CN111586978A - Method for machining CAF-resistant circuit board through CNC (computer numerical control) of numerical control drilling machine - Google Patents
Method for machining CAF-resistant circuit board through CNC (computer numerical control) of numerical control drilling machine Download PDFInfo
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- CN111586978A CN111586978A CN202010419756.5A CN202010419756A CN111586978A CN 111586978 A CN111586978 A CN 111586978A CN 202010419756 A CN202010419756 A CN 202010419756A CN 111586978 A CN111586978 A CN 111586978A
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- 238000005553 drilling Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000003754 machining Methods 0.000 title description 2
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 238000004088 simulation Methods 0.000 claims abstract description 15
- 230000009191 jumping Effects 0.000 claims abstract description 7
- 238000003672 processing method Methods 0.000 claims abstract description 5
- 230000002035 prolonged effect Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
- H05K3/0047—Drilling of holes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
- G06F30/392—Floor-planning or layout, e.g. partitioning or placement
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Abstract
The invention discloses a method for processing a CAF-resistant circuit board by CNC (computer numerical control) drilling machine, which comprises the following steps: s1, aiming at the deviation of the drilling holes of the dense holes, manufacturing test data and carrying out simulation operation; s2, setting the test drilling holes to be 0.3mm (11.811mil) and the distance to be 6.0mil-17.0 mil; s3, increasing an output parameter Cool spread to realize the function of jumping the drill; s4, changing a set value of the Cool spread to output different data to simulate and observe the change of the main shaft path of the dense hole on the numerical control drilling machine; s5, simulating and observing the change of the main shaft path of the dense hole on the numerical control drilling machine according to the S1 test data; s6, obtaining a rule: for dense holes of 0.3mm (11.811mil), when the Cool spread is set to a value greater than the sum of the hole size and the hole pitch, a jump is made. The processing method enlarges the distance from the hole to the hole, prolongs the positioning time of the drilling machine, ensures more accurate positioning, reduces the deviation of the drilling holes of the dense holes and the quality problems caused by the deviation, and ensures smooth production.
Description
Technical Field
The invention relates to the technical field of CAF circuit board processing, in particular to a processing method for CNC processing of a CAF-resistant circuit board by a numerical control drilling machine.
Background
In the PCB manufacturing industry, the printed circuit board circuit gradually develops towards superfine, and VIA holes are more and more dense, so that the problem of hole deviation of dense holes is caused, the normal production of drilling is always disturbed, a new dense hole drilling processing mode needs to be found, the production is smooth, and the quality meets the customer requirements.
In the prior art, when a numerical control drilling machine drills holes, the holes are drilled according to the shortest path, namely, the same cutter firstly drills the holes with the shortest distance from the starting point to the end. For the plate with dense holes, separate drilling is generally adopted, namely, the dense holes of the same cutter are artificially divided into two drilling files, and the drilling files are called twice during drilling to produce. For the plate with dense holes, the distance from the hole to the hole is too close, so that the positioning time of the numerical control drilling machine is insufficient when the hole is drilled, the positioning is inaccurate, and meanwhile, a drill point slips in the Z-axis direction, so that the hole deviation phenomenon is caused.
There are also the following problems: 1. the dense holes are manually divided into two drilling files, so that the randomness is relatively high, and the leakage is easy to generate; 2, the data are repeatedly called on the drilling machine, so that errors are easy to generate.
Disclosure of Invention
The invention aims to solve the defects in the prior art (for a plate with dense holes, the positioning time of a numerical control drilling machine is insufficient and inaccurate due to too close hole-to-hole distance, and a drilling needle slips in the Z-axis direction to cause hole deviation) and provides a processing method for processing a CAF-resistant circuit board by a CNC drilling machine.
In order to achieve the purpose, the invention adopts the following technical scheme:
a processing method for CNC processing of CAF-resistant circuit boards by a numerical control drilling machine is characterized by comprising the following steps: the method comprises the following steps:
s1, aiming at the deviation of the drilling holes of the dense holes, manufacturing test data and carrying out simulation operation;
s2, setting the test drilling holes to be 0.3mm (11.811mil) and the distance to be 6.0mil-17.0 mil;
s3, increasing an output parameter Cool spread to realize the function of jumping the drill;
s4, changing a set value of the Cool spread to output different data to simulate and observe the change of the main shaft path of the dense hole on the numerical control drilling machine;
s5, simulating and observing the change of the main shaft path of the dense hole on the numerical control drilling machine according to the S1 test data;
s6, obtaining a rule: for dense holes of 0.3mm (11.811mil), when the Cool spread is set to a value greater than the sum of the hole size and the hole pitch, a jump is made.
