A method for managing the life of a circuit board drill bit

Abstract

The application discloses a life management method of a circuit board drill bit, which comprises the following steps: on one hand, the drill bit is divided into four stages, and different stages of drill bits are used for drilling of a circuit soft board and a circuit hard board; on the other hand, the drill bit is ground and maintained according to the number of times of use, and the drill bits of the four stages are classified according to the number of times of grinding and maintenance; the drilling thickness of the drill bit of each stage is set according to the wear degree of the drill bit of each stage, so that the service life of the drill bit is further improved, and meanwhile, the drill bits of the four stages are respectively arranged on four drill machines, so that the problem of reduced production efficiency caused by replacement of the drill bit is avoided.

Description

Technical Field

[0001] This invention belongs to the field of drill bit management technology, and specifically relates to a method for managing the lifespan of a circuit board drill bit. Background Technology

[0002] With the development of electronic information technology, more and more industries are using modern electronic equipment to improve work efficiency and reduce labor intensity. As the physical carrier of electronic equipment, the circuit board is an indispensable part of electronic equipment. The quality of the circuit board is related to the function and performance of the product. The drilling process is a key process in the production of circuit boards. Its main function is to provide electrical connections and fix components through drilling. The drilling process uses a drill bit to drill holes in the circuit board. The drill bit is generally made of high hardness, high wear resistance and high strength materials and has a long service life.

[0003] Currently, there are few methods for managing the lifespan of circuit board drill bits. Most methods simply use the drill bits until they are scrapped, or color-code the drill bits to roughly determine their condition and lifespan. Without managing the lifespan of the drill bits, their lifespan is shortened. Furthermore, the lack of precise control over the lifespan of the drill bits can lead to uncontrollable failures of the drill bits, which can affect the production of circuit boards, impacting both the quality and production efficiency of the circuit boards. Summary of the Invention

[0004] The purpose of this invention is to provide a method for managing the lifespan of a circuit board drill bit.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention includes the following steps:

[0006] A method for managing the lifespan of a circuit board drill bit, comprising the following steps:

[0007] (1) When the circuit board is a rigid board, the second stage drill bit is used to drill the hole at the beginning of the drilling process, and then the first stage drill bit is used to drill the hole.

[0008] (2) When the circuit board is a flexible board, first use the fourth stage drill bit to drill holes, and then use the third stage drill bit to drill holes.

[0009] (3) After drilling is completed, the second stage of drill bit is used to modify the drill hole. After completion, the hole wall quality is tested and compared with the standard hole wall to determine whether the hole wall quality meets the requirements. At the same time, drill bits that meet the maintenance requirements are ground and maintained, and drill bits that meet the scrapping standards are scrapped.

[0010] Furthermore, in step (1), the drill bits in the first stage and the second stage are new drill bits and drill bits after maintenance.

[0011] Furthermore, the drill bits in the third and fourth stages mentioned in step (2) are the drill bits after two maintenance sessions and the drill bits after three maintenance sessions.

[0012] Furthermore, in step (1), the drilling thickness of the second stage drill bit is 10-15% of the thickness of the circuit board, and the drilling thickness of the first stage drill bit is 85-90% of the thickness of the circuit board.

[0013] Furthermore, in step (2), the drilling thickness of the fourth stage drill bit is 35-40% of the thickness of the circuit board, and the drilling thickness of the third stage drill bit is 60-65% of the thickness of the circuit board.

[0014] Furthermore, the maintenance requirements in step (3) are as follows: the drill bit in the first stage is to be ground and maintained after 4900 to 5100 uses; the drill bit in the second stage is to be ground and maintained after 2400 to 2600 uses; and the drill bit in the third stage is to be ground and maintained after 1100 to 1300 uses.

[0015] Furthermore, the scrapping standard mentioned in step (3) is: the effective cutting length of the drill bit is <10um.

[0016] Furthermore, the drill bits for the four stages are respectively installed on four drilling rigs, and the drill bits are selected according to the corresponding procedures when drilling.

