A method for milling the outline of a printed circuit board

Abstract

The invention discloses a method for milling the contour of a printed circuit board, comprising the following steps: step one: placing a plate to be processed on a bottom pad; a plurality of first positioning holes are provided on the plate to be processed, and first positioning pins corresponding to the positions of the first positioning holes are provided on the bottom pad; step two: placing the bottom pad together with the plate to be processed thereon on a processing table of a milling machine; step three: controlling the processing table to clamp the bottom pad on the processing table; at least two second positioning pins are provided on the bottom surface of the bottom pad, and a clamping pin groove for clamping / releasing the second positioning pins is provided on the processing table; step four: controlling the milling machine to mill the contour of the plate to be processed, and repeating step one with another plate to be processed and another bottom pad during the milling process; step five: after the milling contour is processed, controlling the processing table to loosen the bottom pad, and then taking out the bottom pad together with the plate on which the milling contour has been completed; step six: repeating steps two, three, four, and five with the bottom pad and the plate to be processed prepared in step four.

Description

Technical Field

[0001] The invention relates to a method for milling the outline of a printed circuit board. Background Art

[0002] At present, after the common milling process of circuit boards is completed, workers are required to remove the milled circuit boards from the processing table one by one. During the board removal, the milling machine will be idle all the time, which will lead to extremely low efficiency of the milling machine and seriously extend the working time of milling.

[0003] In addition, in the current conventional milling process, when switching the type of plate to be milled, the original pad on the milling machine work surface needs to be replaced, and then the positioning holes and pins are drilled on the new pad for the new type of plate, and finally the new pad is fixed to the milling machine work surface, so that the new type of plate can be milled. During the replacement of the pad, the milling machine will also be idle, affecting the efficiency of the machine tool.

[0004] Therefore, how to overcome the above-mentioned defects has become an important issue to be solved urgently by those skilled in the art. Summary of the invention

[0005] The present invention overcomes the shortcomings of the above-mentioned technology and provides a method for milling the outline of a printed circuit board.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A printed circuit board milling method comprises the following steps:

[0008] Step 1: Place the plate 1 to be processed on the bottom plate 2;

[0009] The plate 1 to be processed is provided with a plurality of first positioning holes 11, and the bottom plate 2 is provided with first positioning pins 21 corresponding to the positions of the first positioning holes 11 one by one;

[0010] Step 2: Place the bottom plate 2 together with the plate 1 to be processed thereon on the processing table 3 of the milling machine;

[0011] Step 3: Control the movement of the processing table 3 to clamp the bottom plate 2 onto the processing table 3;

[0012] The bottom surface of the bottom pad 2 is provided with at least two second positioning pins 22, and the processing table 3 is provided with a clamping pin groove 31 for clamping / relaxing the second positioning pins 22;

[0013] Step 4: Control the milling machine to mill the outer shape of the plate 1 to be processed, and repeat step 1 using another plate 1 to be processed and another bottom plate 2 during the milling process;

[0014] Step 5: After the milling process is completed, the processing table 3 is controlled to loosen the bottom plate 2, and then the bottom plate 2 is taken out together with the plate on which the milling process has been completed;

[0015] Step 6: Repeat steps 2, 3, 4 and 5 using the bottom plate 2 prepared in step 4 and the panel 1 to be processed.

[0016] Preferably, the clamping pin groove 31 is a straight groove, one side of the clamping pin groove 31 can be close to / away from the other side to facilitate clamping / loosening the second positioning pin 22, and the second positioning pin 22 on the bottom surface of the bottom pad 2 is arranged along the extension direction of the clamping pin groove 31.

[0017] Preferably, the second positioning pin 22 protrudes from the bottom surface of the bottom pad 2 by more than 7 mm.

[0018] Preferably, the step one further comprises: placing the plate 1 to be processed on the bottom plate 2 and then covering the surface of the plate 1 to be processed with a layer of protective member 4 , wherein the protective member 4 completely covers the plate 1 to be processed.

[0019] Preferably, the protective member 4 is a phenolic resin plate or an aluminum sheet.

[0020] Preferably, the protection member 4 is provided with a plurality of second positioning holes 41 corresponding to the positions of the first positioning holes 11 one by one.

[0021] Preferably, after the protective member 4 is covered on the panel 1 to be processed, masking tape 42 is pasted on the edge of the protective member 4 to further fix the protective member 4, the panel 1 to be processed and the bottom plate 2 together.

