Numerical control three-tip carpenter's drill tapping machine

Abstract

The invention discloses a CNC three-point woodworking drill-bit sharpening machine, which comprises a frame, a grinding wheel, a clamping device, a feeding device, a grinding wheel dressing device, a positioner, a stabilizer and a controller. The grinding wheel and the feeding device are arranged on the frame; the grinding wheel used for sharpening the drill bit is connected with a grinding-wheel driving motor; the clamping device is arranged on the feeding device and comprises a chuck, an indexing head and a clamping cylinder, the chuck for fixing the drill bit and the indexing head for controlling the angle of the drill bit are both connected with the clamping cylinder; the feeding device and a feeding motor are connected with each other and can be close to or far from the grinding wheel; the clamping device, the feeding device and the grinding wheel dressing device are all connected with the controller. The invention can sharpen various three-point woodworking drills, key-slot milling cutters, end mills and some chamfering devices of certain shapes, is of high process accuracy, efficiency, safety and easy operation.

Description

technical field [0001] The invention relates to a numerically controlled machine tool, in particular to a numerically controlled three-pointed woodworking drill for shedding processing of various three-pointed woodworking drills, keyway milling cutters, end mills and part-shaped chamfers, etc. machine. Background technique [0002] With the higher and higher requirements for machining precision, higher requirements are also put forward for various processing tools. At present, there are mainly three methods for woodworking drilling opening processing: the first is that the operator directly holds the drill bit 1 in his hand. Grinding on wheel 2 with manual feed, see figure 1 ; The second is to set the guide sleeve 3 at a fixed position in front of the grinding wheel 2, insert the drill bit 1 into the guide sleeve 3, and then use the manual feeding method, see figure 2 The third is to add indexing pin 4 and locking bolt 5 on the basis of the original guide sleeve, and set ...

AI Technical Summary

Problems solved by technology

[0002] With the higher and higher requirements for machining precision, higher requirements are also put forward for various processing tools. At present, there are mainly three methods for woodworking drilling opening processing: the first is that the operator directly holds the drill bit 1 in his hand. Grinding on wheel 2 with manual feed, see figure 1 ; The second is to set the guide sleeve 3 at a fixed position in front of the grinding wheel 2, insert the drill bit 1 into the guide sleeve 3, and then use the manual feeding method, see figure 2 The third is to add indexing pin 4 and locking bolt 5 on the basis of the original guide sleeve, and set the guide sleeve 3 on the movable cross carriage 6 for positioning. It is manual operation, the speed of feed and the length of contact time with the grinding wheel are not consistent, the error of grinding is very large, and the control of end tooth runout is >0.3mm

Moreover, in the existing processing methods, people operate on the front of the grinding wheel, and the phenomenon of sand particles collapsing into the eyes often occurs. If the feeding is too forceful, the grinding wheel will be broken, and safety accidents will also occur.

Therefore, the current methods of woodworking drilling opening processing all have the disadvantages of poor precision and poor safety.

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