Positioning tool for accurate chamfering machining of coating edge step difference and using method

Abstract

The invention relates to the technical field of coating machining, and particularly discloses a positioning tool for coating edge step accurate chamfering machining and a use method.The positioning tool comprises a base wheel carrier, and the two ends of the top of the base wheel carrier are provided with a first supporting mechanism and a second supporting mechanism correspondingly; a detachable adjusting gasket is further installed between the bottom end of the second supporting mechanism and the top of one end of the base wheel frame, and a plurality of idler wheels are installed on the side edges of the two ends of the base wheel frame. According to the positioning tool, auxiliary positioning of a mechanical polishing tool can be achieved, and the chamfering machining angle can be flexibly adjusted; the positioning tool is suitable for coating edge step difference chamfering machining, the chamfering machining consistency can be guaranteed, and the machining angle can be flexibly adjusted.

Description

Technical Field

[0001] The present invention relates to a positioning tool, in particular to a positioning tool for precise chamfering of coating edge step differences and a use method thereof, belonging to the technical field of coating processing. Background Art

[0002] The coating is evenly covered on the surface of the object through the painting process, which plays the role of anti-corrosion, beautification of appearance, and improvement of durability. In the surface coating process of aviation equipment, due to the use of local coating and the large coating thickness, a step difference of nearly 90° will be generated between the coated coating and the uncoated coating. During service, the step difference is easily affected by mechanical forces and airflow during flight, which accelerates the destruction and failure of the coating, causing the coating to fall off and endanger flight safety. Therefore, the step difference at the edge of the coating needs to be chamfered. However, due to the high hardness and large thickness of the coating (usually around 500μm), the efficiency of manual sandpaper polishing is very low. Although the use of mechanical polishing tools can improve work efficiency, it is easy to cause surface damage and it is difficult to ensure the polishing quality, which seriously affects the processing accuracy and production cycle.

[0003] Chinese patent CN103273522A discloses a special tool for processing the chamfer of the coating edge. The invention provides a special tool for processing the chamfer of the coating edge. A precision guide wheel is provided on the end face of the cutting tool. The taper half angle of the precision guide wheel is the same as the chamfer angle of the coating edge, which plays an effective positioning and protection role and can avoid damage to the uncoated surface. The invention has the following disadvantages: (1) Since it is difficult to ensure the uniformity of the coating thickness on the product surface during the actual coating process, the angle of the tool cannot be adjusted, making it difficult to adapt to coatings of different thicknesses and different chamfering requirements; (2) The coating thickness is usually less than 1mm, and the thickness of the chamfered object is basically at the micron level. Therefore, the chamfering accuracy is greatly affected by the dimensional accuracy of the tool parts, and cannot meet the requirements of precise chamfering. Summary of the Invention

[0004] In response to the problems in the prior art, the present invention provides a positioning tool for precise chamfering of coating edge step differences and a method for use thereof.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A positioning tool for precise chamfering of coating edge step differences comprises a base wheel frame, wherein a first supporting mechanism and a second supporting mechanism are respectively installed at both ends of the top of the base wheel frame, a detachable adjustment gasket is also installed between the bottom end of the second supporting mechanism and the top of one end of the base wheel frame, and multiple rollers are installed on both end sides of the base wheel frame.

[0007] Optionally, the base wheel frame is an I-shaped structure, including horizontal beams at both ends and a vertical beam installed between the two horizontal beams.

[0008] Optionally, the first supporting mechanism includes two L-shaped front end brackets, and the horizontal ends of the bottom of the front end brackets are connected to the tops of their corresponding crossbeams.

[0009] Optionally, the two front end brackets are symmetrically arranged on the cross beam, and the angles of the front end brackets on the cross beam are adjustable.

[0010] Optionally, the second supporting mechanism includes two triangular rear end brackets, which are installed on the top of their corresponding crossbeams and are symmetrically installed on the top of the crossbeam.

[0011] Optionally, first fixing holes are provided at both ends of the top of the beam, the horizontal end of the bottom of the front bracket, the top of the rear bracket and both ends of the adjusting gasket, and the beam is connected and installed with the front bracket, the rear bracket and the adjusting gasket through the first fixing holes and fixing bolts.

[0012] Optionally, a plurality of second fixing holes are provided through the sides of the crossbeam, and the second fixing holes are used for installing rollers.

[0013] A method for using a positioning tool for precise chamfering of coating edge step differences is provided. The method is applied to the positioning tool described above and further includes the following steps:

[0014] Step 1: Select the required grinding tool, and select the required front bracket, rear bracket and adjustment gasket according to the grinding tool, and then install the front bracket, rear bracket and adjustment gasket on the base wheel frame;

[0015] Step 2: Install the grinding tool on the top of the first support mechanism and the second support mechanism at both ends. The front part of the grinding tool is stuck between the two front-end brackets until the grinding tool no longer slides forward. The tail of the grinding tool is supported on the rear-end bracket. The grinding head of the grinding tool fits the surface of the coating to be processed. When grinding, it moves back and forth with the help of the bottom roller to achieve continuous grinding and chamfering of the coating at a fixed angle.