[0022] Preferably, a V-shaped positioning member 5 is provided in the clamping pin groove 31 , and the V-shaped positioning member 5 is fixed on one side of the clamping pin groove 31 and the V-shaped opening 51 is open toward the other side.

[0023] Preferably, after the V-shaped positioning member 5 is clamped in the clamping pin groove 31 , it forms a triangle with the clamping pin groove 31 , and the triangle is the circumscribed triangle of the second positioning pin 22 .

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The milling contour method of this case sets a clamping pin groove on the processing table and sets two second positioning pins on the bottom surface of the bottom pad, so that the bottom pad and the processing table can be quickly fixed and separated, so that the bottom pad can be quickly rotated. After the milling machine completes the milling contour processing, the bottom pad on the processing table is quickly removed together with the processed plate, and then a new bottom pad and the plate to be processed are replaced to continue milling the contour, and the processed plate can be unloaded outside the milling machine, so that the milling machine does not need to wait idle during the unloading process, which can greatly increase the effective working time of the milling machine, thereby effectively improving the processing efficiency.

[0026] 2. When it is necessary to switch models for milling the shape, the milling shape method in this case only needs to prepare the corresponding model of the bottom plate in advance. When switching models, the corresponding plate model to be processed and the bottom plate are combined and then placed on the milling machine to achieve seamless switching, thereby greatly reducing the idle time of the milling machine due to changing the milling shape model. This can also greatly increase the effective working time of the milling machine and improve processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the panels to be processed, the bottom pads and the protective parts in this case.

[0028] Figure 2 This is one of the schematic diagrams of the processing table in this case.

[0029] Figure 3 This is the second schematic diagram of the processing table in this case.

[0030] Figure 4 It is a schematic diagram of the matching of the clamping pin groove and the second positioning pin in this case. DETAILED DESCRIPTION

[0031] The features of the present invention and other related features are further described in detail below through embodiments to facilitate understanding by those skilled in the art:

[0032] like Figures 1 to 4 As shown, a printed circuit board milling method includes the following steps:

[0033] Step 1: Place the plate 1 to be processed on the bottom plate 2;

[0034] The plate 1 to be processed is provided with a plurality of first positioning holes 11, and the bottom plate 2 is provided with first positioning pins 21 corresponding to the positions of the first positioning holes 11 one by one;

[0035] Step 2: Place the bottom plate 2 together with the plate 1 to be processed thereon on the processing table 3 of the milling machine;

[0036] Step 3: Control the movement of the processing table 3 to clamp the bottom plate 2 onto the processing table 3;

[0037] The bottom surface of the bottom pad 2 is provided with at least two second positioning pins 22, and the processing table 3 is provided with a clamping pin groove 31 for clamping / relaxing the second positioning pins 22;

[0038] Step 4: Control the milling machine to mill the outer shape of the plate 1 to be processed, and repeat step 1 using another plate 1 to be processed and another bottom plate 2 during the milling process;

[0039] Step 5: After the milling process is completed, the processing table 3 is controlled to loosen the bottom plate 2, and then the bottom plate 2 is taken out together with the plate on which the milling process has been completed;

[0040] Step 6: Repeat steps 2, 3, 4 and 5 using the bottom plate 2 prepared in step 4 and the panel 1 to be processed.

[0041] As mentioned above, the milling contour method of this case needs to place the plate 1 to be processed on the bottom plate 2 at the beginning. The plate 1 to be processed is provided with a plurality of first positioning holes 11, and the bottom plate 2 is provided with first positioning pins 21 corresponding to the positions of the first positioning holes 11. In this way, the plate 1 to be processed can be put on the bottom plate 2 through the cooperation of the first positioning holes 11 and the first positioning pins 21, so that the plate 1 to be processed and the bottom plate 2 can be accurately positioned and fixed together. After placing the plate 1 to be processed on the bottom plate 2, the bottom plate 2 can be placed together with the plate 1 to be processed on the processing table 3 of the milling machine. The bottom surface of the bottom plate 2 used in the milling contour method of this case is provided with at least two second positioning pins 22, and the processing table 3 of the milling machine used itself is also provided with a clamping pin groove 31 for clamping / relaxing the second positioning pins 22. After placing the bottom pad 2 with the panel 1 to be processed on the processing table 3, the clamping pin groove 31 can be controlled to clamp the second positioning pin 22, so as to fix the bottom pad 2 on the processing table 3. After the bottom pad 2 is fixed on the processing table 3 by the clamping pin groove 31 and the second positioning pin 22, the milling machine can be controlled to start milling the outer shape of the panel 1 to be processed. While the milling machine is milling the outer shape of the panel 1 to be processed, it is necessary to take another panel 1 to be processed and the bottom pad 2, and also fix the two together by the first positioning hole 11 and the first positioning pin 21. After the milling machine has completed the milling outer shape processing, the clamping pin groove 31 can be controlled to loosen the second positioning pin 22, and then the bottom pad 2 on the processing table 3 together with the processed panel is taken out, and then the other prepared bottom pad 2 and the panel 1 to be processed are placed on the processing table 3 to relay the milling outer shape processing.

