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Substrate inspection before drilling:
A. Name, Number, Specifications, Dimensions, Copper and Platinum Thickness B, No Scratch C, No Bending, No Deformation D, No Oxidation or Oil Pollution E, Quantity F, No Concave and Convex, Layered Stripping and Wrinkle (2), Independent Inspection by Drilling Operators
1. drilling quality inspection items are available.
A, aperture B, batch front C, depth penetration D, whether or not there is a blasting hole E, check bias hole, hole deformation F, porous few hole G, burr H, whether there is plugging hole J, cutter leakage K, whole plate displacement
2. broken diamond Tsui
Reasons: (1) spindle deflection (2) improper operation of CNC drilling rig (3) inappropriate bit selection (4) inadequate bit rotational speed, feed rate is too high (5) too many laminates (6) between the board and the board or under the cover of debris (7) drilling the depth of the spindle caused bad drill chip removal hanging (4) 8) excessive or excessive life of the drill. (9) Scratch and wrinkle of cover plate, uneven bending of cushion plate (10) too wide adhesive tape when fixing base plate, or too small cover aluminum sheet, plate (11) cutting speed caused by extrusion (12), especially when the operation is not (13) cover aluminum sheet under serious plugging (14) the center of the welding bit tip and the center of the drill handle deviation
Resolvent:
(1) the main shaft should be overhauled or replaced by the main shaft. (2) A. Check if the pressure foot gas pipeline is blocked B. Adjust the pressure of the pressure foot according to the drilling condition. Check the pressure data when the pressure foot is pressed. The normal value is 7.5 kg. C, check the spindle speed variation and whether the copper wire in the nozzle affects the speed uniformity. D, drilling operation to detect spindle speed changes and spindle stability. E. Carefully adjust the state between the pressure foot and the bit. The tip of the bit is not allowed to expose the pressure foot. The drill point is allowed to be F at 3.0 mm inside the pressure foot, and the parallelism of the drilling table is checked.
3. Kong Sun
Reasons: (1) Take the bit after breaking the bit and cause (2) There is no aluminum sheet or clamp back plate when drilling. (3) Parameter error. (4) Bit elongation. (5) Effective length of the drill can not meet the need of drilling laminate thickness. (6) Hand drilling. (7) Plate special, batch front caused.
Resolvent:
(1) According to the previous problem 1, check the cause of knife breakage, make the correct treatment (2) Aluminum sheet and plate have a protective role in the hole ring, production must be used, can be used and can not be placed in a unified direction separately from the plate before checking. (3) before drilling, it is necessary to check whether the drilling depth is in line with each other, and whether the parameters of each drill bit are set correctly. (4) The drilling rig grabs the drill bit and checks whether the position of the drill bit clamp is correct to restart the drill. Generally, the drill bit can not exceed the pressure foot when the drill is started. (5) Visually measure the effective length of the drill bit before it is put on the machine, and the stack number of production boards can be used for measuring and checking. (6) manual drilling cutting accuracy and speed can not meet the requirements. (7) When setting parameters for drilling special plates, the proper parameters should be selected according to the quality, and the feed should not be too fast.
The 4. hole position is shifted and the alignment is wrong.
Reasons: (1) Bit deviation during drilling (2) inappropriate selection of cover material, soft and hard discomfort (3) substrate swelling and shrinkage resulting in hole deviation (4) improper use of matching positioning tools (5) improper setting of pressure foot when drilling, hit pins so that production board in the production of movement (6) bit operation process Resonance (7) Spring chuck unclean or damaged (8) production board, panel deviation hole or stack offset (9) drill in the operation of contact cover plate sliding (10) cover plate aluminum surface scratches or creases, in the guide drill drilling deviation. (11) no pin (12) origin different (13) glue paper not fastened (14) drilling machine X, Y axis movement deviation (15) program problems
Resolvent
(1) A. Check whether the spindle deflects B, reduce the number of laminates, usually according to the number of double-panel lamination is 6 times the diameter of the drill and the number of multi-layer lamination is 2-3 times the diameter of the drill. C. Increase the rotational speed of the drill bit or reduce the feed rate; D. Check whether the drill bit meets the technical requirements, otherwise re-grinding; E. Check whether the top of the drill bit and the handle of the drill bit have good concentricity; F. Check whether the fixed state between the drill bit and the spring chuck is tight; G. Check and correct the stability and stability of the drill table. Sex. (2) Choose high-density 0.50mm lime cover or replace composite cover material (upper and lower layers are 0.06mm thick aluminum foil, the middle is fiber core, the total thickness is 0.35mm). (3) According to the characteristics of the board, before drilling or after drilling, bake the board (usually 145 + 5, baking for 4 hours). (4) Check or detect the tool hole size accuracy and the position of the upper positioning pin is offset. (5) Check to reset the pressure foot height, the normal pressure foot height from the plate surface and 0.80 mm is the best pressure foot height for drilling (6) choose the appropriate bit speed. (7) clean or replace the spring chuck. (8) The panel is not loaded with pins, and the pins on the control panel are too low or loose. It is necessary to reposition and replace the pins. (9) Choose a suitable feed rate or a bit with better flexural strength. (10) Replacement of flat and non-creased aluminum sheet (11) Nailing operation as required (12) Recording and verifying the origin (13) Placing adhesive paper at 90 degrees right angle to the edge of the board; (14) Feedback notification machine repair, commissioning and maintenance drilling rig (15) Checking and verifying, notifying the project to make modifications.

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