[0017] The beneficial effects of this invention are as follows:

[0018] This invention extends the lifespan of circuit boards by using corresponding drill bits for different materials. Newer first-stage and second-stage drill bits are used for harder circuit boards, while older third-stage and fourth-stage drill bits are used for softer circuit boards. This newer bit for harder boards and older bit for softer boards extends the lifespan of the drill bits. Using the second-stage drill bit first improves the drilling efficiency of the first-stage drill bit and reduces its wear. Using the third-stage drill bit later avoids greater wear when the fourth-stage drill bit contacts the hard board, thus extending its lifespan. Furthermore, the lifespan of the drill bits is further extended by performing grinding and maintenance on them within a specified number of cycles. A drill bit scrapping standard is established to prevent problems such as decreased drilling quality and reduced production efficiency due to untimely drill bit scrapping. To avoid reduced drilling efficiency due to replacing different stage drill bits, all four stages of drill bits are mounted together on the drilling machine, extending the lifespan of the drill bits without reducing drilling efficiency. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the embodiments. Example 1

[0020] The first stage drill bit is ground and maintained after 5,000 uses; the second stage drill bit is ground and maintained after 2,500 uses; and the third stage drill bit is ground and maintained after 1,200 uses.

[0021] (1) When the circuit board is a rigid board, the second stage drill bit is used to drill the hole at the beginning of the drilling process, and then the first stage drill bit is used to drill the hole.

[0022] (2) When the circuit board is a flexible board, first use the fourth stage drill bit to drill holes, and then use the third stage drill bit to drill holes.

[0023] (3) After drilling is completed, the second stage of drill bit is used to modify the drill hole. After completion, the hole wall quality is tested and compared with the standard hole wall to determine whether the hole wall quality meets the requirements. At the same time, drill bits that meet the maintenance requirements are ground and maintained, and drill bits that meet the scrapping standards are scrapped. Example 2

[0024] The first stage drill bit is ground and maintained after 4900 uses; the second stage drill bit is ground and maintained after 2600 uses; and the third stage drill bit is ground and maintained after 1100 uses.

[0025] (1) When the circuit board is a rigid board, the second stage drill bit is used to drill the hole at the beginning of the drilling process, and then the first stage drill bit is used to drill the hole.

[0026] (2) When the circuit board is a flexible board, first use the fourth stage drill bit to drill holes, and then use the third stage drill bit to drill holes.

[0027] (3) After drilling is completed, the second stage of drill bit is used to modify the drill hole. After completion, the hole wall quality is tested and compared with the standard hole wall to determine whether the hole wall quality meets the requirements. At the same time, drill bits that meet the maintenance requirements are ground and maintained, and drill bits that meet the scrapping standards are scrapped. Example 3

[0028] The first stage drill bit is ground and maintained after 5100 uses; the second stage drill bit is ground and maintained after 2400 uses; and the third stage drill bit is ground and maintained after 1300 uses.

[0029] (1) When the circuit board is a rigid board, the second stage drill bit is used to drill the hole at the beginning of the drilling process, and then the first stage drill bit is used to drill the hole.

[0030] (2) When the circuit board is a flexible board, first use the fourth stage drill bit to drill holes, and then use the third stage drill bit to drill holes.

[0031] (3) After drilling is completed, the second stage of drill bit is used to modify the drill hole. After completion, the hole wall quality is tested and compared with the standard hole wall to determine whether the hole wall quality meets the requirements. At the same time, drill bits that meet the maintenance requirements are ground and maintained, and drill bits that meet the scrapping standards are scrapped. Example 4

[0032] The first stage drill bit is a new drill bit; the second stage drill bit is a drill bit that has been used 5000 times after the first stage drill bit; the third stage drill bit is a drill bit that has been used 2500 times after the second stage drill bit; and the fourth stage drill bit is a drill bit that has been used 1200 times after the third stage drill bit.

[0033] (1) When the circuit board is a rigid board, the second stage drill bit is used to drill the hole at the beginning of the drilling process, and then the first stage drill bit is used to drill the hole.

[0034] (2) When the circuit board is a flexible board, first use the fourth stage drill bit to drill holes, and then use the third stage drill bit to drill holes.

[0035] (3) After drilling is completed, the second stage of the drill bit is used to modify the drill hole. After the drilling is completed, the hole wall quality is tested and compared with the standard hole wall to determine whether the hole wall quality meets the requirements. At the same time, the drill bit that reaches the scrapping standard is scrapped.

[0036] The rest is the same as in Example 1. Example 5

[0037] The first stage drill bit is ground and maintained after 5,000 uses; the second stage drill bit is ground and maintained after 2,500 uses; and the third stage drill bit is ground and maintained after 1,200 uses.