[0016] Beneficial effects of the present invention:

[0017] This positioning tool can assist in positioning mechanical grinding tools and flexibly adjust the chamfering processing angle; this positioning tool is suitable for the step-difference chamfering of coating edges, which can not only ensure the consistency of chamfering processing, but also flexibly adjust the processing angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a structural schematic diagram of the base wheel frame of the present invention.

[0021] Figure 3 It is a schematic diagram of the front-end support structure of the present invention.

[0022] Figure 4 This is a schematic diagram of the rear end bracket structure of the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of the adjusting gasket of the present invention.

[0024] Figure 6 This is a schematic diagram of the installation structure of the present invention and the grinding tool.

[0025] Figure 7 Schematic diagram of the comparison before and after the coating step chamfer.

[0026] In the figure: 1. Base wheel frame; 2. Front end bracket; 3. Rear end bracket; 4. Adjustment gasket; 5. First fixing hole; 6. Second fixing hole. DETAILED DESCRIPTION

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] See also Figure 1-7 As shown, a positioning tool for precise chamfering of coating edge step difference includes a base wheel frame 1, a first supporting mechanism and a second supporting mechanism are respectively installed at the two ends of the top of the base wheel frame 1, and a detachable adjusting gasket 4 is also installed between the bottom end of the second supporting mechanism and the top of one end of the base wheel frame 1, and multiple rollers are installed on the sides of both ends of the base wheel frame 1.

[0029] Specifically, the base wheel frame 1 is an I-shaped structure, including two horizontal beams at both ends and a vertical beam installed between the two horizontal beams. The vertical beam is used to define the distance between the two horizontal beams, thereby enabling the first and second support mechanisms at the top to adapt to grinding tools of different lengths.

[0030] Specifically, the first support mechanism includes two L-shaped front brackets 2, the horizontal ends of the bottom of the front brackets 2 are connected to the top of their corresponding crossbeams. The two front brackets 2 are symmetrically arranged on the crossbeam, and the angles of the front brackets 2 on the crossbeam are adjustable.

[0031] The two front brackets 2 are mounted on the top of the beam by fixing bolts, and the horizontal ends of the bottom can be rotated on the top of the beam during installation, thereby adjusting the angle between the vertical ends of the two front brackets 2, so that one end of the grinding tool can be clamped between the vertical ends of the two front brackets 2. The grinding tool is limited, making the grinding process more stable. Figure 1 As shown, the angle between the vertical ends of the two front-end supports 2 is larger on the side close to the rear-end support 3 than on the other side.

[0032] Specifically, the second support mechanism includes two triangular rear brackets 3, which are mounted symmetrically on top of their corresponding crossbeams. The tops of both rear brackets 3 are beveled, and the angle of the bevel is designed based on the size of the grinding tool to be fixed, ensuring that the grinding tool is fully and evenly confined between the two rear brackets 3.

[0033] Specifically, first fixing holes 5 are provided at both ends of the top of the beam, the horizontal end of the bottom of the front bracket 2, the top of the rear bracket 3, and both ends of the adjusting gasket 4. The beam is connected and installed with the front bracket 2, the rear bracket 3 and the adjusting gasket 4 through the first fixing holes 5 and fixing bolts.

[0034] When installing the front bracket 2, align the first fixing hole 5 on it with the first fixing hole 5 on the crossbeam. Then, insert the fixing bolt into the first fixing hole 5 and tighten it to secure. The angle of the front bracket 2 can be adjusted by rotating it during installation. When installing the rear bracket 3, first place the adjustment shim 4 of the required thickness on top of the corresponding crossbeam. Then, align the rear bracket 3, the adjustment shim 4, and the first fixing hole 5 on the crossbeam. Insert the fixing bolt into the first fixing hole 5 and tighten it to secure.

[0035] Specifically, the sides of the crossbeam are each provided with multiple second fixing holes 6 for mounting rollers. Five second fixing holes 6 are provided on the side of the crossbeam, allowing for simultaneous mounting of two to five rollers, depending on actual needs. If two rollers are to be installed, one can be mounted at each end of the crossbeam. To install the rollers, one end of a fastening bolt is inserted from the inside of the crossbeam into a second fixing hole 6, passing through the second fixing hole 6 and threadedly connected to the roller's center plate. The center plate is rotatably mounted to the roller via bearings.