[0042] In this way, the milling method of this case sets a clamping pin groove 31 on the processing table 3 and sets two second positioning pins 22 on the bottom surface of the bottom plate 2, so that the bottom plate 2 and the processing table 3 can be quickly fixed and separated, so that the bottom plate 2 can be quickly rotated. After the milling machine completes the milling process, the bottom plate 2 on the processing table 3 is quickly removed together with the processed plate, and then replaced with a new bottom plate 2 and the plate 1 to be processed to continue milling the shape, and the processed plate can be unloaded outside the milling machine, so that the milling machine does not need to wait idle during the unloading process, which can greatly improve the effective working time of the milling machine, thereby effectively improving the processing efficiency. In addition, when it is necessary to switch models for milling the shape, the milling shape method of this case only needs to prepare the corresponding model of the bottom plate 2 in advance. When switching models, the corresponding plate model of the to-be-processed plate 1 and the bottom plate 2 are combined and then placed on the milling machine to achieve seamless switching, thereby greatly reducing the idle time of the milling machine due to changing the milling shape model. This can also greatly increase the effective working time of the milling machine and improve processing efficiency.

[0043] Preferably, the bottom pad 2 of the present invention can be reused for the same type of panel 1 to be processed.

[0044] like Figures 2 to 3 As shown, preferably, the clamping pin groove 31 is a straight groove, one side of the clamping pin groove 31 can be close to / far away from the other side to facilitate clamping / releasing the second positioning pin 22, and the second positioning pin 22 on the bottom surface of the bottom pad 2 is arranged along the extension direction of the clamping pin groove 31, so that after the bottom pad 2 is placed on the processing table 3, the second positioning pin 22 can be clamped by controlling the clamping pin groove 31 to make the two sides of the clamping pin groove 31 close to each other, thereby fixing the bottom pad 2 on the processing table 3. When the milling shape processing is completed, the clamping pin groove 31 is controlled to move again so that the two sides of the clamping pin groove 31 are far away from each other to release the second positioning pin 22, so that the bottom pad 2 can be removed from the processing table 3.

[0045] like Figures 2 to 3 As shown, preferably, the second positioning pin 22 protrudes more than 7 mm from the bottom surface of the base plate 2. In this way, it is ensured that there is sufficient contact area between the second positioning pin 22 and the clamping pin groove 31, so that the clamping pin groove 31 can firmly clamp the second positioning pin 22 to prevent the second positioning pin 22 from loosening from the clamping pin groove 31 during processing.

[0046] like Figure 1 As shown, preferably, the step one further comprises: placing the plate 1 to be processed on the bottom plate 2 and then covering the surface of the plate 1 to be processed with a layer of protective member 4, wherein the protective member 4 completely covers the plate 1 to be processed.

[0047] As described above, by covering the plate 1 to be processed with a layer of protective member 4, it is possible to effectively prevent some flying cutting chips or other foreign objects from scratching the plate during the milling process, thereby effectively improving the processing quality of the milling process.

[0048] like Figure 1 As shown, preferably, the protective member 4 is a phenolic resin plate or an aluminum sheet.

[0049] like Figure 1 As shown, preferably, the protective member 4 is provided with a plurality of second positioning holes 41 corresponding one to one with the positions of the first positioning holes 11, so that the protective member 4 can be positioned and fixed together with the plate 1 to be processed and the bottom plate 2 through the cooperation of the second positioning holes 41 and the first positioning pins 21, ensuring that the protective member 4 will not be separated from the plate 1 to be processed after part of its structure is milled off during the milling process.

[0050] like Figure 2 As shown, preferably, after the protective member 4 is covered on the panel 1 to be processed, a masking tape 42 is affixed to the edge of the protective member 4 to further fix the protective member 4, the panel 1 to be processed and the bottom plate 2 together. In this way, the panel 1 to be processed, the bottom plate 2 and the protective member 4 can be further fixed together by affixing the masking tape 42 to prevent them from loosening. At the same time, it can also ensure that foreign matter will not enter the contact surface between the bottom plate 2 and the panel 1 to be processed or between the contact surface between the protective member 4 and the panel 1 to be processed from the stacked edges of the three to scratch the panel 1 to be processed.

