Positioning tool for numerical control edge milling of PIN-hole-free circuit board

Abstract

The utility model relates to the technical field of circuit board processing, and discloses a positioning tool for numerical control edge milling of a PIN-hole-free circuit board, which comprises an operating platform, the outer wall of the bottom of the operating platform is fixedly connected with a unit main body, the output end of the unit main body is fixedly connected with a rotating rod through a coupler, the operating platform is provided with a positioning mechanism, and the rotating rod is fixedly connected with the rotating rod. A circuit board is clamped and positioned in a centering mode by arranging a positioning mechanism, an auxiliary mechanism is arranged on the positioning mechanism, single arc-shaped teeth are separated and assembled by arranging the auxiliary mechanism, the positioning mechanism comprises a spur gear, and the spur gear is fixedly arranged on a rotating rod in a sleeving mode. According to the utility model, by arranging the structures such as the sliding plate and the radian plate, the circuit boards of different specifications are subjected to center point correction and clamping fixation, and the problems that the circuit boards of different specifications are processed, but a fixing device is relatively single, regular center adjustment is not easy to carry out according to the sizes of the circuit boards, and the size is unqualified when a milling cutter moves are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a positioning tooling for numerical control milling of the edge of a circuit board without PIN holes. Background Art

[0002] The numerical control milling of the edge of a finished circuit board is a key process in the PCB manufacturing process. The milling of the circuit board means that through the high-speed rotation of a milling cutter, high-precision graphics required by customers are milled at the edge, milled grooves, milled PIN holes, etc. according to the coordinate program designed by the engineering.

[0003] After retrieval, the Chinese patent publication number: CN219780525U discloses a circuit board positioning tooling, belonging to the technical field of circuit board tooling. This circuit board positioning tooling includes a positioning platform. There is a recessed part on the top of the positioning platform, and several blind holes are opened on the recessed part. A positioning member is also arranged on the positioning platform. The positioning member includes a telescopic clamping member and an electromagnet. The telescopic clamping member is arranged inside the blind hole, and one end of the telescopic clamping member is fixedly connected to the bottom of the inner wall of the blind hole. The electromagnet is arranged inside the positioning platform directly below the telescopic clamping member. A switch is arranged on one side of the positioning platform, and the switch is electrically connected to the electromagnet. After the circuit board is placed on the telescopic rod, the telescopic rod in contact with the circuit board sinks, and the other non-sunken telescopic rods limit the position of the circuit board, realizing the positioning of the circuit board. Compared with the prior art, it can position circuit boards of different shapes, and there is no need to develop new positioning tooling for special-shaped circuit boards, achieving the effect of strong versatility.

[0004] The above device has the following defects. At present, some circuit board designs used in the 5G industry do not have PIN hole positioning. For high-precision, high-accuracy, and large-size circuit board products related to the 5G industry, the size may be unqualified when the milling cutter travels, making it difficult to align with the center point of the circuit board during the milling of the circuit board edge, affecting the processing quality. Therefore, a positioning tooling for numerical control milling of the edge of a circuit board without PIN holes is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a positioning tooling for numerical control milling of the edge of a circuit board without PIN holes, aiming to improve the problem that for high-precision, high-accuracy, and large-size circuit board products related to the 5G industry in the prior art, the size may be unqualified when the milling cutter travels, making it difficult to align with the center point of the circuit board during the milling of the circuit board edge.

[0006] To achieve the above object, the utility model adopts the following technical solutions: A positioning tooling for numerically controlled milling of the edge of a circuit board without PIN holes, including an operation platform, the bottom outer wall of the operation platform is fixedly connected with a unit main body, the output end of the unit main body is fixedly connected with a rotating rod through a coupling, a positioning mechanism is arranged on the operation platform, and the circuit board is centered and clamped and positioned by arranging the positioning mechanism. An auxiliary mechanism is arranged on the positioning mechanism, and a single arc tooth is separated and assembled by arranging the auxiliary mechanism. The positioning mechanism includes a spur gear, the spur gear is fixedly sleeved on the rotating rod, a rack is meshed with the spur gear, the top outer wall of the rack is fixedly connected with a sliding plate, the outer wall of the side of the sliding plate away from the rack is fixedly connected with a radian plate, a ring groove is opened on the top outer wall of the radian plate, a support rod is fixedly connected to the inner wall of the top of the ring groove, an arc tooth is movably sleeved on the support rod, and a mounting plate is clamped on the top outer wall of the radian plate.

