Carbide gun drill is a special tool for deep hole machining with internal cooling and external chip removal, which is welded by drill bit, drill pipe and drill handle. Precision machining effect can be obtained by using gun drill, and the machined hole has accurate position, high straightness and coaxiality, high surface smoothness and repeatability. It can conveniently process various forms of deep holes, and can also solve special forms of deep holes, such as cross holes, blind holes and flat-bottomed blind holes.

It is best to use a sharpening fixture to sharpen the gun drill. RMQ-A series grinding fixture produced by Shaanxi Jinshi Machinery Co., Ltd. is a special tool for sharpening gun drills. Compact structure, convenient and reasonable clamping, simple adjustment and time-saving processing (all angles can be sharpened by one clamping). When used together with the universal grinder of Jinshi Company, the machined drill edge has high strength and good precision. Grinding range: 5-40. RMQ- gun drill sharpener is mainly composed of 1 and bottom plate; 2. Bending plate; 3 spindle sleeve; 4. Spindle; 5, tool clamping parts, etc. The bottom plate of RMQ- gun drill grinding tool has guide keys and open grooves. Used to locate and install grinding tools on the tool grinder. The bending plate can rotate in the horizontal plane. The spindle sleeve can rotate in the vertical plane. The spindle rotates 360 degrees around its own axis together with the tool holder in the spindle sleeve. Therefore, RMQ-A can easily finish the grinding of the cutter faces of deep-hole drills and gun drills. Deep-hole drill and gun drill are put in from the back of the main shaft hole of the sharpener, and the cemented carbide bit extends out of the end face of the main shaft for about 30mm (based on the principle that the main shaft sleeve does not interfere with the grinding wheel when grinding the bit with the grinding wheel). The drill pipe is placed next to the cutter pad, and the star screw is rotated, and the clamping bolt is tightened to tighten the bit. At this point, the rake face of the main cutting edge of the tool should be in a horizontal state. Then, through the rotation of the grinding tool in several directions, the grinding of five cutter surfaces of the deep hole drill and the gun drill is completed. When grinding the tool, record the scale value of each angle for reference in the next grinding to improve the grinding efficiency.

Shaanxi Jinshi Machinery is a senior professional manufacturer of deep-hole drilling machines, gun drills and accessories for deep-hole processing. Professional design, manufacture and sales of deep-hole drilling machines, deep-hole processing tools (gun drills), deep-hole drilling systems, deep-hole processing auxiliary tools, deep-hole cutting oil and deep-hole external processing. The address is in Guanghua Industrial Park, Hongguang Road, Xi. Tel: 029-8468703184250816.