The invention has the advantages that:
1. the distance from the hole to the hole is increased, the positioning time of the drilling machine is prolonged, the positioning is more accurate, the deviation of the drilling holes of the dense holes is reduced, the quality problem caused by the deviation is solved, and the production is smooth.
2. The rule is obtained according to the method: for dense holes of 0.3mm (11.811mil), when the Cool spread is set to a value greater than the sum of the hole size and the hole pitch, a jump is made.
3. The adoption of the jump drill can increase the moving time of the main shaft after the cutter is lifted in a part of holes, compared with the original data, the actual drilling time can be increased, but compared with the product scrapping caused by the loss and the wrong data due to manual branch drilling, the adoption of the jump drill is a more feasible method, and more error factors are reduced, and the later method is a reliable solution.
Drawings
FIG. 1 shows production test (test) data for holes with a 0.3mm (11.811mil) hole diameter from 6.0mil to 17.0mil hole-to-hole;
FIG. 2 shows the variation of the spindle path on the NC drilling machine under the Cool spread parameters.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
A processing step of CNC processing of CAF-resistant circuit boards by a numerical control drilling machine comprises the following steps:
aiming at hole deviation of dense hole drilling, firstly, making test data to perform simulation operation, setting specific parameters as shown in the following figure 1, and setting the hole spacing (from hole edge to hole edge) of 0.3mm (11.811mil) holes to be data with the spacing of 6.0-17.0 mil;
the method is characterized in that the function of jumping the drill is realized by increasing an output parameter Cool read, the actual value of Cool read is unknown, different data are output by continuously changing the set value of Cool read, the change of the main shaft path of the intensive hole on the numerical control drill is simulated and observed, and the simulation process is as follows (the routing is drawn from the starting point in the following figure 2, namely the moving path of the main shaft on the numerical control drill);
from the results of the simulation output, it can be seen that in fig. 2, when Cool spread = 17.812ml, i.e., greater than 17.811(11.811+6), the moving path of the 6.0mil hole spacing changes, and the Cool spread setting is effective.
According to other test value rules, the following can be obtained: for dense holes of 0.3mm (11.811mil), when the Coolspread is set to a value greater than the sum of the hole size and the hole pitch, a jump is made.
The hole pitch for production requirements is typically 14 mils, and according to the parameters of the above figure test, when Cool spread =25.812ml, the hole pitch of 14 mils can be drilled to perform jump drilling.
However, the time for moving the main shaft after lifting the cutter of a part of holes is increased by executing the jump drilling, the actual drilling time is prolonged compared with the original data, and the product scrapping caused by the missing and wrong data due to manual branch drilling is avoided.
Example 2
A processing step of CNC processing of CAF-resistant circuit boards by a numerical control drilling machine comprises the following steps:
aiming at hole deviation of dense hole drilling, firstly, making test data to perform simulation operation, and setting specific parameters as data with the hole spacing (from hole edge to hole edge) of 0.4mm (12.11) holes being 7.0mil spacing;
the method comprises the steps that the function of jumping the drill is achieved by increasing an output parameter Cool read, the actual value of Cool read is unknown, different data are output by continuously changing the set value of Cool read, the change of a main shaft path of a dense hole on the numerical control drill is simulated and observed, and the simulation process is that the routing which is drawn from the starting point in the figure 2 is the moving path of the main shaft on the numerical control drill;
from the results of the simulation, it can be seen that when Cool spread = 20.812ml, i.e., greater than 19.11(12.11+7), the 7.0mil aperture spacing changes its travel path, and the Cool spread setting is effective.
According to other test value rules, the following can be obtained: for dense holes of 0.4mm, when the value set for Cool spread is greater than the sum of the hole size and the hole pitch, a jump drill is performed.
The hole pitch for production requirements is typically 14 mils, and according to the parameters of the above figure test, when Cool spread =25.912ml, the hole pitch of 14 mils can be drilled for jump drilling.
However, the time for moving the main shaft after lifting the cutter of a part of holes is increased by executing the drill tripping, the actual drilling time is prolonged compared with the original data, and compared with the loss caused by manual drill splitting and the product scrapping caused by wrong data, the method for using the drill tripping is a more feasible method and reduces more error factors.