[0007] As a further description of the above technical solution: The auxiliary mechanism includes a T-shaped groove, the T-shaped groove is opened on the outer wall of one side of the radian plate, a T-shaped frame is slidably connected to the inner walls of both sides of the T-shaped groove, an adjusting plate is slidably connected to the inner wall of one side of the T-shaped frame, an arc-shaped block is fixedly connected to the outer wall of one side of the adjusting plate, and a small spring is fixedly connected to the outer wall of the side of the adjusting plate away from the arc-shaped block.

[0008] As a further description of the above technical solution: The spur gear is rotatably connected to the bottom outer wall of the operation platform through a bearing, and the rack is slidably connected to the bottom outer wall of the operation platform.

[0009] As a further description of the above technical solution: The sliding plate is slidably connected to the inner walls of both sides of the slideway, there are two radian plates in total, and the two radian plates are symmetrical to each other.

[0010] As a further description of the above technical solution: The arc tooth is rotatably connected to the inner wall of the bottom of the ring groove, and a grinding pad is fixedly connected to the outer wall of one side of the arc tooth.

[0011] As a further description of the above technical solution: An indication mark is opened on the outer wall of one side of the adjusting plate, the arc-shaped block penetrates through the outer wall of one side of the T-shaped frame, and the arc-shaped block is clamped on the inner wall of one side of the T-shaped groove.

[0012] As a further description of the above technical solution: The end of the small spring away from the adjusting plate is fixedly connected to the inner wall of one side of the T-shaped frame.

[0013] As a further description of the above technical solution: A slideway is opened on the inner wall of the top of the operation platform, and a positioning disk is fixedly connected to the bottom outer wall of the unit main body.

[0014] As a further description of the above technical solution: There are several annular grooves, and the several annular grooves are respectively opened on the inner wall of the top of the arc plate, and the inner diameter of the annular groove is adapted to the outer diameter of the arc-shaped tooth.

[0015] As a further description of the above technical solution: There are two tooth plates in total, the two tooth plates are symmetrically arranged respectively, and the two tooth plates are respectively meshed and connected to the spur gear.

[0016] The utility model has the following beneficial effects:

[0017] 1. In the utility model, by setting structures such as a sliding plate, an arc plate, and a support rod, the center point of circuit boards of different specifications is calibrated and clamped and fixed, which is convenient for existing numerical control to perform milling on the edge, milling holes and milling grooves. It improves the problem that the fixing devices for processing circuit boards of different specifications are relatively single and it is not easy to adjust the center regularly according to the size of the circuit board, resulting in unqualified dimensions when the milling cutter travels.

[0018] 2. In the utility model, by setting structures such as a T-shaped frame, an adjusting plate, and an arc-shaped block, the convenient separation and assembly of a single arc-shaped tooth are realized, which improves the problem that during long-term clamping and use, the surface of the arc-shaped tooth is prone to wear or rust and rotation failure, and professional tools are required for disassembly and assembly and fixation. At the same time, when a single arc-shaped tooth is damaged, the whole needs to be disassembled and replaced, increasing the maintenance cost. Description of the Drawings

[0019] Figure 1 It is a schematic front view of the overall positioning tooling for numerical control milling of a circuit board without PIN holes proposed by the utility model;

[0020] Figure 2 It is a schematic side view of the overall positioning tooling for numerical control milling of a circuit board without PIN holes proposed by the utility model;

[0021] Figure 3 It is a schematic diagram of the positioning mechanism of the positioning tooling for numerical control milling of a circuit board without PIN holes proposed by the utility model;

[0022] Figure 4 It is a schematic diagram of the auxiliary mechanism of the positioning tooling for numerical control milling of a circuit board without PIN holes proposed by the utility model.

[0023] Legend Explanation:

[0024] 1. Operating platform; 2. Slideway; 3. Unit main body; 4. Rotating rod; 5. Positioning disk; 6. Positioning mechanism; 61. Spur gear; 62. Tooth plate; 63. Sliding plate; 64. Arc plate; 65. Annular groove; 66. Support rod; 67. Arc-shaped tooth; 68. Mounting plate; 7. Auxiliary mechanism; 71. T-shaped groove; 72. T-shaped frame; 73. Adjusting plate; 74. Arc-shaped block; 75. Small spring. Detailed implementation mode

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the protection scope of the present invention.