[0051] like Figures 2 to 4 As shown, preferably, a V-shaped positioning member 5 is provided in the clamping pin groove 31 , and the V-shaped positioning member 5 is fixed on one side of the clamping pin groove 31 and the V-shaped opening 51 is open to the other side.

[0052] As described above, when the clamping pin groove 31 is actuated to clamp the second positioning pin 22, the second positioning pin 22 will enter the V-shaped positioning member 5 through the V-shaped opening 51. As the clamping pin groove 31 narrows, the second positioning pin 22 will be positioned at a preset position under the limitation of the V-shaped positioning member 5, thereby ensuring that the position of the bottom plate 2 is consistent each time the contour is milled. In this way, combined with the positioning of the first positioning pin 21 and the first positioning hole 11, it can be ensured that the position of the plate 1 to be processed is fixed each time the contour is milled, thereby improving the accuracy of milling the contour.

[0053] like Figures 2 to 4 As shown, preferably, after the V-shaped positioning member 5 is clamped in the clamping pin groove 31 , it forms a triangle with the clamping pin groove 31 , and the triangle is the circumscribed triangle of the second positioning pin 22 .

[0054] As mentioned above, this case protects a method for milling the outline of a printed circuit board. All technical solutions that are the same or similar to this case should be deemed to fall within the scope of protection of this case.

Claims

1. A method for milling a printed circuit board, characterized in that The following steps are involved: Step 1: placing the plate to be processed (1) on the bottom plate (2); The plate to be processed (1) is provided with a plurality of first positioning holes (11), and the bottom plate (2) is provided with first positioning pins (21) corresponding one-to-one to the positions of the first positioning holes (11); Step 2: placing the bottom plate (2) together with the plate to be processed (1) thereon onto the processing table (3) of the milling machine; Step 3: Control the movement of the processing table (3) to clamp the bottom plate (2) onto the processing table (3); The bottom surface of the bottom pad (2) is provided with at least two second positioning pins (22), and the processing table (3) is provided with clamping pin grooves (31) for clamping / relaxing the second positioning pins (22); Step 4: Control the milling machine to mill the outer shape of the plate to be processed (1), and repeat step 1 using another plate to be processed (1) and another bottom plate (2) during the milling process; Step 5: After the milling process is completed, the processing table (3) is controlled to loosen the bottom plate (2), and then the bottom plate (2) is taken out together with the plate on which the milling process has been completed; Step 6: Repeat steps 2, 3, 4 and 5 using the bottom plate (2) prepared in step 4 and the plate to be processed (1); The clamping pin groove (31) is a straight groove, one side of the clamping pin groove (31) can be close to / far away from the other side to facilitate clamping / relaxing the second positioning pin (22), the second positioning pin (22) on the bottom surface of the base plate (2) is arranged along the extension direction of the clamping pin groove (31), a V-shaped positioning piece (5) is provided in the clamping pin groove (31), the V-shaped positioning piece (5) is fixed on one side of the clamping pin groove (31) and the V-shaped opening (51) is open to the other side, and after the clamping pin groove (31) is clamped, the V-shaped positioning piece (5) and the clamping pin groove (31) form a triangle, which is an external triangle of the second positioning pin (22).

2. A printed circuit board milling method according to claim 1, characterized in that The second positioning pin (22) protrudes from the bottom surface of the bottom pad (2) by more than 7 mm.

3. A printed circuit board milling method according to claim 1, characterized in that The step one further comprises: placing the plate to be processed (1) on the bottom pad (2) and then covering the surface of the plate to be processed (1) with a layer of protective member (4), wherein the protective member (4) completely covers the plate to be processed (1).

4. A printed circuit board milling method according to claim 3, characterized in that The protective member (4) is a phenolic resin plate or an aluminum sheet.

5. A printed circuit board milling method according to claim 3, characterized in that The protective member (4) is provided with a plurality of second positioning holes (41) corresponding one-to-one to the positions of the first positioning holes (11).

6. A printed circuit board milling method according to claim 3, characterized in that After the protective member (4) is covered on the plate member (1) to be processed, masking tape (42) is affixed to the edge of the protective member (4) to further fix the protective member (4), the plate member (1) to be processed and the bottom plate (2) together.

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