U DRILL
Specifications
① ② ③ ④
SP-15-3D-C25
① SP-type handle
② U drill diameter
③ Effective processing length
④ Shank diameter
Effective processing length=15x3=45mm
Note: The above data is in mm. There may be an error of 0.01-0.05mm.
Drilling into the drill:
Drilling is an important factor in successful drilling. One of the methods to ensure good hole quality is to ensure that the drilling surface of the workpiece is perpendicular to the central axis of the drill. In addition, indexable shallow hole drills can also be used to process convex, concave, inclined and irregular drilling surfaces by adjusting the feed.
General considerations:
① It is strongly recommended to use high-pressure center internal cooling cutting. Internal cooling cutting can maximize the cutting efficiency of the drill bit, effectively avoid the accumulation of chips, breakage of the blade and damage to the processed internal surface of the machine, ensuring processing reliability
② Use external cooling to drill, the drilling depth should not exceed 1.5D; when drilling depth must be used, it is recommended to use pecking
③ To achieve the best drilling effect:
⑴ Detection of rigidity of tool holder
⑵Minimize the deviation between the tool and the spindle axis
⑶ Use the recommended cutting method
④Minimum coolant pressure 4KG / c㎡ when drilling depth 2D / 3D, minimum coolant pressure 5KG / c㎡ or above when drilling depth 4D
⑤ Tolerance of machining hole diameter, usually drilling depth is 0 / 0.25 when 2D / 3D; 0 / 0.40 when 4D, but it will vary with different bed and processing conditions.
⑥ Avoid starting drilling on inclined surface, concave surface, uneven surface exceeding 6 °. This is very easy to make the drill bit off-center or cause the drill bit to collapse. If this is necessary, the drilling feed must be reduced to the recommended value 1/3.
⑦If there is already a pre-drilled hole on the part, the hole diameter of the hole must not exceed 1/4 of the size of the finished product, otherwise the drill will be deflected.
⑧ When drilling parts with intersecting holes and multi-layer stacked plates, the feed must be reduced to about 1/3 of the recommended value
Warning: When drilling through the workpiece, a disc-shaped waste material will fly out at a high speed at the bottom of the workpiece, and appropriate protection measures must be taken to ensure personal safety
Shipping:
Items will be shipped in 1-2 working days after receiving your payment,all items will be tested carefully before it is dispatched.
Tracking number will be provided after we send your item,you can track your item by the tracking number.
Shipping information will be showed after 2-3 days after the item is dispatched.
Delivery time depends on the customs policy of destination or other factors,so it may take longer sometimes.
Please contact us if you don't receive your item in Estimated Delivery Time,we will help you to check the parcel and ensure you receive the parcel as soon as possible,If the parcel is returned or lost ,we will resend one to you or refund your payment.
Note:
We are not responsible for any custom duty or import tax,we will mark the item low value,but it is most that you contact us to mark the value of your item before we dispatch it.
Return:
If you are not satisfied with the item, please return it within 30 days for a replacement or refund.
About our company：
We have the inserts,taps,alloy drills,alloy milling cutters ,HSS milling cutters,HSS drills and so on ,all brand CNC cutting tools sell at low price.There are still some models which not listed at our store,if you need more items,you can send messages to us.
Our store is entity company, in large stock, all goods sold are original ones, There are also more inventory that we have not listed out.
We are factory of Carbide milling cutter,alloy drill,turning tool holder.If you need (in large quantity )of these items,please contact us,we will offer you the lowest shipping cost .
More products are being updated, please pay attention to my store.