[0026] Refer to Figures 1 - 3 , an embodiment provided by the present invention: a positioning tooling for numerically controlled milling of the edge of a circuit board without PIN holes, including an operation platform 1. A unit main body 3 is fixedly connected to the outer wall of the bottom of the operation platform 1. By setting the unit main body 3 to drive the rotating rod 4 to rotate clockwise and counterclockwise, the output end of the unit main body 3 is fixedly connected to the rotating rod 4 through a coupling. A positioning mechanism 6 is arranged on the operation platform 1. By setting the positioning mechanism 6, the circuit board is centered and clamped for positioning. An auxiliary mechanism 7 is arranged on the positioning mechanism 6. By setting the auxiliary mechanism 7, a single arc tooth 67 is disassembled and assembled. The positioning mechanism 6 includes a spur gear 61. The spur gear 61 is fixedly sleeved on the rotating rod 4. A rack 62 is meshed with the spur gear 61. By setting the rack 62, two arc plates 64 are respectively driven to approach and separate from each other. A sliding plate 63 is fixedly connected to the outer wall of the top of the rack 62. A arc plate 64 is fixedly connected to the outer wall of the side of the sliding plate 63 away from the rack 62. By setting the outer surface shape of the arc plate 64, circuit boards of different sizes are pushed towards the center point position of the operation platform 1. An annular groove 65 is opened on the outer wall of the top of the arc plate 64. A support rod 66 is fixedly connected to the inner wall of the top of the annular groove 65. An arc tooth 67 is movably sleeved on the support rod 66. An installation plate 68 is clamped on the outer wall of the top of the arc plate 64.

[0027] Refer to Figures 2 - 3, the spur gear 61 is rotatably connected to the bottom outer wall of the operation platform 1 through a bearing, the toothed plate 62 is slidably connected to the bottom outer wall of the operation platform 1, the sliding plate 63 is slidably connected to the inner walls on both sides of the slideway 2, there are two arc-shaped plates 64, and the two arc-shaped plates 64 are symmetrically arranged. The arc-shaped teeth 67 are rotatably connected to the bottom inner wall of the annular groove 65. By setting the arc-shaped teeth 67 to cooperate with the support rod 66, the contact extrusion strain is adjusted according to the outer surface of different circuit boards to fit the surface. A grinding pad is fixedly connected to one outer wall of the arc-shaped teeth 67. A slideway 2 is opened on the top inner wall of the operation platform 1. A positioning disk 5 is fixedly connected to the bottom outer wall of the unit main body 3. By setting the positioning disk 5, the existing numerical control machine tool can be position-aligned according to the center point of the positioning disk 5, so as to ensure the center point when the circuit board is clamped, which is convenient for later operations such as milling the edge, milling the hole and milling the groove. There are several annular grooves 65, and several annular grooves 65 are respectively opened on the top inner wall of the arc-shaped plate 64. The inner diameter of the annular groove 65 is adapted to the outer diameter of the arc-shaped teeth 67. There are two toothed plates 62, and the two toothed plates 62 are symmetrically arranged. The two toothed plates 62 are respectively meshed with the spur gear 61.

[0028] Refer to Figures 3 - 4 , the auxiliary mechanism 7 includes a T-shaped groove 71. The T-shaped groove 71 is opened on one outer wall of the arc-shaped plate 64. The inner walls on both sides of the T-shaped groove 71 are slidably connected with a T-shaped frame 72. The inner wall of one side of the T-shaped frame 72 is slidably connected with an adjusting plate 73. An arc-shaped block 74 is fixedly connected to one outer wall of the adjusting plate 73. By setting the arc-shaped block 74 to be clamped and fixed to and separated from the T-shaped groove 71, the mounting plate 68 can be separated from and assembled with the arc-shaped plate 64. A small spring 75 is fixedly connected to the outer wall of the adjusting plate 73 away from the arc-shaped block 74. By setting the small spring 75 to generate a continuous thrust on the adjusting plate 73, an indication mark is opened on one outer wall of the adjusting plate 73. By setting the indication mark to prompt the operation method, the arc-shaped block 74 penetrates through the outer wall of one side of the T-shaped frame 72, and the arc-shaped block 74 is clamped on the inner wall of one side of the T-shaped groove 71. The end of the small spring 75 away from the adjusting plate 73 is fixedly connected to the inner wall of one side of the T-shaped frame 72.