Example 3
A processing step of CNC processing of CAF-resistant circuit boards by a numerical control drilling machine comprises the following steps:
aiming at hole deviation of drilling of dense holes, firstly, manufacturing test data to perform simulation operation, and setting specific parameters as data with the hole spacing (from hole edge to hole edge) of 0.5mm holes being 6.5mil spacing;
the method comprises the steps that the function of jumping the drill is achieved by increasing an output parameter Cool read, the actual value of Cool read is unknown, different data are output by continuously changing the set value of Cool read, the change of a main shaft path of a dense hole on the numerical control drill is simulated and observed, and the simulation process is that the routing which is drawn from the starting point in the figure 2 is the moving path of the main shaft on the numerical control drill;
from the results of the simulation, it can be seen that when Cool spread = 18.812ml, i.e., greater than 18.96.811(12.31+6.5), the 6.5mil aperture spacing changes its travel path, and the Cool spread setting is effective.
According to other test value rules, the following can be obtained: for dense holes of 0.3mm, when the value set for Cool spread is greater than the sum of the hole size and the hole pitch, a jump drill will be performed.
The hole pitch for production requirements is typically 14 mils, and according to the parameters of the above figure test, when Cool spread =26.112ml, the hole pitch of 14 mils can be drilled to perform jump drilling.
However, the time for moving the main shaft after lifting the cutter of a part of holes is increased by executing the drill tripping, the actual drilling time is prolonged compared with the original data, and compared with the loss caused by manual drill splitting and the product scrapping caused by wrong data, the method for using the drill tripping is a more feasible method and reduces more error factors.
Example 4
A processing step of CNC processing of CAF-resistant circuit boards by a numerical control drilling machine comprises the following steps:
aiming at hole deviation of drilling of dense holes, firstly, manufacturing test data to perform simulation operation, and setting specific parameters as data with the hole spacing (from hole edge to hole edge) of 0.6mm holes being 6.8mil spacing;
the method comprises the steps that the function of jumping the drill is achieved by increasing an output parameter Cool read, the actual value of Cool read is unknown, different data are output by continuously changing the set value of Cool read, the change of a main shaft path of a dense hole on the numerical control drill is simulated and observed, and the simulation process is that the routing which is drawn from the starting point in the figure 2 is the moving path of the main shaft on the numerical control drill;
combining the results of the simulation output, it can be seen that when Cool spread = 18.812ml, i.e., greater than 18.811(12.811+6), the moving path of the 6.8mil hole spacing changes, and Cool spread setting is effective.
According to other test value rules, the following can be obtained: for dense holes of 0.6mm, when the value set for Cool spread is greater than the sum of the hole size and the hole pitch, a jump drill is performed.
The hole pitch for production requirements is typically 14 mils, and according to the parameters of the above figure test, when Cool spread =26.812ml, the hole pitch of 14 mils can be drilled to perform jump drilling.
However, the time for moving the main shaft after lifting the cutter of a part of holes is increased by executing the drill tripping, the actual drilling time is prolonged compared with the original data, and compared with the loss caused by manual drill splitting and the product scrapping caused by wrong data, the method for using the drill tripping is a more feasible method and reduces more error factors.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (1)
1. A processing method for CNC processing of CAF-resistant circuit boards by a numerical control drilling machine is characterized by comprising the following steps: the method comprises the following steps:
s1, aiming at the deviation of the drilling holes of the dense holes, manufacturing test data and carrying out simulation operation;
s2, setting the test drilling holes to be 0.3mm (11.811mil) and the distance to be 6.0mil-17.0 mil;
s3, increasing an output parameter Cool spread to realize the function of jumping the drill;
s4, changing a set value of the Cool spread to output different data to simulate and observe the change of the main shaft path of the dense hole on the numerical control drilling machine;
s5, simulating and observing the change of the main shaft path of the dense hole on the numerical control drilling machine according to the S1 test data;
s6, obtaining a rule: for dense holes of 0.3mm (11.811mil), when the Cool spread is set to a value greater than the sum of the hole size and the hole pitch, a jump is made.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010419756.5A CN111586978A (en) | 2020-05-18 | 2020-05-18 | Method for machining CAF-resistant circuit board through CNC (computer numerical control) of numerical control drilling machine |
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| CN202010419756.5A CN111586978A (en) | 2020-05-18 | 2020-05-18 | Method for machining CAF-resistant circuit board through CNC (computer numerical control) of numerical control drilling machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112566372A (en) * | 2020-11-06 | 2021-03-26 | 龙南骏亚精密电路有限公司 | Method for controlling jump drilling distance by drilling output |
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- 2020-05-18 CN CN202010419756.5A patent/CN111586978A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112566372A (en) * | 2020-11-06 | 2021-03-26 | 龙南骏亚精密电路有限公司 | Method for controlling jump drilling distance by drilling output |
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