Tapping machine for threaded hole

Abstract

The invention discloses a tapping machine for a treaded hole and aims at providing a thread tapping tool with easiness in control, high efficiency, low working intensity, stable torque and controllable tapping depth. The tapping machine comprises a screw rod, a cantilever shaft sleeve, an electrically operated mechanism and a stroke control system, wherein the screw rod is vertically fixed at one side of a base worktable; the cantilever shaft sleeve is matched onto the screw rod; the electrically operated mechanism is vertically and fixedly connected onto the cantilever shaft sleeve; and an electric motor and a shaft end screw are connected into a whole by a fixed sleeve of the electrically operated mechanism. The tapping machine is characterized in that a spindle of the electric motor (12) is connected with a driving shaft (26); the driving shaft (26) is connected with a mandrel (21) through a bearing (23) matched with a shaft sleeve; a tapping chuck (3) provided with a thread tap (2) is connected with the mandrel (21); and the electric motor is electrically with an intermediate relay through a stroke switch (13) and a total switch (14) which are arranged on a cantilever, and electrically controls the tapping chuck (3) to rotate and tap in a semiautomatic manner.

Description

technical field [0001] The invention relates to a tapping tool in machining. Background technique [0002] Existing desktop tapping machine is generally used in the tapping of machined part thread, thread tap is installed on the tapping chuck of the tapping machine, and the feeding motion of screw tap is manually controlled to complete tapping. However, the feed of the tap is manually controlled. Due to the unstable torque, the tapping depth cannot be accurately controlled, resulting in unqualified, worn or defective taps. Before tapping, if the unqualified hole diameter is too small, it will increase the The difficulty of tapping is large, and the tap wears faster at the same time. On the contrary, if the hole is too large, it can be tapped easily, but the quality of the thread is poor, because the small diameter of the thread will become larger, and the bonding force of the screw and nut is insufficient. Easy to slip teeth. Frequent occurrences in the tapping process: 1)...

AI Technical Summary

Problems solved by technology

Manual tapping is easy to make the tap not perpendicular to the workpiece, and the scrap rate is high. When the product batch is large and there are many threaded holes in a single piece, the production efficiency is low; Stable, unstable torque can easily cause the tap to break, which also increases the risk of the tap being broken and causing the product to be scrapped

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