1、Twist Drills with Parallel Shank with Carbide Tips for Drilling netal Spiralbohrer mit Zylinderschaft mit Schneidplatte aua Hartmetall fr Metall Twist drills accordin to this Standard are suitable for drilling steel with a tensile strengt from 750 to 1400 N/m$ (= 75 to 140 kp/m2) and cast eteel with
2、 a tensile strength of 700 N/m (= 70 kp/mm2?) and they are also used for cast iron, chilled cast iron, malleable iron, gun metal, bronze and brass. The Illustrations are diagrammatic only and are not intended to convey details of design. Only the specified dimensions are to be observed. 9 Dimensions
3、 in mm DIN 8037 Driving tenon according to DIN 1809 (from d - ?) Designation of a twist group of application K drill with parallel shank, diameter d - 8 um, and with IO: Twist drill 8 DIm 8037 - K IO carbide tips of 2 1 and 1 see page 2 Continued on page 2 Explanations on page 2 Alleinverkauf der No
4、rmbltter dur definitions Driving tenons for tools with parallel shank Main groups of chip removal and groups of application Por carbides, also marking OP carbide lathe tools Carbide tips for drills; point angle 1150 for heavy loading Tuist drills with parallel ehank withcarbide tips, for drilling pl
5、astic8 (thermosetting plastics) Twist drills with Morse taper shank with carbide tips, for drilling metal Explanationa Compared vith the previous isaue of December 1942X, DIN 8037 has been edited to bring it into line rith the atandarda dealing rith high speed ateel twist drls. The type letter eymbo
6、li A and B previously used have bean abandoned, since they did not convey snj genuine type features. This ha dio enabled the two Table. to be oonbined. Apart iron the preferred diametcri for d, the Tablo aiao contalni diameter ranges for twist drills with intermediate dianetara ta which the aame len
7、gths apply. The diameter toler- ances have been narrowed and sone overall dimensions have undergone minor modification. Newly included, in addition to the incorporation of tho group of application icoording to DIN 4990 in the designation, are the Sections dealing with material and finish and also the reference to other relevant standards. Finally, the Newton (A) has been introduced as the unit of force.
