Electric drill with drill bit diameter being adjustable and using method thereof
A technology of drill bit diameter and electric drill, applied in drilling/drilling equipment, components of boring machine/drilling machine, repairing drills, etc., can solve the inconvenience of carrying multiple drill bits, troublesome replacement of drill bits, etc., to achieve easy processing and implementation, improve work Safety, the effect of reducing the difficulty of adjustment
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[0034] see figure 1 As shown, the present invention discloses an electric drill with an adjustable drill bit diameter, which is composed of a body assembly 4, a clutch sliding sleeve 3, a hydraulic adjustment assembly 2 and an expandable drill bit 1.
[0035] see figure 1 , 2 As shown, the body assembly 4 is provided with a power supply part, a motor part, and a deceleration part in the housing, and its internal structure is the same as that of existing similar products. The front end of the body assembly 4 housing is provided with an output shaft 11 and The fixed shaft sleeve 13 coaxial with the output shaft 11, the fixed shaft sleeve 13 and the housing are relatively fixed, the two can adopt an integrated structure, the body assembly 4 is provided with a switch 12, and the output shaft 11 can be controlled by the switch 12. reverse or stop.
[0036] See attached figure 2 , 3As shown, the hydraulic adjustment assembly 2 includes a hydraulic cylinder 8 and a deceleration...
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