[0036] A method for using a positioning tool for precise chamfering of coating edge step differences is provided. The method is applied to the positioning tool described above and further includes the following steps:

[0037] Step 1: Select the required grinding tool, and select the required front bracket 2, rear bracket 3 and adjustment gasket 4 according to the grinding tool, and then install the front bracket 2, rear bracket 3 and adjustment gasket 4 on the base wheel frame 1;

[0038] Step 2: Install the grinding tool on the top of the first support mechanism and the second support mechanism at both ends. The front part of the grinding tool is stuck between the two front-end brackets 2 until the grinding tool no longer slides forward. The tail of the grinding tool is supported on the rear-end bracket 3. The grinding head of the grinding tool fits the surface of the coating to be processed. During grinding, it moves back and forth with the help of the bottom roller to achieve continuous grinding and chamfering of the coating at a fixed angle.

[0039] When using the present invention, the front bracket 2, rear bracket 3, and adjustment spacer 4 are selected according to the grinding tool to be installed, and then the front bracket 2, rear bracket 3, and adjustment spacer 4 are installed on the base wheel frame 1. The rectangular adjustment spacer 4 of different thicknesses can be used to adjust the inclination of the coating chamfering grinding tool, realizing flexible adjustment of the angle between the chamfering grinding head and the coating contact surface to meet the needs of chamfering processing at different angles.

[0040] Then place the grinding tool to be used on top of the first support mechanism and the second support mechanism, with the front of the grinding tool stuck between the two front brackets 2 until the grinding tool no longer slides forward, and the tail of the grinding tool supported on the rear bracket 3. Select an adjustment gasket 4 of appropriate thickness and fix it between the rear bracket 3 and the base wheel frame 1, so that the grinding head of the grinding tool fits the surface of the coating to be processed. By combining different thickness adjustment gaskets 4, the height of the rear bracket 3 can be flexibly adjusted, thereby changing the angle between the grinding head and the coating to achieve different chamfering requirements. After the grinding tool is installed, Figure 6 As shown, the bottom roller can be moved back and forth during grinding, achieving continuous grinding and chamfering of the coating at a fixed angle, ensuring the consistency of the grinding process. When using the grinding tool, the operator presses the center of the grinding tool from above, making the grinding tool stable on the positioning fixture and less prone to shaking and deviation, while also driving the base wheel frame 1 at the bottom to move.

[0041] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A positioning tool for precise chamfering of coating edge step difference, characterized in that: The invention comprises a base wheel frame (1), wherein a first supporting mechanism and a second supporting mechanism are respectively installed at the two ends of the top of the base wheel frame (1), a detachable adjusting gasket (4) is also installed between the bottom end of the second supporting mechanism and the top of one end of the base wheel frame (1), and a plurality of rollers are installed on the two end sides of the base wheel frame (1).

2. A positioning tool for precise chamfering of coating edge step difference according to claim 1, characterized in that: The base wheel frame (1) is in an "I"-shaped structure, comprising horizontal beams at both ends and a vertical beam installed between the two horizontal beams.

3. A positioning tool for precise chamfering of coating edge step difference according to claim 2, characterized in that: The first supporting mechanism comprises two L-shaped front-end brackets (2), and the horizontal ends of the bottoms of the front-end brackets (2) are connected to the tops of their corresponding crossbeams.

4. A positioning tool for precise chamfering of coating edge step difference according to claim 3, characterized in that: The two front end brackets (2) are symmetrically arranged on the cross beam, and the angles of the front end brackets (2) on the cross beam are adjustable.

5. The positioning tool for precise chamfering of coating edge step difference according to claim 4, characterized in that: The second supporting mechanism comprises two triangular rear end brackets (3), and the two rear end brackets (3) are mounted on the tops of their corresponding crossbeams and are symmetrically mounted on the tops of the crossbeams.

6. A positioning tool for precise chamfering of coating edge step difference according to claim 5, characterized in that: First fixing holes (5) are provided through the top ends of the crossbeam, the horizontal end of the bottom of the front bracket (2), the top of the rear bracket (3), and the two ends of the adjusting gasket (4). The crossbeam is connected and installed with the front bracket (2), the rear bracket (3), and the adjusting gasket (4) through the first fixing holes (5) and fixing bolts.

7. A positioning tool for precise chamfering of coating edge step difference according to claim 6, characterized in that: A plurality of second fixing holes (6) are provided through the side edges of the crossbeam, and the second fixing holes (6) are used for installing rollers.

8. A method for using a tool for precise chamfering of coating edge step differences, characterized in that: The method of use is applied to the positioning tool of claim 7 above, and the method of use further includes the following steps: Step 1: Select the required grinding tool, and select the required front bracket (2), rear bracket (3) and adjustment gasket (4) according to the grinding tool, and then install the front bracket (2), rear bracket (3) and adjustment gasket (4) on the base wheel frame (1); Step 2: Install the grinding tool on the top of the first support mechanism and the second support mechanism at both ends, the front of the grinding tool is stuck between the two front supports (2) until the grinding tool no longer slides forward, the tail of the grinding tool is supported on the rear support (3), the grinding head of the grinding tool is in contact with the surface of the coating to be processed, and the bottom roller is used to move back and forth during grinding to achieve continuous grinding and chamfering of the coating at a fixed angle.

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