whether the test result meets the requirements is as follows: clamp the standard parts of the lamp on the processing tooling through steps 1, 2, and 3 and test them, set the position obtained by the test as the reference position, and set a certain threshold for the detection mechanism based on the reference position. When the test result of the lamp to be processed is within the set threshold range, the test result meets the requirements; when the test result of the lamp to be processed is not within the set threshold range, the test result does not meet the requirements.

10. The processing method for improving the dimensional stability of a vehicle lamp according to claim 6, characterized in that: In step 3, a screw detection mechanism is used to detect whether a screw is installed at the drilling position. If the screw is not installed, it is considered that the detection result meets the requirements; if the screw is installed, it is considered that the detection result does not meet the requirements.

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