[0038] Each stage of the drill bit drills a quarter of the thickness of the circuit board.

[0039] (1) At the beginning of the drilling process, the second stage drill bit is used for drilling, and then the first stage drill bit is used for drilling.

[0040] (2) Drill using the fourth stage drill bit, and then drill using the third stage drill bit;

[0041] (3) After drilling is completed, the second stage of drill bit is used to modify the drill hole. After completion, the hole wall quality is tested and compared with the standard hole wall to determine whether the hole wall quality meets the requirements. At the same time, drill bits that meet the maintenance requirements are ground and maintained, and drill bits that meet the scrapping standards are scrapped.

[0042] The rest is the same as in Example 1. Example 6

[0043] In this embodiment, the same drill bit is used to drill holes in the circuit board throughout the entire process until it is scrapped.

[0044] The rest is the same as in Example 1.

[0045] Record the number of times each drill bit was used from the start of use to its scrapping in each embodiment, and calculate its average value. At the same time, the yield of the finished circuit board of each embodiment is statistically analyzed. Specific data are shown in Table 1.

[0046] Table 1 Data Tables for Examples 1-6

[0047] Implementation Items Average service life of a single drill bit (times) Circuit board yield (%) Example 1 11085 99.2 Example 2 11049 98.8 Example 3 11058 99.0 Example 4 9416 90.4 Example 5 9869 97.8 Example 6 8724 96.5

[0048] As shown in Table 1, the drill bit lifespan and circuit board yield of Examples 1-3 are at the highest levels. In Example 4, because the drill bit was not ground and maintained, the wear layer on the surface of the drill bit and the micro-deformation of the cutting edge will increase with the number of drilling operations, which will affect the lifespan of the drill bit and the drilling quality, resulting in a lower circuit board yield. In Example 5, because the drilling was not performed according to the material of the circuit board, the wear of the drill bit will be more severe when drilling the hard circuit board in the third and fourth stages, which will affect the overall lifespan of the drill bit and the yield of the circuit board. In Example 6, because the same drill bit is used for drilling throughout the process, the wear rate of the drill bit is faster than that of other examples, so its lifespan is the shortest, which also affects the yield of the circuit board.

Claims

1. A method for managing the lifespan of a circuit board drill bit, characterized in that: The specific steps are as follows: (1) When the circuit board is a rigid board, the second stage drill bit is used to drill the hole at the beginning of the drilling process, and then the first stage drill bit is used to drill the hole. (2) When the circuit board is a flexible board, first use the fourth stage drill bit to drill holes, and then use the third stage drill bit to drill holes. (3) After drilling is completed, the second stage of drill bit is used to modify the drill hole. After the drilling is completed, the hole wall quality is tested and compared with the standard hole wall to determine whether the hole wall quality meets the requirements. At the same time, drill bits that meet the maintenance requirements are ground and maintained, and drill bits that meet the scrapping standards are scrapped. The drill bits in the first and second stages are new drill bits and drill bits after one maintenance, respectively, while the drill bits in the third and fourth stages are drill bits after two maintenances and drill bits after three maintenances, respectively.

2. The method for managing the lifespan of a circuit board drill bit as described in claim 1, characterized in that: The second stage drill bit drilling thickness is 10-15% of the thickness of the hard circuit board, the first stage drill bit drilling thickness is 85-90% of the thickness of the hard circuit board, the fourth stage drill bit drilling thickness is 35-40% of the thickness of the flexible circuit board, and the third stage drill bit drilling thickness is 60-65% of the thickness of the flexible circuit board.

3. The method for managing the lifespan of a circuit board drill bit as described in claim 1, characterized in that: The maintenance requirements are as follows: The first stage involves grinding and maintenance of the drill bit after 4900-5100 uses; the second stage involves grinding and maintenance after 2400-2600 uses; and the third stage involves grinding and maintenance after 1100-1300 uses.

4. The method for managing the lifespan of a circuit board drill bit as described in claim 1, characterized in that: The scrapping standard is: the effective cutting length of the drill bit is <10um.

5. The method for managing the lifespan of a circuit board drill bit as described in claim 1, characterized in that: The four drill bits are installed on four drilling rigs respectively. When drilling, the corresponding drill bit is selected according to the corresponding procedure.