[0029] Working principle: By starting the main body 3 of the unit, the rotating rod 4 rotates. The rotation of the rotating rod 4 drives the rotation of the spur gear 61. The rotation of the spur gear 61 drives the movement of two toothed plates 62. The movement of the toothed plates 62 drives the movement of the sliding plate 63. The movement of the sliding plate 63 drives the movement of the arc plate 64, causing the two arc plates 64 to approach each other, clamping and approaching the circuit board placed on the operation platform 1 towards the center of the positioning disk 5. At the same time, according to the different outer surfaces of different circuit boards when contacting the arc teeth 67 on the arc plate 64, different angular changes occur to the arc teeth 67, maximizing the degree of fit between the arc teeth 67 and the outer surface of the circuit board, reducing the looseness and shaking that occur when the existing numerical control machine tool mills the edges and holes of the circuit board. At the same time, after long-term use, by pulling the adjusting plate 73 to squeeze the small spring 75, and at the same time, the movement of the adjusting plate 73 drives the movement of the arc block 74. The movement of the arc block 74 separates from the T-shaped groove 71. Subsequently, by pulling the mounting plate 68, the T-shaped frame 72 moves, causing the T-shaped frame 72 to disengage from the T-shaped groove 71, separating the mounting plate 68 from the arc plate 64. Subsequently, by lifting, the arc teeth 67 are separated from the support rod 66, maintaining the problem of wear and damage of a single arc tooth 67.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A positioning tooling for numerically controlled milling of the edge of a circuit board without PIN holes, comprising an operation platform (1), characterized in that: The bottom outer wall of the operation platform (1) is fixedly connected to the unit main body (3). The output end of the unit main body (3) is fixedly connected to a rotating rod (4) through a coupling. A positioning mechanism (6) is arranged on the operation platform (1) to center and clamp the circuit board for positioning. An auxiliary mechanism (7) is arranged on the positioning mechanism (6) to separate and assemble a single arc tooth (67). The positioning mechanism (6) includes a spur gear (61). The spur gear (61) is fixedly sleeved on the rotating rod (4). A toothed plate (62) is meshed with the spur gear (61). The top outer wall of the toothed plate (62) is fixedly connected to a sliding plate (63). The outer wall of the sliding plate (63) away from the toothed plate (62) is fixedly connected to a radian plate (64). A ring groove (65) is opened on the top outer wall of the radian plate (64). A support rod (66) is fixedly connected to the top inner wall of the ring groove (65). An arc tooth (67) is movably sleeved on the support rod (66). An installation plate (68) is clamped on the top outer wall of the radian plate (64).

2. The positioning tooling for numerically controlled milling of the edges of a PIN - hole - free circuit board according to claim 1, wherein: The auxiliary mechanism (7) includes a T-shaped groove (71). The T-shaped groove (71) is opened on the outer wall of one side of the radian plate (64). A T-shaped frame (72) is slidably connected to the inner walls of both sides of the T-shaped groove (71). An adjusting plate (73) is slidably connected to the inner wall of one side of the T-shaped frame (72). An arc-shaped block (74) is fixedly connected to the outer wall of one side of the adjusting plate (73). A small spring (75) is fixedly connected to the outer wall of the adjusting plate (73) away from the arc-shaped block (74).

3. The positioning tooling for numerically controlled milling of the edge of a PIN - hole - free circuit board according to claim 1, characterized in that: The spur gear (61) is rotatably connected to the bottom outer wall of the operation platform (1) through a bearing. The toothed plate (62) is slidably connected to the bottom outer wall of the operation platform (1).

4. A positioning tooling for numerically controlled milling of the edge of a circuit board without PIN holes according to claim 1, characterized in that: The sliding plate (63) is slidably connected to the inner walls of both sides of the slideway (2). There are two radian plates (64), and the two radian plates (64) are symmetrically arranged respectively.

5. The positioning tooling for numerically controlled milling of the edge of a PIN - free circuit board according to claim 1, wherein: The arc tooth (67) is rotatably connected to the bottom inner wall of the ring groove (65). A frosted pad is fixedly connected to the outer wall of one side of the arc tooth (67).

6. The positioning tooling for numerically controlled milling of the edge of a circuit board without PIN holes according to claim 2, characterized in that: An indicating mark is opened on the outer wall of one side of the adjusting plate (73). The arc-shaped block (74) penetrates through the outer wall of one side of the T-shaped frame (72), and the arc-shaped block (74) is clamped on the inner wall of one side of the T-shaped groove (71).

7. A positioning tooling for numerically controlled milling of the edge of a PIN - hole - free circuit board according to claim 2, characterized in that: One end of the small spring (75) away from the adjusting plate (73) is fixedly connected to the inner wall of one side of the T-shaped frame (72).

8. A positioning tooling for numerically controlled milling of the edge of a circuit board without PIN holes according to claim 1, characterized in that: A slideway (2) is opened on the top inner wall of the operation platform (1). A positioning disk (5) is fixedly connected to the bottom outer wall of the unit main body (3).

9. A positioning tooling for numerically controlled milling of the edge of a PIN - hole - free circuit board according to claim 1, characterized in that: There are several ring grooves (65), and several ring grooves (65) are respectively opened on the top inner wall of the radian plate (64). The inner diameter of the ring groove (65) is adapted to the outer diameter of the arc tooth (67).

10. A positioning tooling for numerically controlled milling of the edge of a PIN - hole - free circuit board according to claim 1, characterized in that: There are two toothed plates (62), and the two toothed plates (62) are symmetrically arranged respectively. The two toothed plates (62) are respectively meshed with the spur gear (61).

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